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txykumat
Tux's lil' helper
Joined: 24 Nov 2014
Posts: 104
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 Posted: Fri Aug 25, 2017 7:44 pm Post subject: Firefox using 20% of CPU |
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| After I switched my kernel from 3.9.34-gentoo to 3.14.5-gentoo, firefox is using 20 to 25 % of CPU whereas before it was only using 6%. ( when I am watching youtube video with 1080) I didn't change anything. Is simply copied .config from 3.9.34 dir to 3.14.5 dir and did make && make modules_install, mkconfig -o and selected the new kernel. I verified uname -a that I am running 3.14.5. What in the world is going on here? |
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mike155
Veteran
Joined: 17 Sep 2010
Posts: 1734
Location: Frankfurt, Germany
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| Posted: Fri Aug 25, 2017 7:51 pm Post subject: |
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| You can't just copy .config to a different kernel version. You should at least run "make oldconfig" and answer all questions. After that you should run "make menuconfig" and make sure that everything is OK. |
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txykumat
Tux's lil' helper
Joined: 24 Nov 2014
Posts: 104
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| Posted: Fri Aug 25, 2017 8:24 pm Post subject: |
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| Yah but why the increase in CPU usage |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 44218
Location: 56N 3W
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| Posted: Fri Aug 25, 2017 8:34 pm Post subject: |
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txykumat,
You have an illegal kernel .config. Anything can happen,
It gives you all sorts of strange behaviour that is very difficult to diagnose.
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Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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txykumat
Tux's lil' helper
Joined: 24 Nov 2014
Posts: 104
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| Posted: Fri Aug 25, 2017 9:33 pm Post subject: |
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| ok i'll oldconfig and go through menuconfig |
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Jaglover
Watchman
Joined: 29 May 2005
Posts: 7328
Location: Saint Amant, Acadiana
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txykumat
Tux's lil' helper
Joined: 24 Nov 2014
Posts: 104
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| Posted: Sat Aug 26, 2017 7:52 pm Post subject: |
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| Oh no, I meant 4.9.34 and 4.12.5-gentoo kernel. I recompiled kernel though the result is the same. I wonder what changed... |
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mir3x
Guru
Joined: 02 Jun 2012
Posts: 432
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| Posted: Mon Aug 28, 2017 12:13 pm Post subject: |
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Check numer of cores u see, i remeber on my core2duo 4.10 kernel reported 4 cores  and cpu was over 60% on idle, so i ditched it ( I switched to ryzen a bit later so no idea what happened there)
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Installation aborted to prevent system self-destruction |
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dmpogo
Advocate
Joined: 02 Sep 2004
Posts: 2542
Location: Canada
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| Posted: Mon Aug 28, 2017 10:38 pm Post subject: |
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| mir3x wrote: | | Check numer of cores u see, i remeber on my core2duo 4.10 kernel reported 4 cores : |
Which is correct if CPU supports hyperthreading |
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txykumat
Tux's lil' helper
Joined: 24 Nov 2014
Posts: 104
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| Posted: Tue Aug 29, 2017 4:37 pm Post subject: |
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How do I check what my MAKEOP supposed to be? I thought it was
But won't work. My CPU is Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz and
| Code: | | $ cat /proc/cpuinfo |
shows CPU 0, 1, 2, 3.
For now I am back to older kernel so my laptop won't hiss just watching youtube videos. |
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