wtorek, 28 lipca 2009

SAS vs SSD with vdbench





























































Server SAS vs SSD
HP DL360 G6 8x146GB SAS 15k RAID 10 HP DL360 G6 8x146GB SAS 15k RAID 50 DELL M600 2x146GB SAS 15K RAID1 Sun X4450 4x32GB SSD Sun X4140/X4440 4x32GB SSD Sun T5240 4x32GB SSD
Random Read (4K) 2.1K IOPS 1.9K IOPS 0.6K IOPS 98.4K IOPS 33.8K IOPS 71.5K IOPS
Random Write (4K) 1.9K IOPS 1.1K IOPS 0.25K IOPS 31.8K IOPS 16.6K IOPS 14.4K IOPS
50-50 Read/Write (4K) 2.0K IOPS 1.4K IOPS 0.3K IOPS 14.9K IOPS 13.3K IOPS 15.7K IOPS
Sequential Read (MB/sec) 383 MB/sec 245 MB/sec 71 MB/sec 764 MB/sec 463 MB/sec 1012 MB/sec
Sequential Write (MB/sec) 219 MB/sec 597 MB/sec 70 MB/sec 376 MB/sec 470 MB/sec 531 MB/sec


SSD results get from here
Test file was:


sd=sd1,lun=/dev/cciss/c0d0p5,openflags=o_direct
*wd=wd1,sd=sd1,xfersize=4096,rdpct=100
*rd=run1,wd=wd1,iorate=100,elapsed=10,interval=1

wd=wm_80dr,sd=sd*,readpct=0,rhpct=0,seekpct=100
wd=ws_80dr,sd=sd*,readpct=0,rhpct=0,seekpct=0
wd=rm_80dr,sd=(sd1-sd80),readpct=100,rhpct=0,seekpct=100
wd=rs_80dr,sd=(sd1-sd80),readpct=100,rhpct=0,seekpct=0
wd=rwm_80dr,sd=sd*,readpct=50,rhpct=0,seekpct=100
rd=default
###Random Read and writes tests varying transfer size
rd=default,el=30m,in=6,forx=(4K),forth=(32),io=max,pause=20
rd=run1_rm_80dr,wd=rm_80dr
rd=run2_wm_80dr,wd=wm_80dr
rd=run3_rwm_80dr,wd=rwm_80dr
###Sequential read and Write tests varying transfer size
rd=default,el=30m,in=6,forx=(512k),forth=(32),io=max,pause=20
rd=run4_rs_80dr,wd=rs_80dr
rd=run5_ws_80dr,wd=ws_80dr

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