Ubuntu
linux package

  1. Bug #1090715
  2. Comment #8

Comment 8 for bug 1090715

Revision history for this message
Aaron Johnson (acjohnson) wrote : Re: slow and sporadic hard drive write performance on ivy bridge (Toshiba L840 Core i7-3612QM)

Look at my speed tests now :

acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 0.0583449 s, 1.4 GB/s
acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 0.056132 s, 1.5 GB/s
acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 0.0531594 s, 1.6 GB/s
acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 0.0499333 s, 1.7 GB/s
acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 0.0529071 s, 1.6 GB/s
acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 0.0537926 s, 1.6 GB/s
acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 0.055174 s, 1.5 GB/s
acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 0.0580251 s, 1.4 GB/s

:)