CPU Model
grep name /proc/cpuinfo | uniq
model name : Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz
Kernel
uname -a
Linux example 3.5-trunk-amd64 #1 SMP Thu Aug 2 17:16:27 UTC 2012 x86_64 GNU/Linux
dd if=/dev/zero of=/dev/null bs=32M count=1000
33554432000 bytes (34 GB) copied, 5,14105 s, 6,5 GB/s
Disk Controller
lspci | grep AHCI
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
Disk Status
egrep 'ata[0-9]\.|SATA link up' /var/log/dmesg
[ 3420.491295] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
blockdev --getra /dev/sda
cat /sys/block/sda/queue/scheduler
[noop] deadline cfq
cat /sys/block/sda/device/queue_depth
31
dd if=/dev/sda of=/dev/null bs=1M count=16000
16777216000 bytes (17 GB) copied, 61,01 s, 275 MB/s
file1: (g=0): rw=read, bs=4K-4K/4K-4K, ioengine=libaio, iodepth=1
2.0.8
Starting 1 process
Jobs: 1 (f=1): [R] [100.0% done] [59728K/0K /s] [14.1K/0 iops] [eta 00m:00s]
file1: (groupid=0, jobs=1): err= 0: pid=8300
read : io=3520.8MB, bw=60086KB/s, iops=15021 , runt= 60001msec
slat (usec): min=7 , max=200 , avg=11.10, stdev= 3.99
clat (usec): min=1 , max=7992 , avg=52.54, stdev=14.51
lat (usec): min=33 , max=8017 , avg=64.05, stdev=14.72
clat percentiles (usec):
| 1.00th=[ 30], 5.00th=[ 32], 10.00th=[ 37], 20.00th=[ 54],
| 30.00th=[ 54], 40.00th=[ 55], 50.00th=[ 55], 60.00th=[ 55],
| 70.00th=[ 56], 80.00th=[ 56], 90.00th=[ 56], 95.00th=[ 57],
| 99.00th=[ 58], 99.50th=[ 63], 99.90th=[ 87], 99.95th=[ 104],
| 99.99th=[ 215]
bw (KB/s) : min=57752, max=63456, per=100.00%, avg=60093.04, stdev=679.79
lat (usec) : 2=0.02%, 4=0.04%, 10=0.01%, 20=0.03%, 50=17.14%
lat (usec) : 100=82.70%, 250=0.05%, 500=0.01%, 750=0.01%
lat (msec) : 2=0.01%, 4=0.01%, 10=0.01%
cpu : usr=16.03%, sys=30.95%, ctx=903432, majf=0, minf=24
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued : total=r=901301/w=0/d=0, short=r=0/w=0/d=0
Run status group 0 (all jobs):
READ: io=3520.8MB, aggrb=60085KB/s, minb=60085KB/s, maxb=60085KB/s, mint=60001msec, maxt=60001msec
Disk stats (read/write):
sda: ios=900661/192, merge=0/0, ticks=27164/40, in_queue=26504, util=44.11%
file1: (g=0): rw=randread, bs=4K-4K/4K-4K, ioengine=libaio, iodepth=32
2.0.8
Starting 1 process
Jobs: 1 (f=1): [r] [100.0% done] [240.9M/0K /s] [61.7K/0 iops] [eta 00m:00s]
file1: (groupid=0, jobs=1): err= 0: pid=8296
read : io=14842MB, bw=253300KB/s, iops=63325 , runt= 60001msec
slat (usec): min=3 , max=411 , avg=11.03, stdev= 4.66
clat (usec): min=125 , max=5463 , avg=491.02, stdev=60.42
lat (usec): min=132 , max=5466 , avg=502.64, stdev=60.69
clat percentiles (usec):
| 1.00th=[ 382], 5.00th=[ 410], 10.00th=[ 426], 20.00th=[ 454],
| 30.00th=[ 470], 40.00th=[ 478], 50.00th=[ 486], 60.00th=[ 494],
| 70.00th=[ 506], 80.00th=[ 516], 90.00th=[ 564], 95.00th=[ 612],
| 99.00th=[ 660], 99.50th=[ 668], 99.90th=[ 716], 99.95th=[ 740],
| 99.99th=[ 1080]
bw (KB/s) : min=245128, max=285552, per=100.00%, avg=253367.22, stdev=13973.33
lat (usec) : 250=0.01%, 500=65.74%, 750=34.22%, 1000=0.03%
lat (msec) : 2=0.01%, 4=0.01%, 10=0.01%
cpu : usr=20.29%, sys=79.48%, ctx=5275, majf=0, minf=54
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=100.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.1%, 64=0.0%, >=64=0.0%
issued : total=r=3799568/w=0/d=0, short=r=0/w=0/d=0
Run status group 0 (all jobs):
READ: io=14842MB, aggrb=253300KB/s, minb=253300KB/s, maxb=253300KB/s, mint=60001msec, maxt=60001msec
Disk stats (read/write):
sda: ios=3795820/50, merge=0/0, ticks=391676/40, in_queue=389096, util=99.90%
