Ubuntu – High CPU by Firefox

cpufirefox

For some days, Firefox has been consuming high CPU percentage while simply loading pages. It drops down otherwise. It often crosses 100% and even goes beyond upto 150% sometimes(!).

I ran Firefox in Safe Mode and observed the CPU, it is the same behaviour. I guess therefore that its none of add-ons causing it.

Refreshed Firefox through Menu, Troubleshooting Information. It gave no result.

I changed the Cache Disk Capacity value to 16384 as explained here but it is still the same. The default Integer Value has returned to 358400 while I check again.

How to remedy this?

Thanks for your reply.

Ubuntu: 12.04 (precise) 32-bit

Firefox 38

Best Answer

  1. You can make calls synchronous by starting firefox with firefox --sync. This means firefox processes have to wait for others to finish.

  2. there are plugins that reduce the amount of stuff firefox has to load, e.g. adblock plus, flashblock and disconnect. If you're willing to deal with the inconvenience you can even use no-script (stops scripts from running except from whitelisted domains). No-script is a hassle but it can really reduce the load on your system.

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