Thank you for answering my questions. It's useful, many thanks! Apr 3, 2020, 11:00 by rjo...@redhat.com:
> 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 >
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