RAID Setup
Controller: ?3ware 9750i4 Level: RAID10 256K Disks: 4 x ?WD5003ABYX
Write Cache Setting: Enabled Read Cache Setting: Intelligent Drive Queuing Mode: Enabled StorSave Profile: Balanced
./tw_cli_amd64 /c7/u0 set storsave=balance
Setting Command Storsave Policy for unit /c7/u0 to [balance] ... Done.
RAID Performance
blockdev --getra /dev/sda
256
cat /sys/block/sda/queue/scheduler
noop anticipatory deadline [cfq]
cat /sys/block/sda/device/queue_depth
254
echo 3 > /proc/sys/vm/drop_caches
dd if=/dev/sda of=/dev/null bs=1M count=16000
16777216000 bytes (17 GB) copied, 60.9246 s, 275 MB/s
dd if=/dev/zero of=/dev/sda bs=1M count=16000
16777216000 bytes (17 GB) copied, 54.4494 s, 308 MB/s
parted /dev/sda mklabel msdos
parted /dev/sda mkpart p 2048s 64g
blockdev --rereadpt /dev/sda
mkfs.ext3 /dev/sda1
mount -o noatime /dev/sda1 /mnt
echo 3 > /proc/sys/vm/drop_caches
bonnie++ -d /mnt -u root -n 0 -r 6000
Version 1.96 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
finnix 12G 685 99 173651 27 100215 12 2142 98 321816 16 1183 29
cd /tmp; http_proxy=http://proxy.lan.gsd-software.net:8080 wget http://debian.gsd-software.net/benchmark/seeker_baryluk_x86; chmod +x seeker_baryluk_x86
for threads in 01 02 04 08 16 32; do echo -n "Threads: $threads "; ./seeker_baryluk_x86 /dev/sda $threads | grep Results; sleep 1; done
Threads: 01 Results: 81 seeks/second, 12.315 ms random access time (23189903 < offsets < 999654590779)
Threads: 02 Results: 162 seeks/second, 6.143 ms random access time (137642353 < offsets < 999640072701)
Threads: 04 Results: 254 seeks/second, 3.934 ms random access time (114833352 < offsets < 999875786820)
Threads: 08 Results: 322 seeks/second, 3.103 ms random access time (35928728 < offsets < 999942407096)
Threads: 16 Results: 400 seeks/second, 2.500 ms random access time (70003232 < offsets < 999969261210)
Threads: 32 Results: 468 seeks/second, 2.135 ms random access time (43465295 < offsets < 999946594233)
