Re: tuning vfs.zfs.vdev.max_pending and solving the issue of ZFS writes choking read IO

aris. The fix required adding a scheduling class which allowed the kernel thread doing the compression to be less than the priority of normal user processes (such as the X11 server). Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ Grap

Re: tuning vfs.zfs.vdev.max_pending and solving the issue of ZFS writes choking read IO

being written per TXG. Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/ma

Re: 8.0-RELEASE/amd64 - full ZFS install - low read and write disk performance

/second and a read performance of 124,347KB/second. The drives themselves are capable of 100MB/second range performance. Similar to yourself, I see 1/2 the write performance due to bandwidth limitations. Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/