Virident tachIOn 400GB

sysbench fileio benchmarks for Virident tachIOn 400GB PCI-E Flash card

Server specification:

• Supermicro X8DTH series motherboard
• 2 x Xeon E5520 (2.27GHz) processors w/HT enabled (16 cores)
• 64GB of ECC/Registered DDR3 DRAM
• Centos 5.3 2-6.18.164 Kernel
• Filesystem is XFS formatted with mkfs.xfs -s size=4096 option ( size=4096, sector size, is very important to have aligned IO requests) and mounted with nobarrier option
• Benchmark: sysbench fileio on 100GB file, 16KB blocksize
• Virident tachIOn 400GB SLC card
• FusionIO ioDrive 160GB SLC card

(no max response time, as this data was not gathered in the script)

Card formatted with -s 75% ( 25% of space reservation)

#!/bin/sh
set -u
set -x
set -e

for size in 100G; do
   for mode in seqwr seqrd rndrd rndwr rndrw; do
   for blksize in 16384 ; do
      ./sysbench --test=fileio --file-num=64 --file-total-size=$size prepare
      for threads in 1 4 8 16 32 64; do
         echo "====== testing $blksize in $threads threads"
         echo PARAMS $size $mode $threads $blksize > sysbench-size-$size-mode-$mode-threads-$threads-blksz-$blksize
         ./sysbench --test=fileio --file-total-size=$size --file-test-mode=$mode\
            --max-time=120 --max-requests=100000000 --num-threads=$threads --init-rng=on \
            --file-num=64 --file-extra-flags=direct --file-fsync-freq=0 --file-block-size=$blksize run \
            | tee -a sysbench-size-$size-mode-$mode-threads-$threads-blksz-$blksize 2>&1
      done
      ./sysbench --test=fileio --file-total-size=$size cleanup
   done
   done
done