I don't mean to be a bother -- I am sincerely interested in figuring out this puzzle.
I have a hunch but I'd like to verify a couple of things first --- how many VMs are you running? Thanks, Britt On May 11, 2013, at 6:10 PM, Thorsten Glaser wrote: > Hi *, > > I’ve upgraded my desktop at work: > > • from Kubuntu Hardy (8.04) to Debian unstable (sid), still i386 > • from aranym_0.9.13-3.1 to whatever Debian sid carries (0.9.15-1) > • from a 4x3.2 GHz AMD system to an 8x3.1 GHz Intel system > > My VMs, despite turning on the “performance” governor by writing > into sysfs, have only half the speed of before (roughly 500 ipv > 1000 pystones/sec, 70/70/61/65 instead of 192/192/192/90 BogoMIPS; > the last VM to start was always a bit slower). > > In /proc/cpuinfo I have > cpu MHz : 3060.000 > for all eight host cores (now), though. > > I did have issues with governors in the past; even on hardy, the > last VM to start was slower, and sometimes I had to start them > several times to get the full BogoMIPS value. > > I do pin VMs to single CPU cores by using taskset with a first > argument that has only a single bit set (0x1, 0x2, 0x4, 0x8). > > Does anyone else see that, and which of the changes are most > likely responsible? (Debian also builds with hardening I think, > which Kubuntu hardy didn’t do.) I’ve not yet done any real > testing, but I can probably run a hardy chroot and compare > (that keeps hardware and kernel but not the userspace); might > be able to install hardy to an LV and boot it with its own > kernel, too… the old mainboard was broken, so can’t easily > test it… but maybe someone else here sees differences between > versions on the same hardware, or across hardware with similar > nominal speed. > > For the record: the new CPU is > Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz > and the old one was an AMD X4 II or something like that. > > Ah. Before, I ran the hardy i386 -server kernel; now I run > the sid amd64 kernel (with i386 userspace). > > bye, > //mirabilos > -- > 15:39⎜«mika:#grml» mira|AO: "mit XFree86® wär’ das nicht passiert" - muhaha > 15:48⎜<thkoehler:#grml> also warum machen die xorg Jungs eigentlich alles > kaputt? :) 15:49⎜<novoid:#grml> thkoehler: weil sie als Kinder nie den > gebauten Turm selber umschmeissen durften? -- ~/.Xmodmap wonders… > > > -- > To UNSUBSCRIBE, email to [email protected] > with a subject of "unsubscribe". Trouble? Contact [email protected] > Archive: > http://lists.debian.org/[email protected] > -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
