jtune not showing resource usage - fixed
Miroslav Lachman
000.fbsd at quip.cz
Wed Sep 26 10:09:35 PDT 2007
Chris Thunes wrote:
> On 8/13/07, *Miroslav Lachman* <000.fbsd at quip.cz
> <mailto:000.fbsd at quip.cz>> wrote:
>
> Chris Thunes wrote:
> > Hey all,
> > I've been working with the resource limiting patches on a 6.2
> installation
> > and haven't been able to get jtune to show memory usage for jails
> at all.
> >
> > [root at virt1] ~ # jtune -j 15 -i
> > JID Hostname Memory Used / Limit CPU Shares
> > 15 jail0.rootbsd.net <http://jail0.rootbsd.net> 0 M / 256 M 0
> >
> > I have the limits enabled in sysctl and really have idea as to
> why this
> > wouldn't be displaying correctly. If there is anyone who can
> point me in the
> > right direction the help would be greatly appreciated.
>
> Hi,
> I had same question more than month ago, but no answer (2007-06-29). So
> I think no competent person is subscribed to this list.
> [I CCed cdjones now = maybe he knows :)]
>
> Miroslav Lachman
>
>
> I found the problem and was able to fix it and created a small patch for
> anyone who needs this fixed. A function called prison_memory in
> sys/kern/kern_jail.c is called to calculate the memory usage for a given
> jail but this value is never stored back to the corresponding prison
> object which is used by jtune to check the memory usage. This patch just
> drops a few lines in at the end of prison_memory to store this value to
> the structure. If anyone knows any adverse side effects this would cause
> please let me know.
>
> - Chris
Hi,
I tried your patch, but without success. My version of kern_jail.c
(after patching by cdjones_jail_soc2006.patch) does not have those lines
which your patch wants to remove. (jtune still showing 0M usage [freebsd
6.2])
Any ideas?
Miroslav Lachman
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