On Tue, Jun 26, 2007 at 10:14:40AM -0700, Andrew Morton wrote: > On my machine, time(2) doesn't do any syscall at all - it uses the vsyscall > page. I'd be surprised if a database uses sys_time() either.
Large boxes unfortunately can't always use vsyscalls... that's a real pity. I also had to disable the vsyscalls64 to generate some number. I think there shall be a perfectly accurate but not monotone mode for gettimeofday so we can enable rdtscp (via sysctl or/and prctl). Aware apps can enable the prctl, aware or brave admins can turn on the sysctl. Vojtech and others should have proper patches to merge for this. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
