Messages in this thread | | | Date | Tue, 20 May 2008 10:14:19 +0800 | From | "Dave Young" <> | Subject | Re: [2.6.26-rc2-mm1] sync to speed up? |
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On Tue, May 20, 2008 at 7:05 AM, Theodore Tso <tytso@mit.edu> wrote: > On Mon, May 19, 2008 at 03:15:09PM +0800, Dave Young wrote: >> Hi, >> >> With 2.6.26-rc2-mm1 I need to sync frequently. It's not normal as my >> understanding. >> >> 1. scp a big file from a lan server. Firstly the speed is about 8M/s, >> but the speed will slow down to 100K/s at last. After I exec "sync", >> the speed will restore. >> >> Is this a known issue? > > Dave, what filesystem are you using? Jiri's patch on this thread was > to fix a problem in ext4, which means that's fixing a problem which is > unrelated to the slow mkfs.ext2 problem (which is writing to a block > device, not a file in a ext4 filesystem), and so it's likely unrelated > to your problem (unless you're using ext4 and didn't tell us :-).
I'm using ext3. Jiri's patch fixes the my problem. Seems the problem is not related to filesystem.
> > Andrew's probably right that it may be related to the slow mkfs > problem. Can you confirm that you are seeing this on 2.6.26-rc2-mm1, > but not on stock 2.6.26.rc2?
I didn't notice same thing on 2.6.26-rc2, is it necessary for me to test on it?
Regards dave
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