Re: [PATCH 0/4 v3] ext3/4: enhance fsync performance when using CFQ

From: Jeff Moyer
Date: Thu Apr 15 2010 - 09:14:02 EST


Jens Axboe <jens.axboe@xxxxxxxxxx> writes:

>> > This is starting to look better. Can you share what tests you did? I
>> > tried reproducing with fs_mark last time and could not.
>>
>> Did you use the fs_mark command line I (think I) had posted? What
>> storage were you using?
>
> No, I didn't see any references to example command lines. I tested on a
> few single disks, rotating and SSD. I expected the single spinning disk
> to show the problem to some extent at least, but there was no difference
> observed with 64kb blocks.

Boy, I'm really slipping. Try this one:

./fs_mark -S 1 -D 100 -N 1000 -d /mnt/test/fs_mark -s 65536 -t 1 -w 4096

Cheers,
Jeff
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/