Firefox 45 hangs at browser start-up க்கான சமீபத்திய பதில்கள்https://support.mozilla.org/ta/questions/11137122016-04-04T04:48:13-07:00Do the renaming whilst Firefox is closed.
You may see only a places.sqlite
Rename any other place2016-04-04T04:48:13-07:00John99https://support.mozilla.org/ta/questions/1113712?page=2#answer-863007<p>Do the renaming whilst Firefox is closed.
You may see only a <em>places.sqlite</em>
</p><p>Rename any other <em>places.sqlite</em> files, but do not delete other &lt;name&gt;.sqlite files because they are for other important databases.
</p><p>I am not even sure if a <em>places.sqlite-journal</em> is used now, but as you know temporary <em>place.sqlite.wal</em> &amp; <em>.shm</em> are created, and I believe it may still produce <em>places.sqlite-corrupt</em>.
</p>
<hr>
<p>Update
Latest post is
</p>
<ul><li> <em>Instant slowdown after updating to Firefox v. 45.0.2</em> <a href="/questions/1118000" rel="nofollow">/questions/1118000</a>
</li></ul>John99 said
places.sqlite Problems
You can easily rule these in, or out; by cloning your current p2016-04-04T01:22:57-07:00FireFoxFan1https://support.mozilla.org/ta/questions/1113712?page=2#answer-862933<p><em>John99 <a href="#answer-862910" rel="nofollow">said</a></em>
</p>
<blockquote><strong><em>places.sqlite </em> Problems</strong>
You can easily rule these in, or out; by cloning your current profile then using Firefox with that profile but with all the places files removed (or renamed) first.
Alternatively you could do that with your current profile, it is slightly more risky. It would be good practice to backup the profile and the bookmarks first.
Have you already seen
<ul><li> <a href="/en-US/kb/firefox-hangs-or-not-responding" rel="nofollow">Firefox hangs or is not responding - How to fix</a>
<ul><li> Note places.sqlite issue are a well known cause of random hangs as mentioned in <sub><a href="/en-US/kb/firefox-hangs-or-not-responding#w_firefox-hangs-at-random-times" rel="nofollow">Firefox hangs or is not responding - How to fix</a></sub><strong>_firefox-hangs-at-random-times</strong>
</li></ul>
</li></ul>
Are you also relying on Firefox to restore open tabs, that is another complicating factor, as is forcing Firefox to close after a hang.
</blockquote>
<p>Quick question about creating a new "places" database. I read through the instructions about renaming files, but when I go to my "show folder" I only see places.sqlite and not places.squlite-journal. Will that present a problem, or do I simply need to rename places.sqlite?
</p>Others may not have exactly the same problems as you.
The bigger easier problems affecting the most 2016-04-04T00:32:29-07:00John99https://support.mozilla.org/ta/questions/1113712?page=2#answer-862910<p>Others may not have exactly the same problems as you.
The bigger easier problems affecting the most users tend to get noticed prioritised and fixed first.
</p><p>Be aware that problems with the place.sqlite may in fact be part of the problem that causes issues whilst browsing.
</p><p>By all means start another new thread about that as a specific problem, but then lets try and troubleshoot the issue logically.
If you install DE and try to reproduce the problem with that you have a new additional profile, a new install and an additional version of Firefox with more fixes in it.
If you do not wish to go down the DE route then let's at least try in a new profile with no plugins in use and no extensions.
</p><p>If you do start a new question thread mention that and we will cross link it and try not to repeat the same questions and advice unnecessarily.
</p><p>Yes I know that is not realistic and not how you will want to use Firefox, but the big question needing answering is do you get those problems in that configuration&nbsp;?
If you do:
Then it is likely some Firefox bug needing looking at and fixing.
If you do not:
Then it is likely one or more of your customisations or addons and to make progress you will need to show what customisation is causing the problem.
</p><p><strong><em>places.sqlite </em> Problems</strong>
You can easily rule these in, or out; by cloning your current profile then using Firefox with that profile but with all the places files removed (or renamed) first.
Alternatively you could do that with your current profile, it is slightly more risky. It would be good practice to backup the profile and the bookmarks first.
</p><p>Have you already seen
</p>
<ul><li> <a href="/en-US/kb/firefox-hangs-or-not-responding" rel="nofollow">Firefox hangs or is not responding - How to fix</a>
<ul><li> Note places.sqlite issue are a well known cause of random hangs as mentioned in <sub><a href="/en-US/kb/firefox-hangs-or-not-responding#w_firefox-hangs-at-random-times" rel="nofollow">Firefox hangs or is not responding - How to fix</a></sub><strong>_firefox-hangs-at-random-times</strong>
</li></ul>
</li></ul>
<p>Are you also relying on Firefox to restore open tabs, that is another complicating factor, as is forcing Firefox to close after a hang.
</p>John99 said
Short hangs at some startups may be an acceptable price to pay, if the alternative is t2016-04-03T23:12:52-07:00FireFoxFan1https://support.mozilla.org/ta/questions/1113712?page=2#answer-862884<p><em>John99 <a href="#answer-862873" rel="nofollow">said</a></em>
</p>
<blockquote>Short hangs at some startups may be an acceptable price to pay, if the alternative is the browser crashes and/or fails to clear History. A developer reported recently a fast machine with a ssd could take several several minutes or fail to clear History.
Obviously there should not be problems with clearing History in Firefox, or with shutdown or startup hangs. However we know in recent Firefox versions there have been issues and some of those issues are being solved in stages.
The default is to remember History.
Your best course of action, and probably until you are on at least Fx 47 (early June) may be as follows
<ol><li> Leave Firefox set to clear history on closedown - As that is clearly what you prefer
</li><li> Try to remember prior to each close down to manually clear History <br> I am hoping Firefox will be more successful if it is able to do a lot of the work outside the shutdown process.
<ul><li> <a href="/en-US/kb/delete-browsing-search-download-history-firefox#w_how-do-i-clear-my-history" rel="nofollow">Delete browsing, search and download history on Firefox</a>_how-do-i-clear-my-history <br> Perhaps even clear history repeatedly within a browsing session, if you are not using the History, and can afford to have Firefox potentially hang or freeze.
</li></ul>
</li><li> On shutown give Firefox as long as possible so it has a chance to shutdown cleanly, or generate a crash report, before you shutdown the computer.
</li><li>If you do get crash reports generated, let us have the Crash IDs (they begin <em><strong>bp-</strong></em> )
<ul><li><a href="/en-US/kb/mozillacrashreporter" rel="nofollow">Mozilla Crash Reporter</a>
</li></ul>
</li></ol>
<strong>Alternatively</strong> leave Firefox on the default of not clearing history and do not clear it at all, including manually, and problems relating to hangs due to places.sqlite should cease.
<hr>
<p>Forum Note , another fix now in Fx47
<em>Bug 1250363 - Speedup history removals by simulating a per-statement trigger</em>
Old bugs still not fully resolved include
Bug 871908 - Clearing "browsing and download" history does excessive disc IO (due to huge wal file)
+ tracker Bug 691507
Remaining shutdown issues
<strong>Bug 1248837</strong> - shutdownhang in nsThread::Shutdown() | Firefox crashes, sometimes the restart fails
</p>
</blockquote>
<p>Okay, this more detailed explanation has helped me understand what the problem probably is.
</p><p>However, I would like to reiterate contrary to my title on this question - I wish I hadn't concentrated on the start-up time at the beginning - that while the hang at start-up originally concerned me, my greatest annoyance is with the small and consistent hangs DURING a long session on Firefox. I could deal with the slow start-up so long as the little bugs later in the session didn't happen.
</p><p>Anyway, I'll try and turn off clearing history at shutdown and see if that corrects anything. A problem I see with that is that I never make it through a full session of Firefox before it permnanetly hangs and I have to close out in a way Firefox doesn't prefer, in which case there is no way to know when you'd need to clear history before the end of the session.
</p><p>I guess I'll just wait to see how Firefox corrects this in future versions. I'm pushing this so hard because I think a lot of users are having this problem, but have just come to accept it to a point where they think it's a regular part of a brower, and it's not.
</p><p>Again, thanks for the detailed explanation.
</p>The clearing History on closedown is a double edged sword when it comes to places.sqlite issues.
On 2016-04-03T22:27:49-07:00John99https://support.mozilla.org/ta/questions/1113712?page=2#answer-862873<p>The clearing History on closedown is a double edged sword when it comes to <em>places.sqlite</em> issues.
</p><p>On the one hand a user clearing history on closedown is likely to have a smaller places.sqlite as the database contains only the single session history. This means clearing History will be faster and less likely to cause hangs or problems.
</p><p>On the other hand available time is limited at closedown and if problems occur they may then cause issues at a subsequent startup or fail to complete. So keeping the database smaller with less history by clearing automatically may cause less problems if you do inevitably decide to clear the history. Short hangs at some startups may be an acceptable price to pay, if the alternative is the browser crashes and/or fails to clear History. A developer reported recently a fast machine with a ssd could take several several minutes or fail to clear History.
</p><p>Just as an aside
Telemetry collects metrics on the startup times but by default telemetry is turned off on Releases, if more user turned it on developers would be more likely to be aware of the issue. I will not directly help you but turning on telemetry may help developers, and as I already mentioned FHR will give you solid data about startup times.
</p>
<ul><li> <a href="/en-US/kb/share-data-mozilla-help-improve-firefox" rel="nofollow">Share data with Mozilla to help improve Firefox</a>
</li><li> FHR: <a href="/en-US/kb/firefox-health-report-understand-your-browser-perf" rel="nofollow">Firefox Health Report - understand your browser performance</a>
</li></ul>
<p>Obviously there should not be problems with clearing History in Firefox, or with shutdown or startup hangs. However we know in recent Firefox versions there have been issues and some of those issues are being solved in stages.
</p>
<blockquote>Thanks. So, do you think my hangs would be corrected simply by switching my "history" privacy settings? What is the default in this regard? </blockquote>
<p>The default is to remember History.
</p><p>Your best course of action, and probably until you are on at least Fx 47 (early June) may be as follows
</p>
<ol><li> Leave Firefox set to clear history on closedown - As that is clearly what you prefer
</li><li> Try to remember prior to each close down to manually clear History <br> I am hoping Firefox will be more successful if it is able to do a lot of the work outside the shutdown process.
<ul><li> <a href="/en-US/kb/delete-browsing-search-download-history-firefox#w_how-do-i-clear-my-history" rel="nofollow">Delete browsing, search and download history on Firefox</a>_how-do-i-clear-my-history <br> Perhaps even clear history repeatedly within a browsing session, if you are not using the History, and can afford to have Firefox potentially hang or freeze.
</li></ul>
</li><li> On shutown give Firefox as long as possible so it has a chance to shutdown cleanly, or generate a crash report, before you shutdown the computer.
</li><li>If you do get crash reports generated, let us have the Crash IDs (they begin <em><strong>bp-</strong></em> )
<ul><li><a href="/en-US/kb/mozillacrashreporter" rel="nofollow">Mozilla Crash Reporter</a>
</li></ul>
</li></ol>
<p><strong>Alternatively</strong> leave Firefox on the default of not clearing history and do not clear it at all, including manually, and problems relating to hangs due to places.sqlite should cease.
</p>
<hr>
<p>Forum Note , another fix now in Fx47
<em>Bug 1250363 - Speedup history removals by simulating a per-statement trigger</em>
Old bugs still not fully resolved include
Bug 871908 - Clearing "browsing and download" history does excessive disc IO (due to huge wal file)
+ tracker Bug 691507
Remaining shutdown issues
<strong>Bug 1248837</strong> - shutdownhang in nsThread::Shutdown() | Firefox crashes, sometimes the restart fails
</p>"Use custom settings for history" allows to access the current history and cookie settings for inspe2016-04-03T21:44:46-07:00cor-elhttps://support.mozilla.org/ta/questions/1113712?page=2#answer-862863<p>"Use custom settings for history" allows to access the current history and cookie settings for inspection and modification.
Selecting "Use custom settings for history" doesn't make any changes to history and cookie settings.
Firefox will keep showing "Use custom settings for history" as an indication that at least one of the history and cookie settings is not the default to make you aware that changes were made.
</p><p>This is more likely related to the "Clear history when Firefox closes" settings with regards to clearing the history or cookies.
</p>John99 said
I understand you have set Firefox to clear history when you closedown. Bookmarks and H2016-04-03T13:00:52-07:00FireFoxFan1https://support.mozilla.org/ta/questions/1113712?page=2#answer-862731<p><em>John99 <a href="#answer-862320" rel="nofollow">said</a></em>
</p>
<blockquote>
I understand you have set Firefox to clear history when you closedown. Bookmarks and History are stored in the database file places.sqlite .
Firefox will need to process that database file at closedown, to remove the History data.
If something goes wrong in the shutdown or subsequent startup the .shm &amp; .wal files may sometimes get left behind. Helpdesk considers some of your problems may be related to outstanding <em>bug 1248837</em> issues.
If you do have issues affecting places.sqlite that plausibly could be part of your reason for seeing other intermittent hangs.
I am not certain exactly what the places maintenance addon does. My recollection is it basically forces the standard cleanup operations of places.sqlite to be performed.
</blockquote>
<p>Thanks. So, do you think my hangs would be corrected simply by switching my "history" privacy settings? What is the default in this regard? Currently, you have three options at the "Firefox will" section which include: Remember history, never remember history and use custom settings for history, which is what mine is currently set at. I'd expirmented with one of these yesterday (forgot which one, honestly, I think it was Remember history), but that didn't seem to fix anything.
</p>I understand you have set Firefox to clear history when you closedown. Bookmarks and History are sto2016-04-01T21:29:52-07:00John99https://support.mozilla.org/ta/questions/1113712?page=2#answer-862320<p>I understand you have set Firefox to clear history when you closedown. Bookmarks and History are stored in the database file places.sqlite .
Firefox will need to process that database file at closedown, to remove the History data.
</p><p>If something goes wrong in the shutdown or subsequent startup the .shm &amp; .wal files may sometimes get left behind. Helpdesk considers some of your problems may be related to outstanding <em>bug 1248837</em> issues.
</p><p>If you do have issues affecting places.sqlite that plausibly could be part of your reason for seeing other intermittent hangs.
</p><p>I am not certain exactly what the places maintenance addon does. My recollection is it basically forces the standard cleanup operations of places.sqlite to be performed.
</p>cor-el said
The places.sqlite-shm and places.sqlite-wal files are SQLite temp files.
wal: Write-A2016-04-01T18:27:34-07:00FireFoxFan1https://support.mozilla.org/ta/questions/1113712?page=2#answer-862300<p><em>cor-el <a href="#answer-862233" rel="nofollow">said</a></em>
</p>
<blockquote>
The places.sqlite-shm and places.sqlite-wal files are SQLite temp files.
wal: Write-Ahead Logging
shm: Shared Memory files
<ul><li><a href="http://www.sqlite.org/wal.html" rel="nofollow">http://www.sqlite.org/wal.html</a>
</li></ul>
</blockquote>
<p>I was more interested in the answer to my question concerning why these files are showing up now when they weren't when you originally asked me what place files were in my folder?
</p>The places.sqlite-shm and places.sqlite-wal files are SQLite temp files.
wal: Write-Ahead Logging
sh2016-04-01T10:09:57-07:00cor-elhttps://support.mozilla.org/ta/questions/1113712?page=2#answer-862233<p>The places.sqlite-shm and places.sqlite-wal files are SQLite temp files.
</p><pre>wal: Write-Ahead Logging
shm: Shared Memory files
</pre>
<ul><li><a href="http://www.sqlite.org/wal.html" rel="nofollow">http://www.sqlite.org/wal.html</a>
</li></ul>Another question, what should the extension Places Maintenance do? I've noticed the more I've playe2016-04-01T00:15:35-07:00FireFoxFan1https://support.mozilla.org/ta/questions/1113712?page=2#answer-862101<p>Another question, what should the extension Places Maintenance do? I've noticed the more I've played around with it that it doesn't seem to help at all.
</p><p>BTW, I've also tried with disabling QuickJava and Classic Theme Restorer. While that made things seem faster for the first hour of my session, after that I've gotten the same intermittent hangs/slowness. So, I guess I can confirm it's not those extensions. I'd worked in safemode, but only for a short time, so this kind of confirms it wasn't the extensions since I worked through a long session.
</p><p>BTW, can you explain the places wal and such? Why those would be showing up, now?
</p>FireFoxFan1 said
... I was using Private Browsing for a few weeks before I figured out it was the 2016-03-24T01:16:58-07:00John99https://support.mozilla.org/ta/questions/1113712#answer-859617<p><em>FireFoxFan1 <a href="#answer-859583" rel="nofollow">said</a></em>
</p>
<blockquote>
... I was using Private Browsing for a few weeks before I figured out it was the central problem of certain things not loading in my browser (embedded twitter posts) which was unnacceptable to my browsing habits.</blockquote>
<p>You can now open <strong>PB</strong> Windows so you can browse with some tabs saving history and some not saving History
</p>
<blockquote>I don't think I'm going to mess with Developer Edition. That's way above my internet literacy level. </blockquote>
<p>No its not. If you can use Firefox, DE is no problem.
You may wish to turn off its multi thread option.
</p>
<ul><li> Even that is now a menu option like <strong>PB</strong> is on Release. You can use both options at once in different windows .
</li></ul>
<p>Otherwise it is near identical to Firefox Releases but with cosmetic changes and
</p>
<ul><li> New features, mostly twelve weeks before Firefox Release gets them
</li><li> Extra tools or options for turning on tools
</li></ul>
<blockquote>
... get hangs that require me to closedown my browser manually in a way that's not good for it; my biggest problem are the intermittent hangs a bit earlier in the session that last for two, three or four seconds at a time.
</blockquote>
<p>That should not happen I do not see such problems.
</p>
<blockquote>
.... I do expect from Firefox if I'm on too long for it to eventually freeze up from one big terminal hang, <br>
.... annoying smaller hangs while trying to navigate the internet. ...
</blockquote>
<p>No it should not freeze if left on. I can browse for hours or leave it on over 24 hours without problems
</p><p>Try DE with its new profile, with plugins disabled and confirm it works fine without any of those problems you have just listed.
</p><p>Some combination of things has broken your Firefox. Its a darn site quicker troubleshooting by starting with a blank slate and adding things until something breaks than it is randomly removing bits and pieces hoping to get lucky.
</p><p>One of the breakages may well be a regression in Firefox code. Even if that is the case it is a bug that only affects a small subset of Firefox users for some reason. Possibly only with certain settings, other software, hardware dependent; or a combination of such things.
</p><p>Yes we can make educated guesses, and take shortcuts with removing things. That's the logic of the temporary safe mode or temporary new profile suggestions.
</p>I might try option B and see if that helps, though I've always loved the option of Firefox clearing 2016-03-23T22:40:53-07:00FireFoxFan1https://support.mozilla.org/ta/questions/1113712#answer-859583<p>I might try option B and see if that helps, though I've always loved the option of Firefox clearing information like history on closedown as it's very convenient. I was using Private Browsing for a few weeks before I figured out it was the central problem of certain things not loading in my browser (embedded twitter posts) which was unnacceptable to my browsing habits.
</p><p>I don't think I'm going to mess with Developer Edition. That's way above my internet literacy level.
</p><p>BTW, I do want to make sure I explain my problem correctly, because it sounds from your description of it, I may not have been clear. While very late into hour-long sessions I sometimes do get hangs that require me to closedown my browser manually in a way that's not good for it; my biggest problem are the intermittent hangs a bit earlier in the session that last for two, three or four seconds at a time. Those are the most annoying. I do expect from Firefox if I'm on too long for it to eventually freeze up from one big terminal hang, but what I'm finding really discombobulating are the annoying smaller hangs while trying to navigate the internet. Those hangs make me have to choose between closedown and starting a new session or trying to solider on to get what I have to do get done before closing down and starting a new session.
</p>Hi again FireFoxFan1,
In one respect that is good news, it helps us understand part of what is a pro2016-03-23T19:56:44-07:00John99https://support.mozilla.org/ta/questions/1113712#answer-859551<p>Hi again FireFoxFan1,
In one respect that is good news, it helps us understand part of what is a problem on your Firefox.
</p><p>It is not so much what you do with the files as the fact that their existence helps explain aspects of your problem confirming it as being related to these startup &amp; closedown hangs that are under investigation.
Firefox may clear the mess up itself on the next successful closedown and restart. After all you do not always see these files in the profile.
</p><p>I do know Helpdesk staff did at least look at this thread and discussed it with engineers. Helpdesk then classified this as being related to one of the bugs I have already<a href="https://support.mozilla.org/en-US/questions/1113712#answer-856916" rel="nofollow">*</a> mentioned.
</p>
<ul><li><sup> (#c4)</sup> Bug 1248837 - shutdownhang in nsThread::Shutdown() | Firefox crashes, sometimes the restart fails
</li></ul>
<p><strong>Release &amp; Testing</strong>
I do not know if you realise this but in ordinary circumstances most Firefox changes are tested and rolled out in stages, that includes bugfixes. There is bit of a balancing act there. A lot of Releases actually have faults not discovered properly until they hit the millions of users that are using the standard Firefox Release. Some fixes my then need to be pushed out straight into the Release. That is sometimes referred to as a Chemspill fix. So for instance the standard Fx45 (8th March) was followed by fixes in Fx45.0.1 (16th March)
</p>
<ul><li> <a href="https://www.mozilla.org/en-US/firefox/45.0.1/releasenotes/" rel="nofollow">https://www.mozilla.org/en-US/firefox/45.0.1/releasenotes/</a>
</li><li> Releases also <a href="http://windows.microsoft.com/windows/security-essentials-download" rel="nofollow">see</a> &amp; graphic <img src="https://wiki.mozilla.org/images/d/d7/Rapid-release-5001.jpg">
</li></ul>
<p>The juggling decision is whether to play safe and put out fixes as part of the ordinary testing and Release cycle or whether to rush them out sooner to help more people quickly but risk snowball effects with untested fixes causing further problems.
</p><p><strong>What can you do</strong>
[A]
A lot of the fixes to related bugs are already in Fx46 &amp; Fx47. You could consider yourself <strong>trying a Pre-Release</strong> build of Firefox. Developer Edition (DE) is currently Fx47 and is now easy to install. By default it installs as an additional browser with its own profile.
</p>
<ul><li> <a href="https://developer.mozilla.org/Firefox/Developer_Edition" rel="nofollow">https://developer.mozilla.org/Firefox/Developer_Edition</a>
</li></ul>
<p>[B]
Trial <strong>not clearing history on close down</strong>.
That is involved in some of the issues as the closedown sanitise happens. If for instance you manually clear history before close down it may avoid some issues. Or better still benefit from the saved History and instead use Private Browsing Windows for banking or whatever when you have a need to not save History.
It may be worth ensuring Firefox is always given 10 minutes to closedown before the computer is shutdown, longer if Firefox activity is still seen to continue after the closedown starts. Make sure Firefox has a chance to close down properly, or time out and generate Crash reports.
</p>
<hr>
<p>Please say whether you try either of those and whether it makes any noticeable difference.
</p><p>If you try DE I would recommend trying it with its own profile, and not complicating matters by trying to share a profile with your working Release. You could add bookmarks I suggest by backing up your working Release profile bookmarks and restoring those into DE You could even create an additional DE profile and have one with a full set of bookmarks and one without. Is it only the one with the bookmarks that has hangs&nbsp;?
We may if you wish even be able to get a developer to test out a copy of your personal places.sqlite Developers have sometimes done that where they think it helps with bug investigation.
</p>John99 said
Also while Firefox is running (Please try both the working; and a brand new profile tha2016-03-23T16:48:52-07:00FireFoxFan1https://support.mozilla.org/ta/questions/1113712#answer-859517<p><em>John99 <a href="#answer-856916" rel="nofollow">said</a></em>
</p>
<blockquote>Also while Firefox is running (Please try both the working; and a brand new profile that you have not changed settings on, other than to disable plugins.) have a look in the Firefox profile. (Normally only work on profiles whilst Firefox is closed.) Look at the files listed. Make sure you have Windows displaying file extensions. You will see in each profile a <em>places.slite</em> do either profile also contain any places.sqlite.<strong>shm</strong> , places.sqlite.<strong>wal</strong> or places.sqlite.<strong>corrupt</strong> .
<ul><li>What do you find&nbsp;?
</li></ul>
</blockquote>
<p>NOW, I am seeing places.sqlite.<strong>shm</strong> , places.sqlite.<strong>wal</strong> in my profile folder. I just went and checked back as I'm still experiencing the intermittent hanging, and found these two places files. What should I do with them?
</p>Not solutions mainly things you may like to play with.
Tabs
Just a handful. That's clearly not part2016-03-17T22:09:37-07:00John99https://support.mozilla.org/ta/questions/1113712#answer-857406<p>Not solutions mainly things you may like to play with.
</p><p>Tabs
Just a handful. That's clearly not part of the problem. I know some users regularly have hundreds of tabs open. Years ago on a low spec machine I tested with over 300 tabs and Firefox slowed down but did not crash.
</p><p>Heavy startup hang
May be worth still looking at your profilewith Firefox running at closedown and startup just to see if there are files .wal , .shm , .corrupt
</p><p>Malware / anti malware
Did you try the Windows Safemode&nbsp;?
If you do not have malware, could it be the opposite issue, antimalware, &amp; security programs fighting with each other and Firefox.
</p><p>Closeout
<strong>Why not give Developer Edition (DE) a whirl.</strong> It is pretty stable. (Enough so for me to have it as the default browser on most machines) It has an optional &amp; experimental feature that allows single tabs to crash and be restarted without closing any other browser tabs or windows. Unfortunately not yet fully ready, e.g. issues with many addons and with touchscreen etc, use.
DE by default installs as a separate additional browser with its own profile. So it does not interfere with your working Firefox. It may be Synced with the ordinary Firefox if that is convenient.
</p>
<ul><li> Some user friendly, but unnecessary, interactive background <a href="https://www.mozilla.org/firefox/47.0a2/whatsnew/" rel="nofollow">https://www.mozilla.org/firefox/47.0a2/whatsnew/</a>
</li><li> Downloads <a href="https://www.mozilla.org/firefox/channel/#developer" rel="nofollow">https://www.mozilla.org/firefox/channel/#developer</a>
</li></ul>
<p><strong>Like to see how fast Firefox is at any given time&nbsp;?</strong>
The DE profiler, now called a performance tool is in Firefox Releases. So Fx44/45 have it. Intended to show how a site performs, not the browser. However it will graph whether the browser is achieving 60 frames per second or not. Enable you to take a snapshot over a few seconds, and then delve into the details at millisecond resolution. Your random hangs every five seconds or so should be easily seen on that.
</p>
<ul><li> <a href="https://developer.mozilla.org/docs/Tools/Performance/Frame_rate#Frame_rate_graph" rel="nofollow">Frame Rate Graph</a>
</li><li> Info including Video tutorial (Screenhots &amp; features may not match Fx45 exactly) <a href="https://developer.mozilla.org/docs/Tools/Performance" rel="nofollow">https://developer.mozilla.org/docs/Tools/Performance</a>
</li></ul>Lots of additional question, I see.
- Yes, the start of my first Firefox session after starting up m2016-03-17T14:35:12-07:00FireFoxFan1https://support.mozilla.org/ta/questions/1113712#answer-857320<p>Lots of additional question, I see.
</p><p>- Yes, the start of my first Firefox session after starting up my computer still has a heavy hang. All additional start-ups of the browser, however, are usually pretty bearable.
</p><p>- I've been told before that my memory usage isn't unusual. I'd thought that maybe it was the problem, but folks told me it was typical. My system settings 4 GB (3.43 usable) installed.
</p><p>- As to how many tabs I have open? Well, usually fewer than a handful but almost always under 10 at the maximum. I also try and avoid very graphic-heavy sites, so it's not like I'm having multiple pages open which includes lots of video players and such.
</p><p>- Already done clean reinstalls, and malware scans (from a whole host of downloaded programs) are run religiously on my machine.
</p><p>Guess I'll wait to see if help desk has anything for me. I've already had to close out of one session, tonight, because of a hang and freeze during a fairly routine session (i.e. just reading my local newspaper with four or five different articles in different tabs).
</p>The
"use custom settings for history."
I have this setting so that it clears my history when firef2016-03-17T01:27:29-07:00John99https://support.mozilla.org/ta/questions/1113712#answer-857007<p>The
</p><pre>"use custom settings for history."
I have this setting so that it clears my history when firefox closes.
</pre>
<p>Was exactly the sort of setting that was causing startup and closedown hangs in recent Firerfox versions.
</p><p>But most of those issues have been resolved by now. In some cases this problem included issues with places.sqlite &amp; in the most serious cases .shm .wal &amp; .corrupt files would be created. You probably would also have experienced crashes or lockups not just 7.5 second delays in startup.
So I guess your answers now rule that out, although your OP did say
</p><pre> When I start the browser up, my whole screen hangs
and freezes for a good 25 seconds. ....
I couldn't even get into my task manager
and the cursor was unmoveable.
</pre>
<ul><li> So you no longer experience that&nbsp;?
</li></ul>
<p>Your startup times do not seem particularly unusual.
</p>
<ul><li> Or are you saying this is a change and improvement when in a new profile etc&nbsp;?
</li></ul>
<hr>
<p>What's the <strong>System</strong> Like memory usage &amp; CPU for instance
Firefox on Windows is still normally a 32 bit application. If Windows 7 is having to use a page file Firefox will probably slow to a crawl. If Firefox is having issues with memory allocation and deallocation that could give cyclical hangs.
</p>
<ul><li>How does memory usage &amp; pagefile usage look in Windows Task Manager&nbsp;? (There are better methods but that's quick and simple)
<ul><li> Whats the total RAM on your computer&nbsp;?
</li><li> Usually what sort of number of Tabs do you have open: e.g. under 5, 10-20, 100-200 over 200
</li></ul>
</li><li>What about CPU if one or more cores are plateauing above 75% you may well see slowdowns.
</li><li>In fact looking at your system details (top right edge) I guess you are using a 32bit computer. Is that correct&nbsp;?
</li></ul>
<p>Your system may struggle trying to run two Firefox instances.
</p>
<hr>
<p>Before we try to consider unnecessarily complicated matters have you recently tried three very basic checks. I know you don't like the canned responses.
</p>
<ol><li> A clean Reinstall of Firefox. That involves deleting the program Files. Not the Profile files. It clears out any corruption there.
</li><li> Running in <strong>Windows safemode</strong>. That's usually started by pressing the F8 key say twice a second while booting up. It rules out some Windows issues.
</li><li>Malware scans with all the tools mentioned in <a href="/en-US/kb/troubleshoot-firefox-issues-caused-malware" rel="nofollow">Troubleshoot Firefox issues caused by malware</a>. Adware is blatantly obvious, but some malware is much more stealthy
</li></ol>
<p>If <strong>HelpDesk staff</strong> do manage to step in next week, and may consider helping you record the hang details they will almost certainly expect you to have tried those basic checks first.
</p>That is quite a bit of information you're asking me. I'll see what I can answer.
places.slite is th2016-03-16T23:24:52-07:00FireFoxFan1https://support.mozilla.org/ta/questions/1113712#answer-856955<p>That is quite a bit of information you're asking me. I'll see what I can answer.
</p><p>places.slite is the only file I have. As to my quote, I was talking about my privacy settings which I have set as "use custom settings for history." I have this setting so that it clears my history when firefox closes.
</p><p>As for the startup, that's less of a concern for me now than the hang ups and freezes later in my firefox sessions. The initial startups are still averaging it looks around 7.5 seconds. Subsequent startups are fairly quick.
</p><p>Hopefully, this helps get closer to the root of this.
</p>Canned response save time, but we try to use only where appropriate. In My Private Message replying2016-03-16T21:38:18-07:00John99https://support.mozilla.org/ta/questions/1113712#answer-856916<p>Canned response save time, but we try to use only where appropriate. In My Private Message replying to Your Private message I was quoting specific Firefox bugs that seemed likely to be relevant. I was trying to rule that in or out by asking for further information in this thread and for testing with a new profile.
</p><p>Those bugs <sup>(871908, 1248489, 1248837)</sup> are not likely to be relevant <strong>if</strong> the Video link fix, <strong>or</strong> the new profile did not help. You say a new profile helped so maybe they are relevant.
</p><p>Starting in safemode is useful troubleshooting step because we know what it changes and if it results in a cure a we can narrow it down. Same with the new Profile. It is not intended to be a fix but a troubleshooting step.
</p><p>Note if you want to see your Firefox startup times and so compare whether there is an improvement use the Firefox Health Report (FHR)
</p>
<ul><li> <a href="/en-US/kb/firefox-health-report-understand-your-browser-perf" rel="nofollow">Firefox Health Report - understand your browser performance</a>
</li></ul>
<p>I am still not clear about what you are setting Firefox to clear at closedown, and that is highly relevant to the bug that could be affecting you.
</p><p>Also while Firefox is running (Please try both the working; and a brand new profile that you have not changed settings on, other than to disable plugins.) have a look in the Firefox profile. (Normally only work on profiles whilst Firefox is closed.) Look at the files listed. Make sure you have Windows displaying file extensions. You will see in each profile a <em>places.slite</em> do either profile also contain any places.sqlite.<strong>shm</strong> , places.sqlite.<strong>wal</strong> or places.sqlite.<strong>corrupt</strong> .
</p>
<ul><li>What do you find&nbsp;?
</li></ul>
<p>There are also advanced methods of looking at hangs, and recording details but it is normally much faster and easier to just use trouble shooting steps alone.
</p><p>I am not sure I fully understand
</p>
<blockquote> What I end up having to do is close out of a session (and since I have everything deleted after I do, losing my log-ins and such, something I'm not interested in changing).</blockquote>
<p>In that comment are you referring to the fact that you normally work by keeping large numbers of Tabs Open and logged and startup that way
What do you mean by
</p><pre>I have everything deleted after I do
</pre>
<ul><li> Are you referring just to what happens when you test in a new profile&nbsp;?
</li></ul>
<p>Or are you talking about your actions; or Firefox's actions; in deleting something&nbsp;?
</p><p>Note also the main question you asked here was about hangs at startup. How is that affected by using the new profile, with plugins disabled but all other settings unchanged does that hang at startup?
</p>
<ul><li>Is FHR picking up these hangs or timings&nbsp;?
</li><li>Roughly how long does it normally take to startup&nbsp;?
</li><li> and what sort of time are you expecting&nbsp;?
</li></ul>
<p>By the way it is possible to run two instance of Firefox at the same time but with different profiles. That would allow you to directly compare how your working profile compares with a new profile. (Assuming your machine has sufficient resources: spare Processing power and RAM to not slow down or hang the two processes even further). It would probably also make working with and troubleshooting Firefox more convenient
</p>