Messages in this thread | | | Date | Thu, 22 Nov 2007 12:06:43 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: 2.6.24-rc3-mm1 (sync is slow ?) |
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On Wed, 21 Nov 2007 00:49:09 -0800 Andrew Morton <akpm@linux-foundation.org> wrote:
> On Wed, 21 Nov 2007 17:42:15 +0900 KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote: > > > Hi, Andrew > > > > I got following result in 'sync' command. > > It was too slow. (memory controller config is off ;) > > I attaches my .config. > > == > > [2.6.24-rc3-mm1] > > [kamezawa@dr-test2 ~]$ dd if=/dev/zero of=./tmpfile bs=4096 count=100000 > > 100000+0 records in > > 100000+0 records out > > 409600000 bytes (410 MB) copied, 1.46706 seconds, 279 MB/s > > [kamezawa@dr-test2 ~]$ time sync > > > > real 3m6.440s > > user 0m0.000s > > sys 0m0.133s
> Well I wonder how we did that. > > It seems OK here from a quick test (i386, ext3-on-IDE). > > Maybe device driver/block breakage? >
I confirmed This slowdown is caused by git-scsi-misc.patch. I'm sorry that I can't chase more and will be offline in this weekend.
This is scsi_mod information in /proc/modules = scsi_mod 409416 8 mptctl,sg,lpfc,scsi_transport_fc,mptspi,mptscsih,scsi_transport_spi,sd_mod, Live 0xa000000202818000 =
What information should I provide more ?
Thanks, -Kame
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