lspci | grep AHCI
00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller
uname -a
Linux finnix 2.6.30-1-amd64-finnix #1 SMP Tue Aug 4 22:38:20 PDT 2009 x86_64 GNU/Linux
egrep 'ata[0-9]\.' /var/log/dmesg
[ 55.291274] ata6.00: ATA-8: WDC WD3000HLFS-01G6U4, 04.04V06, max UDMA/133
[ 55.291278] ata6.00: 586072368 sectors, multi 0: LBA48 NCQ (depth 31/32)
[ 55.299284] ata6.00: configured for UDMA/133
dd if=/dev/sda of=/dev/null bs=1M count=16000
16777216000 bytes (17 GB) copied, 134.407 s, 125 MB/s
dd if=/dev/zero of=/dev/sda bs=1M count=16000
16777216000 bytes (17 GB) copied, 135.462 s, 124 MB/s
parted /dev/sda mklabel msdos
parted /dev/sda mkpart p 2048s 128g
blockdev --rereadpt /dev/sda
mkfs.ext3 /dev/sda1
mount -o noatime /dev/sda1 /mnt
bonnie++ -d /mnt -u root -n 0
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 599 99 95169 15 52749 7 2080 99 130603 8 506.8 9
cd /tmp; http_proxy=http://proxy.gsd-software.net:8080 wget http://smp.if.uj.edu.pl/~baryluk/seeker_baryluk; chmod +x seeker_baryluk
cat /sys/block/sda/queue/scheduler
noop anticipatory deadline [cfq]
cat /sys/block/sda/device/queue_depth
31
for threads in 01 02 04 08 16 32; do echo -n "Threads: $threads "; ./seeker_baryluk /dev/sda $threads | grep Results; sleep 1; done
Threads: 01 Results: 141 seeks/second, 7.051 ms random access time (64767341 < offsets < 299892812799)
Threads: 02 Results: 160 seeks/second, 6.247 ms random access time (30559069 < offsets < 300058975328)
Threads: 04 Results: 182 seeks/second, 5.466 ms random access time (55372698 < offsets < 299988130826)
Threads: 08 Results: 230 seeks/second, 4.345 ms random access time (19120308 < offsets < 300050473004)
Threads: 16 Results: 274 seeks/second, 3.640 ms random access time (6371852 < offsets < 300002586649)
Threads: 32 Results: 314 seeks/second, 3.178 ms random access time (13561407 < offsets < 300059393542)
