On 2010-01-05 at 15:10:33 [+0100], Rene Gollent <anevilyak@xxxxxxxxx> wrote: > On Tue, Jan 5, 2010 at 7:22 AM, Ingo Weinhold <ingo_weinhold@xxxxxx> wrote: > > That still sounds quite slow. I can't really place the CPU > > performancewise, > > though. Do you have any numbers for our competitors (Linux, FreeBSD)? > > I can get you FreeBSD numbers tonight, I'm fairly certain it's in the > 20-30 minute range though (that system is 4 years old at this point > and doesn't exactly have the world's best disk subsystem). No need to. I was just wondering whether something was seriously wrong, but factor 2 for -j2 is still in the expected range, I suppose. This was KDEBUG=0 installation? > >PS: In case someone is looking for a (small) challenge: We still don't use > >the optimized syscall instructions for AMD CPUs. > > AMDs can't use sysenter/sysexit? At least older models don't support those. No idea whether they've added it in newer ones. Though I suspect they wouldn't have done that, since they have their own instructions (syscall/sysret), which are quite similar. You should find a "initial_commpage_syscall():..." line in the syslog, telling you what mechanism the kernel has decided to use. CU, Ingo