Hi. 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 slowdown. 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? Reco
