| To: | Martin Steigerwald <Martin@xxxxxxxxxxxx> |
|---|---|
| Subject: | Re: XFS: Abysmal write performance because of excessive seeking (allocation groups to blame?) |
| From: | Stefan Ring <stefanrin@xxxxxxxxx> |
| Date: | Tue, 10 Apr 2012 16:02:39 +0200 |
| Cc: | xfs@xxxxxxxxxxx, Christoph Hellwig <hch@xxxxxxxxxxxxx> |
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> And is XFS aligned to the RAID 6?
>
> What does xfs_info display on it?
Yes, it’s aligned.
meta-data=/dev/mapper/vg_data-lvhome isize=256 agcount=4,
agsize=73233656 blks
= sectsz=512 attr=2
data = bsize=4096 blocks=292934624, imaxpct=5
= sunit=8 swidth=32 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal bsize=4096 blocks=143040, version=2
= sectsz=512 sunit=8 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
I changed the stripe size to 32kb in the meantime. This way, it
performs slightly better.
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