On Oct 28, 2013, at 2:28 AM, Slawa Olhovchenkov wrote: > I can be wrong. > As I see ZFS cretate seperate thread for earch txg writing. > Also for writing to L2ARC. > As result -- up to several thousands threads created and destoyed per > second. And hundreds thousands page allocations, zeroing, maping > unmaping and freeing per seconds. Very high overhead. > > In systat -vmstat I see totfr up to 600000, prcfr up to 200000. > > Estimated overhead -- 30% of system time. > > Can anybody implement thread and page pool for txg?
Would lowering vfs.zfs.txg.timeout be a way to tame or mitigate this? - aurf _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
