Apologies: I have since found the patches in the mail list archive, and had success using http://www.matrixstorm.com/software/linux/2.6.31-skas3.patch against a vanilla kernel 2.6.31
It did give a nice performance improvement. Thanks! Simon On Fri, Mar 12, 2010 at 7:12 PM, Simon Knight <simon.kni...@gmail.com> wrote: > Hello, > I am using UML as part of Netkit, to do large scale network > emulations. I am interested in the skas3 patch to improve performance. > When booting a UML guest system, I get the following output: > Checking for the skas3 patch in the host: > - /proc/mm...not found: No such file or directory > - PTRACE_FAULTINFO...not found > - PTRACE_LDT...not found > UML running in SKAS0 mode > > Suggesting that my Ubuntu 9.10 kernel 2.6.31-20-generic-pae doesn't > have the skas patch. > > After much browsing, the most recent version of the skas patch I could > find was at http://uml.linode.com/uml/blaisorblade/patches/skas3-2.6/ > and is > skas-2.6.20-v9-pre9/ 07-Feb-2007 15:11 > > I have been unable to apply this to my kernel, many of the folders and > files are different to the patch (not suprising given its age). > > Is the performance boost of applying the skas patches still > significant with recent kernels? I am doing large scale emulations, > with many virtual machines running Quagga processes. > If it is worth it, does someone have a link to installing the patches > in a recent version of Ubuntu (or a recent vanilla kernel), or at > least a link to the patches? > The other alternative is to downgrade my kernel to 2.6.20; would this > older kernel performance be offset by applying the skas patches? > > Thanks for your time, > Simon > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
