On Thu, Apr 02, 2020 at 11:27:57PM +0200, chl...@tutanota.com wrote: > I come across this page libguestfs.org/guestfs-performance.1.html > <http://libguestfs.org/guestfs-performance.1.html> This raises my interest. I > am currently learning how to benchmark performance qemu. So here is my > questions: > > 1. Can I use guestfish or any tools provided by libguestfs to benchmark qemu? > How? (The command I use below is correct or what's the correct command to > execute it?)
Yes, see: https://github.com/libguestfs/libguestfs-analysis-tools and my various postings on performance in 2016: https://rwmj.wordpress.com/2016/03/ https://rwmj.wordpress.com/2016/05/ > The preliminarily run I use is "time guestfish --ro -a disk.img -i exit run > -v -x" and its output on console wrt the time are > > real 0m3.713s > user 0m1.968s > sys 0m0.741s This is reasonable, considering that debugging is enabled. > There many output with -v -x params enabled > > ... > guestfsd: => internal_autosync (0x11a) took 0.05 secs > libguestfs: trace: internal_autosync = 0 > libguestfs: sending SIGTERM to process 11629 > libguestfs: qemu maxrss 235720K > libguestfs: trace: shutdown = 0 > libguestfs: trace: close > libguestfs: closing guestfs handle 0x562ae3df6c10 (state 0) > libguestfs: command: run: rm > libguestfs: command: run: \ -rf /tmp/libguestfsIDYj9s > libguestfs: command: run: rm > libguestfs: command: run: \ -rf /run/user/1000/libguestfs2SKM4c > > 2. If the tool such as guestfish (or any other tools provided by libguestfs) > can be used to benchmark qemu's performance, is it possible to identify the > execution time spent on different processes e.g. init? How? > > 3. How do I interpret the output with -v -x for the command guestfish (like > the command being executed below)? The analysis tools basically do all this. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v _______________________________________________ Libguestfs mailing list Libguestfs@redhat.com https://www.redhat.com/mailman/listinfo/libguestfs
