On Fri, 13 Jul 2007, Eric Anderson wrote: > On 07/13/07 17:29, Sean C. Farley wrote: >> On Fri, 13 Jul 2007, Harald Schmalzbauer wrote: >> >>> I could install various OS, only when I enable -kernel-kqemu most >>> installer quit with page fault. >> >> As a side note, I found -kernel-kqemu to be slower for me than >> without it on STABLE. > > Using ubench from ports on -CURRENT, I see these kinds of numbers (for > CPU): > > Without any kqemu: 16000 -> 16800 > With kqemu, kernelmode: 180000 -> 182000 > With kqemu, usermode: 187000 -> 188000 > RAW CPU: 202000 -> 203000 Here is mine on -STABLE. It is amusing how much faster the raw CPU really is when you take these benchmark numbers into account. If I remember correctly from trying to find where QEMU was slow, kqemu user + kernel actually has significantly more context switches than just kqemu user. kqemu user ========== Ubench CPU: 74871 Ubench MEM: 8873 -------------------- Ubench AVG: 41872 kqemu user + kernel =================== Ubench CPU: 67768 Ubench MEM: 6520 -------------------- Ubench AVG: 37144 Raw === Ubench CPU: 44162 Ubench MEM: 42655 -------------------- Ubench AVG: 43408 Sean -- scf_at_FreeBSD.orgReceived on Mon Jul 23 2007 - 12:49:01 UTC
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