I have ported Anil''s passive profile-capable OProfile patch to Linux 3.2. I have be able to hobble this patch along to new kernel versions, but it is in need of additional work if it is to be submitted upstream. Please see: http://www.flyn.org/patches/linux-xen-passive-oprofile/linux-3.2-xen-passive-oprofile.patch.gz With this patch applied to Linux 3.2, I can perform passive profiling of an unprivileged Xen domain. -- Mike :wq
On Sat, Jan 28, 2012 at 05:54:49PM -0600, W. Michael Petullo wrote:> I have ported Anil''s passive profile-capable OProfile patch to Linux > 3.2. I have be able to hobble this patch along to new kernel versions, but > it is in need of additional work if it is to be submitted upstream. Please > see: > > http://www.flyn.org/patches/linux-xen-passive-oprofile/linux-3.2-xen-passive-oprofile.patch.gz > > With this patch applied to Linux 3.2, I can perform passive > profiling of an unprivileged Xen domain.What version of oprofile did you use?> > -- > Mike > > :wq > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel
>> I have ported Anil''s passive profile-capable OProfile patch to Linux >> 3.2. I have be able to hobble this patch along to new kernel versions, but >> it is in need of additional work if it is to be submitted upstream. Please >> see: >> >> http://www.flyn.org/patches/linux-xen-passive-oprofile/linux-3.2-xen-passive-oprofile.patch.gz >> >> With this patch applied to Linux 3.2, I can perform passive >> profiling of an unprivileged Xen domain.> What version of oprofile did you use?Fedora''s oprofile-0.9.6-21.fc16.x86_64. -- Mike :wq
On Tue, Jan 31, 2012 at 07:28:12PM -0600, W. Michael Petullo wrote:> >> I have ported Anil''s passive profile-capable OProfile patch to Linux > >> 3.2. I have be able to hobble this patch along to new kernel versions, but > >> it is in need of additional work if it is to be submitted upstream. Please > >> see: > >> > >> http://www.flyn.org/patches/linux-xen-passive-oprofile/linux-3.2-xen-passive-oprofile.patch.gz > >> > >> With this patch applied to Linux 3.2, I can perform passive > >> profiling of an unprivileged Xen domain. > > > What version of oprofile did you use? > > Fedora''s oprofile-0.9.6-21.fc16.x86_64.So I took a spin at this - it applies nicely and cleanly to 3.2, and was wondering how you profile passive domains? I do something like this: opcontrol --vmlinux=/mnt/lab/vmlinux-dom0 --xen=/mnt/lab/xen-syms --passive-domains=3,2 --callgraph=10 --passive-images=/mnt/lab/10gb/tiny-vmlinux -p=cpu opcontrol --start-daemon opcontrol --start /mnt/lab/10gb/create_csv.sh 1 opcontrol --stop The little create_csv.sh makes the two domains talk to each other (netperf) and I want to get a feel for what it is happening. But what I get is exclusivly to domain0 and to xen. Nothing about the guests? Are you doing something speciail to profile the passive domains? Thanks.