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very high CPU% when downloading files

  • 2 cavab
  • 4 have this problem
  • 13 views
  • Last reply by FredMcD

shape5
shape5
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i checked activity monitor on osx lion 10.7.5 (using the latest firefox, tried the nightlies) and the CPU% goes from about 30% to 110% when downloading files (when they complete, the CPU goes back down again). it seems not to matter what types of files they are, just the fact that they are downloading. i don't see why or how this should happen, as all browsers i have used before recently switching to FF have never had this behavior.

i checked activity monitor on osx lion 10.7.5 (using the latest firefox, tried the nightlies) and the CPU% goes from about 30% to 110% when downloading files (when they complete, the CPU goes back down again). it seems not to matter what types of files they are, just the fact that they are downloading. i don't see why or how this should happen, as all browsers i have used before recently switching to FF have never had this behavior.

All Replies (2)

Tora bisu
Tora bisu
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Use the add on 'Down them all"and let it get more than 3 connections to speed up the process, While using Less RAM.

FredMcD
FredMcD
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Firefox uses too many CPU resources - How to fix At times, Firefox may require significant CPU resources to display content. We'll show you options for fixing this if this if it is happening too often.

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix?esab=a&s=high+CPU&r=0&as=s