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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-08-14 17:10:11 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-08-14 17:10:11 +0100 |
| commit | 2ca1b6fff7d18cf2049432ea78387cd326e8bbf2 (patch) | |
| tree | 6c62cc246c53bff9fd168102fb9eea6fca037244 /tools/python/README.sxpcfg | |
| parent | 0cd32f209e46769f59674c99644c1c95e0c1a686 (diff) | |
| download | xen-2ca1b6fff7d18cf2049432ea78387cd326e8bbf2.tar.gz xen-2ca1b6fff7d18cf2049432ea78387cd326e8bbf2.tar.bz2 xen-2ca1b6fff7d18cf2049432ea78387cd326e8bbf2.zip | |
xend: VBD QoS policy bits
Add the ability to define VBD QoS policy in the xend layer.
Consider the following vbd entry:
vbd = [
'phy:/dev/server/virtualmachine1-disk,xvda1,w,credit=3D5000/s@50ms',
]
This means that a VM may perform 5000 I/O operations per second, with
credit being replenished every 50 milliseconds.
The 'credit' xenstore value is by the blkback driver to ratelimit I/O
operations for the specific device.
Signed-off-by: William Pitcock <nenolod@dereferenced.org>
Diffstat (limited to 'tools/python/README.sxpcfg')
| -rw-r--r-- | tools/python/README.sxpcfg | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/python/README.sxpcfg b/tools/python/README.sxpcfg index 7a17fd1515..9c3dce96e8 100644 --- a/tools/python/README.sxpcfg +++ b/tools/python/README.sxpcfg @@ -82,6 +82,7 @@ vbd - uname - dev (ioemu:, .. etc) - mode (r, w. w!) + - credit vif - type |