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Re: Reducing HDD writing affect on whole system.



Am Montag, 17. Oktober 2011 schrieb Sthu Deus:
> Thank You for Your time and answer, Camaleón:
> >> For system that I'm speaking now is a Dell's laptop w/ AMD
> >> Tutorion64 2.4 GHz, 2G RAM, w/ Hitachi SATA 750G in it.
> >
> >If memory serves me right, Turion64 sounds like an "old" CPU, right?
> >
> >("old" for today CPU's rhythms of life means a mactufacturing date of
> >2005/2006)
> 
> Yes, it is old - that is relating to its date of manufacturing, and
> not its value. :)
> 
> >Yes, there are many reports on that error:
> >
> >http://www.google.com/webhp?complete=0&hl=en#q=debian+MP-BIOS+bug:+825
> >4+timer+not+connected+to+IO-APIC&hl=en&tbo=1&complete=0&prmd=imvns&tba
> >s=0&source=lnt&sa=X&ei=2RKbTrePHMfAswbhocmUBA&ved=0CAkQpwUoAA&bav=on.2
> >,or.r_gc.r_pw.,cf.osb&fp=bd638b897581bb57&biw=1280&bih=888
> 
> Uhh. Why chromium does not open the link? :/
> 
> >But the relation between this message and the hard disk slowdown is
> >unclear :-?
> 
> I do not say that, just saw that - as we are talking on performance, I
> thought may that timer bug has any affect on  HDD too. :\
> 
> >> If interested I can upload some where whole dmesg output. Or some
> >> grep-ed info related to HDD performance problem.
> >
> >Yes please, the more accurate information you provide, the more
> >changes for a kernel hacker who reads your message can help you :-)
> 
> OK. Here it is.
> 
> http://pastebin.com/QYHxZmHd

Ok, before doing anything else try to repair your Ext4 filesystem:

[  154.732424] composite sync not supported
[  299.358408] composite sync not supported
[  304.096062] EXT4-fs (sda2): error count: 15
[  304.096073] EXT4-fs (sda2): initial error at 1313766195: 
ext4_mb_generate_buddy:736
[  304.096083] EXT4-fs (sda2): last error at 1315801717: 
ext4_reserve_inode_write:5619
[  387.290671] composite sync not supported

These errors may have an relation to slow performance. Are there any other 
Ext4 related errors?

You might want to copy everything what goes to another disk or create a 
disk dump and trial run the fsck from there. Are there any input/output 
errors in kern.log / syslog?

Is sda2 the partition you are doing the copy on?

Ciao,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7


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