I'm seeing absolutely terrible disk performance for my virtual machines running
under KVM.
My ZFS pool is 6 Western Digital AV-25 500GB disks arranged in 3 mirrored vdevs
connected to an LSI 9210 (reflashed IBM M1015) in IT mode.
My KVM startup script:
/usr/bin/qemu-kvm \
-enable-kvm \
-smp 2
Use default block size. Larger the better. As for pinpointing issues, try
iostat -xnc and look at iowait. Another thing that can help is some dtrace in
opt/dtt and look at your write sizes. Run atto disk bench in the vm if it's
windows.
I would expect-a-guess a single sequential write around 2
e improved
performance, going up to 50MB/s
-Original Message-
From: Russell Hansen [mailto:russ...@new-swankton.net]
Sent: woensdag 4 januari 2012 5:51
To: Discussion list for OpenIndiana
Subject: [OpenIndiana-discuss] Appalling disk performance for KVM
I'm seeing absolutely terrible d
ssage-
From: Open Indiana [mailto:openindi...@out-side.nl]
Sent: woensdag 4 januari 2012 9:35
To: 'Discussion list for OpenIndiana'
Subject: Re: [OpenIndiana-discuss] Appalling disk performance for KVM
What you could have done was:
1. use Virtualbox for your virtual OS's
2. create a
I guess it would appear to be a ZIL related issue.
# zfs set sync=standard
E:\Download>copy sol-11-exp-201011-live-x86.iso c:\temp
1 file(s) copied.
Version Number: Windows NT 5.2 (Build 3790)
Exit Time:2:22 pm, Wednesday, January 4 2012
Elapsed Time: 0:05:42.122
Process Ti
