On 07/01/2011 12:01 AM, Sašo Kiselkov wrote: > On 06/30/2011 11:56 PM, Sašo Kiselkov wrote: >> Hm, it appears I'll have to do some reboots and more extensive testing. >> I tried tuning various settings and then returned everything back to the >> defaults. Yet, now I can ramp the number of concurrent output streams to >> ~170 instead of the original 95 (even then the pool still has capacity >> left, I'm actually running out of CPU power). The txg commit occurs at >> roughly every 15 (or so) seconds, which is what I wanted. Strange that >> this occurs even after I returned everything to the defaults... I'll try >> doing some more testing on this once I move the production deployment to >> a different system and I'll have more time to experiment with this >> machine. Anyways, thanks for the suggestions, it helped a lot. >> >> Regards, >> -- >> Saso > > Just a follow correction: one parameter was indeed changed: > zfs_write_limit_inflated. In the source it's set to zero, I've set it to > 0x200000000.
So it seems I was wrong after all and it didn't help. So the question remains: is there a way how to force ZFS *NOT* to commit a txg before a certain minimum amount of data has accumulated in it, or before the txg timeout is reached? All the best, -- Saso _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
