Re: [zfs-discuss] Performance problems due to smaller ZFS recordsize

2010-11-01 Thread Jim Nissen
Jim, They are running Solaris 10 11/06 (u3) with kernel patch 142900-12. See inline for the rest... On 10/25/10 11:19 AM, Jim Mauro wrote: Hi Jim - cross-posting to zfs-discuss, because 20X is, to say the least, compelling. Obviously, it would be awesome if we had the opportunity to

Re: [zfs-discuss] Performance problems due to smaller ZFS recordsize

2010-11-01 Thread david . lutz
This combination of tunables is probably a worst case set for doing sequential or multi-block reads, particularly from a COW file system. We know that disaggregation can occur due to small, random writes, and that this can result in an increase in IOPS required to do sequential or multi-block

Re: [zfs-discuss] Performance problems due to smaller ZFS recordsize

2010-10-25 Thread Jim Mauro
Hi Jim - cross-posting to zfs-discuss, because 20X is, to say the least, compelling. Obviously, it would be awesome if we had the opportunity to whittle-down which of the changes made this fly, or if it was a combination of the changes. Looking at them individually set

Re: [zfs-discuss] Performance problems due to smaller ZFS recordsize

2010-10-21 Thread Jim Mauro
There is nothing in here that requires zfs confidential. cross-posted to zfs discuss. On Oct 21, 2010, at 3:37 PM, Jim Nissen wrote: Cross-posting. Original Message Subject: Performance problems due to smaller ZFS recordsize Date: Thu, 21 Oct 2010 14:00:42 -0500