Oleg Nesterov wrote on Monday, March 21, 2005 6:19 AM > These patches are updated version of 'del_timer_sync: proof of concept' > 2 patches.
Looks good performance wise. Took a quick micro benchmark measurement on a 16-node numa box (32-way). Results are pretty nice (to the expectation). Time to execute del_timer_sync, averaged over 10,000 call: Vanilla 2.6.11 19,313 ns 2.6.12-rc1-mm1 81 ns del_singleshot_timer_sync 74ns Took another measurement on a 4-way smp box: Vanilla 2.6.11 648 ns 2.6.12-rc1-mm1 55 ns del_singleshot 41 ns And Andrew always asks what are the impact on real-world bench, we did not see performance regression on db transaction processing benchmark with these set of timer patches versus using del_singleshot_timer_sync. (del_singleshot_timer_sync is slightly faster, though 14 ns difference falls well into noise range) Note: I've only stress tested deleting an un-expired timer. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
