markw@osdl.org wrote:
>Results from 7.4beta5
> http://developer.osdl.org/markw/dbt2-pgsql/188/
> - metric 1446.01
>
>
CPU: P4 / Xeon with 2 hyper-threads, speed 1497.51 MHz (estimated)
Counted GLOBAL_POWER_EVENTS events (time during which processor is not stopped) with a unit mask of 0x01 (count cycles
whenprocessor is active) count 100000
samples % app name symbol name
15369575 9.6780 postgres SearchCatCache
13714258 8.6357 vmlinux .text.lock.signal
10611912 6.6822 vmlinux do_sigaction
4400461 2.7709 vmlinux rm_from_queue
18% cpu time in the kernel signal handlers.
What are signals used for by postgres? I've seen the sigalarm to
implement timeouts, what else?
-- Manfred