Re: opera 10.61 consumes too much CPU

On Tue, 31 Aug 2010 11:05:33 +0200, Jacek Osiecki <[email protected]> wrote:

> Hi,
>
> I have been always using Opera with looots of opened tabs.
> However, recently it seemed to consume more CPU than usually it did...
>
> I tried to reduce number of tabs to the most needed - about 15 (my God,  
> now I can see the favicons, and even a part of title!!!! ;), but opera  
> still consumes 20-30% of CPU.
> None of those opened websites feature Flash, even no animated GIFs are  
> present, and all sites are quite small - no tons of large images or  
> something. My CPU is not a bleeding edge, but also not a piece of crap  
> stolen from museum: Pentium(R) Dual-Core  CPU E5200 @ 2.50GHz.
>
> I have checked what actually takes so much CPU - and launched the strace  
> for the PID of Opera. And it seems that opera constantly tries to get  
> some resources in order to check the time. Most probably it is caused by  
> some specific configuration of my kernel - however, it definitely should  
> not react like this.
>
> Here is the part of strace, which is constantly repeated (with various  
> numeber of clock_gettime between select-read sequence):
>
> clock_gettime(CLOCK_MONOTONIC, {618015, 817279354}) = 0
> clock_gettime(CLOCK_MONOTONIC, {618015, 817300132}) = 0
> clock_gettime(CLOCK_MONOTONIC, {618015, 817320764}) = 0
> clock_gettime(CLOCK_MONOTONIC, {618015, 817341422}) = 0
> clock_gettime(CLOCK_MONOTONIC, {618015, 817361865}) = 0
> clock_gettime(CLOCK_MONOTONIC, {618015, 817382223}) = 0
> clock_gettime(CLOCK_MONOTONIC, {618015, 817402735}) = 0
> clock_gettime(CLOCK_MONOTONIC, {618015, 817423118}) = 0
> clock_gettime(CLOCK_MONOTONIC, {618015, 817443611}) = 0
> clock_gettime(CLOCK_MONOTONIC, {618015, 817464009}) = 0
> select(78, [3 74 75 76 77], [], [3 74 75 76 77], {0, 0}) = 0 (Timeout)
> read(3, 0x8f42e10, 4096)                = -1 EAGAIN (Resource  
> temporarily unavailable)
>
> Any possibility to repair this? :)
>
> Best regards,

Watch for DSK-312640 in fixed issues in
http://my.opera.com/desktopteam/blog/ :)

Longer strace log may help us in locating calls, that create
this bottleneck for your configuration (from clean profile, please,
you can send it to my mail if it's going to be few MB).

What distribution/kernel version/special kernel configuration
do you use?

Pozdrawiam,
-- 
| ← Ceci n'est pas une pipe
Patryk Obara

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