Hello,
I'm seeing exactly the same issues on my 5 disk raidz pool again.
In brief:
I can only write to the filesystem at ~20MB/s, and read from it at
~25MB/s. Normally, I'd expect to be able to write at nearer 50-100
MB/s, and read at ~200MB/s.
The values from zpool iostat -v are also strange.
Christopher Key wrote:
I'm running FreeBSD 7.2 amd64 on a system with 2GB RAM. I've a zfs pool
using raidz1 over five 2Tb SATA drives connected via a port multiplier
and a RR2314 card.
I can write to a filesystem on this pool at approx 20MB/s:
# dd if=/dev/urandom of=$FS/testdump bs=1m
Carl Chave wrote:
relatively idle. You can request a more accurate view of current
bandwidth usage by specifying
an interval.
Thanks Carl,
I was aware of the option, the posted stats were from:
# zpool iostat -v 10
with the 10s period wholly within the ~40s transfer time.
King regards,
Hello,
I'm running FreeBSD 7.2 amd64 on a system with 2GB RAM. I've a zfs pool
using raidz1 over five 2Tb SATA drives connected via a port multiplier
and a RR2314 card.
I can write to a filesystem on this pool at approx 20MB/s:
# dd if=/dev/urandom of=$FS/testdump bs=1m count=1k
1024+0 records
Chris,
Don't know, but, I will paste in a portion of the ZFS admin guide from SUN:
Because these statistics are cumulative since boot, bandwidth might
appear low if the pool is
relatively idle. You can request a more accurate view of current
bandwidth usage by specifying
an interval. For
