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
[ 51.020846] ata6.00: ATA-8: WDC WD1003FBYX-01Y7B0, 01.01V01, max UDMA/133
[ 51.020850] ata6.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[ 51.022263] ata6.00: configured for UDMA/133
dd if=/dev/sda of=/dev/null bs=1M count=16000
16777216000 bytes (17 GB) copied, 121.875 s, 138 MB/s
dd if=/dev/zero of=/dev/sda bs=1M count=16000
16777216000 bytes (17 GB) copied, 122.691 s, 137 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 584 99 99667 16 55828 8 2028 97 141690 11 394.2 8
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: 83 seeks/second, 12.039 ms random access time (32836312 < offsets < 1000141210555)
Threads: 02 Results: 96 seeks/second, 10.409 ms random access time (333649931 < offsets < 1000070138412)
Threads: 04 Results: 112 seeks/second, 8.860 ms random access time (528904918 < offsets < 1000122562588)
Threads: 08 Results: 129 seeks/second, 7.712 ms random access time (73011087 < offsets < 999949442688)
Threads: 16 Results: 153 seeks/second, 6.532 ms random access time (442386421 < offsets < 1000129646282)
Threads: 32 Results: 179 seeks/second, 5.561 ms random access time (142806591 < offsets < 1000113296824)
