Comment 129 for bug 620074

Created attachment 20027
latencytop captures + fio results amd64

I have run the fio job on a different machine on two different discs. While running the fio job, I have captured the latency with latencytop. Each test was executed twice. Once with 2*bzip-urandom and the other without cpu consumption.
You can find the test results for every io scheduler in the archive.

100MB/s disk + 2bzip (2009-01-27.0847-2.6.28.2-acpi_pm)
100MB/s disk (2009-01-27.0908-2.6.28.2-acpi_pm)
40MB/s disk + 2bzip (2009-01-27.0934-2.6.28.2-acpi_pm)
40MB/s disk (2009-01-27.1029-2.6.28.2-acpi_pm)

Total latency - cfq
min: 133.3 ms | max 18555.8 ms | avg 5978.08
min: 25.5 ms | max 5057.2 ms | avg 1660.21
min: 369.0 ms | max 11872.0 ms | avg 3764.57
min: 557.0 ms | max 12215.6 ms | avg 3002.81

fio results - cfq
mint 25msec | maxt 1669msec
mint 23msec | maxt 1596msec
mint 77msec | maxt 2370msec
mint 106msec | maxt 738msec