9:47 a.m.
This two part patch collects network interface stats from KVM domains.
With this patch, virt-top will show the stats in its network interface
view, as in the screengrab below.
Rich.
virt-top 15:47:38 - x86_64 4/4CPU 2814MHz 3967MB 0.1%
1 domains, 1 active, 1 running, 0 sleeping, 0 paused, 0 inactive D:0 O:0 X:0
CPU: 3.0% Mem: 250 MB (250 MB by guests)
ID S RXBY TXBY RXPK TXPK DOMAIN INTERFACE
1 R 222K 5436 175 78 debian32kvm vnet0
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9:53 a.m.
New subject: [Libvir] [PATCH 1/2] KVM network stats
Firstly there's a bug in how we parse /proc/net/dev. The format of each
interface line turns out to be:
%6s:...
so in other words network interface names smaller than 6 characters are
right justified (padded on the left with spaces).
This isn't a problem for Xen because the shortest interface name (eg.
'vif1.0') is always 6 or more characters long. However it is a problem
for QEMU and KVM because we have interface names such as 'vnet0'.
In any case, the following patch fixes this bug.
Rich.
--
Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in
England and Wales under Company Registration No. 03798903
11:20 a.m.
New subject: [Libvir] [PATCH 1/2] KVM network stats
On Thu, Nov 15, 2007 at 03:53:00PM +0000, Richard W.M. Jones wrote:
Firstly there's a bug in how we parse /proc/net/dev. The format
of each
interface line turns out to be:
%6s:...
so in other words network interface names smaller than 6 characters are
right justified (padded on the left with spaces).
This isn't a problem for Xen because the shortest interface name (eg.
'vif1.0') is always 6 or more characters long. However it is a problem
for QEMU and KVM because we have interface names such as 'vnet0'.
In any case, the following patch fixes this bug.
Looks fine to me, bugfix, +1
Daniel
--
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard | virtualization library http://libvirt.org/
veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/
11:45 a.m.
New subject: [Libvir] [PATCH 1/2] KVM network stats
Daniel Veillard wrote:
On Thu, Nov 15, 2007 at 03:53:00PM +0000, Richard W.M. Jones wrote:
> Firstly there's a bug in how we parse /proc/net/dev. The format of each
> interface line turns out to be:
>
> %6s:...
>
> so in other words network interface names smaller than 6 characters are
> right justified (padded on the left with spaces).
>
> This isn't a problem for Xen because the shortest interface name (eg.
> 'vif1.0') is always 6 or more characters long. However it is a problem
> for QEMU and KVM because we have interface names such as 'vnet0'.
>
> In any case, the following patch fixes this bug.
Looks fine to me, bugfix, +1
Thanks, both patches applied.
Rich.
--
Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in
England and Wales under Company Registration No. 03798903
9:53 a.m.
New subject: [Libvir] [PATCH 2/2] KVM network stats
This patch adds the implementation of virDomainInterfaceStats for QEMU &
KVM domains. The function simply verifies that the requested path
(interface name) belongs to the domain, then calls the existing code in
stats_linux.c.
Rich.
--
Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in
England and Wales under Company Registration No. 03798903
11:23 a.m.
New subject: [Libvir] [PATCH 2/2] KVM network stats
On Thu, Nov 15, 2007 at 03:53:03PM +0000, Richard W.M. Jones wrote:
This patch adds the implementation of virDomainInterfaceStats for
QEMU &
KVM domains. The function simply verifies that the requested path
(interface name) belongs to the domain, then calls the existing code in
stats_linux.c.
Okay since it's just filtering around the existing Linux extraction
routine it's rather simple, looks fine to me, +1
Daniel
--
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard | virtualization library http://libvirt.org/
veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/
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