Messages in this thread | | | Date | Tue, 30 Mar 2010 12:46:34 +0200 | Subject | Re: Poor interactive performance with I/O loads with fsync()ing | From | Pawel S <> |
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2010/3/23 Jens Axboe <jens.axboe@oracle.com>:
> It's also been my sneaking suspicion that swap is involved. I had lots > of RAM in anything I use, even the laptop and workstation. I'll try and > run some tests with lower memory and force it into swap, I've seen nasty > hangs that way.
I am not sure if the memory swapping is the case. According to KDE System monitor swap is not even touched when copying files. I also noticed similar responsiveness problems when extracting some rar files - twelve parts , each about 100MB and the system becomes unresponsive for some time since the first seconds of operation, then it behaves normally and then problem is back. I have 2GB of RAM. I am using ext4 file system and I am using noatime mount option.
P.S. It seems it is a little better when I have AHCI mode set in BIOS (at least when extracting archives).
P.S.2 I would be glad to provide some useful data. I created perf chart, but if this is not enough just instruct me what should I do next, please.
Regards
Pawel
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