Re: Slowdown is gone & apt-get works with updated reiser4. So nevermind...

[Laurent Riffard <laurent.riffard@free.fr>]

Le 13.11.2005 13:18, Laurent Riffard a écrit :
> Le 13.11.2005 01:55, Artur Makówka a écrit :
> 
>>Hans Reiser wrote:
>>
>>
>>>John Gilmore wrote:
>>>
> 
> [snip]
> 
>>>> 
>>>>Oh, BTW. "The slowdown" as I called it is still there. I guess I
>>>>spoke to soon. The specific symptom is that the effected process
>>>>locks for a time, usually just a second or two, but sometimes a
>>>>minute or two and and at least once for many many minutes. I think
>>>>that the crash (soft lockup) that I reported earlier is related as
>>>>well. And it sounds like the comment that rvalles had about lockups
>>>>with mmaped files, except that it doesn't lock up permanently. Just
>>>>for a second or three usually.
>>>>
>>>> 
>>>>
>>>
>>>zam, please comment.
>>>
>>
>>one more thing im pretty sure of - the 2.6.13mm3 without any reiser4
>>additional patches (just clean 2.6.13mm3 as it has reiser4 already
>>built) is working fine.
>>
>>i mean, im not sure if this bug still exists here, but im 100% sure i
>>can write vim files easy without any downtime, so this is big difference.
>>
>>so for everyone with this bug - try clean 2.6.13mm3 from kernel.org. It
>>worked for me. i will wait with this kernel for a patch to stable line.
>>
>>Also - i will test it a little more tomorrow to be sure that this
>>version is bug free.
>>
> 
> 
> Hello,
> 
> It seems that fsync could be really slow when there is a lot of
> activity on the FS.
> 
> I've done the following test :
> - on a reiser4 FS, unpack a fresh kernel tarball and start a compilation
> - open a new terminal, wait 1 minute and start editing a file on the
> same FS with vi.
> - hit ":w" and wait...
> 
> $ strace -T vi foo 2>strace_vi.log
> $ grep fsync strace_vi.log
> fsync(3)                                = 0 <30.923808>
> $
> 
> My computer is a desktop with an Athlon XP 1600 and 512 Mb RAM.
> Write cache is disabled on the disk (hdparm -W0 /dev/hda).
> 

I forgot to mention: kernel version is 2.6.14-mm2.
-- 
laurent