> thanks for your help. I cloned the git and compiled it - but I'm not > completely sure how to enable the throttling finally - there were > several mails regarding averages and max values... And the "unit" of > the values would be interesting.
Hi Erik, The main settings are bps, bps_rd and bps_wr for total, read and write bandwith throttling (unit is bytes) and iops, iops_rd, iops_wr for IO per second throttling (unit is IO operation). You should specify your settings on the -drive command line like in: -drive file=foo.raw,if=virtio,cache=none,bps=1048576 for a 1 MB total bandwith. In addition to that there is another set of parameters to configure the burst ability of the throttling. These setting are: bps_max, bps_rd_max, bps_wr_max, iops_mx, iops_rd_max, and iops_wr_max. Some bursting is enabled by default. >From what Paolo said you should set bps_max = 1 to specify that the default bursting is not set. So: -drive file=foo.raw,if=virtio,cache=none,bps=1048576,bps_max=1 for a 1 MB total bandwith with almost no burst. Best regards Benoît ps: take care of updating your repository and recompiling it since I made some changes for you to use. (use git fetch origin) > > Merci beaucoup. > > Best regards, > > Erik > > >
