On 23/12/12 11:44, Thomas Fjellstrom wrote:
moose@mrbig:/mnt/mrbig/data/test$ iozone -a -s 32G -r 8M
random random
bkwd record stride
KB reclen write rewrite read reread read write
read rewrite read fwrite frewrite fread freread
33554432 8192 212507 210382 630327 630852 372807 161710
388319 4922757 617347 210642 217122 717279 716150
Is this normal for a 7 disk (2TB seagate barracudas) raid array on a pcie x8
sas controller?
For comparo using the same command line. This is a running system and
has a slight but measurable load on the array, but not enough that it
should really impact the numbers.
This is 10 x WD 2TB Green drives (sloooow) in RAID-6 on a pair of those
cards. Formatted ext4.
mpt2sas0: LSISAS2008: FWVersion(15.00.00.00), ChipRevision(0x02),
BiosVersion(00.00.00.00)
md0 : active raid6 sdl[0] sdr[5] sdo[6] sdp[7] sdn[8] sdk[9] sdm[10]
sdq[11] sds[4] sdf[12]
15628106752 blocks super 1.2 level 6, 128k chunk, algorithm 2
[10/10] [UUUUUUUUUU]
bitmap: 2/15 pages [8KB], 65536KB chunk
random
random bkwd record stride
KB reclen write rewrite read reread read
write read rewrite read fwrite frewrite fread freread
33554432 8192 349745 448840 481170 488821 284313
312892 355422 2288708 440818 397878 469964 478596 496619
Not sure this actually means anything though.
Regards,
Brad
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