| To: | Dave Chinner <david@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [PATCH 4/4] xfstests: speed up 227 by using preallocation |
| From: | Rich Johnston <rjohnston@xxxxxxx> |
| Date: | Thu, 16 Aug 2012 14:16:41 -0500 |
| Cc: | <xfs@xxxxxxxxxxx> |
| In-reply-to: | <1343291706-14882-5-git-send-email-david@xxxxxxxxxxxxx> |
| References: | <1343291706-14882-1-git-send-email-david@xxxxxxxxxxxxx> <1343291706-14882-5-git-send-email-david@xxxxxxxxxxxxx> |
| User-agent: | Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120615 Thunderbird/13.0.1 |
On 07/26/2012 03:35 AM, Dave Chinner wrote: From: Dave Chinner <dchinner@xxxxxxxxxx> Test 227 (fsr test) creates fragmented fre space by doing lots of small writes to sparse offsets ni a file. This seeks the disk heads around a lot writing data. We don't need to write data - just trigger allocation. Hence use preallocation instead of data writes and run at allocation speed rather than data write speed. Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx> --- 227 | 46 +++++++++++++++++++++++++++++++++------------- 1 file changed, 33 insertions(+), 13 deletions(-) Looks good to me. Reviewed-by: Rich Johnston <rjohnston@xxxxxxx> |
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