Check available clocksource?

kushalkoolwal · 08-24-2008, 08:43 PM

A linux kernel uses clocksource for doing many activities. I am doing some latency comparison benchmarking on my system and hence I would like to know the following:

How can I know what different clock sources (for example: hpet acpi_pm jiffies tsc) are available on my system.

And which one of them the Linux kernel is using currently?

I am using Debian 4.0 with 2.6.26 kernel.

Thanks

stress_junkie · 08-25-2008, 05:37 PM

http://kerneltrap.org/search/node/clocksource

jenaniston · 02-22-2010, 02:56 PM

Quote:

Originally Posted by kushalkoolwal

A linux kernel uses clocksource for doing many activities. . . .
How can I know what different clock sources (for example: hpet acpi_pm jiffies tsc) are available on my system.

And which one of them the Linux kernel is using currently?
. . .

The two files in /sys/devices/system/clocksource/clocksource0/ . . .

available_clocksource

current_clocksource

(kernel: 2.6.28-11-generic /and also others of course)