james.ma...@sun.com said:
> I'm not yet sure what's broken here, but there's something pathologically
> wrong with the IO rates to the device during the ZFS tests. In both cases,
> the wait queue is getting backed up, with horrific wait queue latency
> numbers. On the read side, I don't understand
I don't understand why disabling ZFS prefetch solved this
problem. The test case was a single threaded sequential write, followed
by a single threaded sequential read.
Anyone listening on ZFS have an explanation as to why disabling
prefetch solved Roland's very poor bandwidth problem?
My only th
Cross posting to zfs-discuss.
By my math, here's what you're getting;
4.6MB/sec on writes to ZFS.
2.2MB/sec on reads from ZFS.
90MB/sec on read from block device.
What is c0t1d0 - I assume it's a hardware RAID LUN,
but how many disks, and what type of LUN?
What version of Solaris (cat /etc/re
