On Wed, 21 Nov 2007 17:42:15 +0900 KAMEZAWA Hiroyuki <[email protected]> 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
>
>
> on, 2.6.23-rc2-mm1, 2.6.23-rc3 there was no problem.
> ==
> [2.6.24-rc3]
> [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, 2.07717 seconds, 197 MB/s
> [kamezawa@dr-test2 ~]$ time sync
>
> real 0m9.935s
> user 0m0.001s
> sys 0m0.113s
>
> [2.6.24-rc3]
> [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, 1.37147 seconds, 299 MB/s
> [kamezawa@dr-test2 ~]$ time sync[2.6.24-rc2-mm1]
>
>
> real 0m11.718s
> user 0m0.000s
> sys 0m0.138s
Well I wonder how we did that.
It seems OK here from a quick test (i386, ext3-on-IDE).
Maybe device driver/block breakage?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
