Re: Slow XFS write
On Wed, Aug 22, 2018 at 04:15:30PM +0200, Martin LEUSCH wrote:
> To complete the description there is infos about the XFS partition:
> meta-data=/dev/sda4 isize=256 agcount=11, agsize=268435455 blks
> = sectsz=512 attr=2, projid32bit=1
> = crc=0 finobt=0
> data = bsize=4096 blocks=2920268544, imaxpct=5
> = sunit=0 swidth=0 blks
> naming =version 2 bsize=4096 ascii-ci=0 ftype=0
> log =internal bsize=4096 blocks=521728, version=2
> = sectsz=512 sunit=0 blks, lazy-count=1
> realtime =none extsz=4096 blocks=0, rtextents=0
Nothing unusual IMO. Certainly nothing that could explain such a
Can you provide a result of 'perf top'? Just to be sure it's xfs that's
to be blamed.
> And infos about the RAID5 volume:
Looks suspiciously similar to LSI MegaRAID.
Is controller firmware current? Is it possible to upgrade it?
Since you seem to have BBU, have you considered enabling WriteBack mode?