Re: More Slowdown

[jp <jp.guillemin@free.fr>]

Hi,

For me reiser4 is working perfectly on Vanilla 2.6.14.2, all the testers 
who I sent the new kernel to are reporting excellent performance and 
reliability.

Could you explain a bit further the way I could reproduce this ?

Thanks

JP

Craig Shelley wrote:

>On Sat, 2005-11-12 at 09:06 +0000, John Gilmore wrote:
>  
>
>>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.
>>
>>    
>>
>
>Hi,
>
>I am sorry to say that I am having the same slowdown issue with Reiser4
>and kernel 2.6.14.2. It seems that my problem is not related to the I/O
>scheduler algorithm as I have tried both cfq and anticipatory.
>
>The I/O activity seems to come in long bursts lasting up to 15 seconds,
>and is unpredictable. The system almost grinds to a halt while the burst
>of I/O is taking place, which can be quite annoying while typing.
>There are no warnings in dmesg/syslog and the filesystem is clean.
>
>Sometimes the burst of I/O activity occurs in a different form, with
>short bursts every second, lasting about 10 seconds. Approx 30% duty
>cycle. When a burst occurs in this form, it tends not to lock processes
>as much.
>
>The general sound of the drive when a burst is in progress is that of
>heavy head movement, as if the drive is repeatedly seeking between two
>or three locations.
>
>Also, a thing which I noticed a while back, and may not be related in
>any way to Reiser4.. When I re-size the columns in Evolution Mail, I get
>continuous hard disk activity during the re-size. This hard disk
>activity stops either when I release the mouse or hold it still with the
>button down. Just wondering if anyone else gets the same thing.
>
>Regards,
>  
>