On Sat, 2014-02-08 at 13:06 -0800, Andy Lutomirski wrote: > This toggles TIF_SYSCALL_AUDIT as needed when rules change instead > of leaving it set whenever rules might be set in the future. This > reduces syscall latency from >60ns to closer to 40ns on my laptop.
Al also politely reminded me it might be wise to get some perf data about where exactly we are spending out time. I don't know squat about perf, but Linus always tells me to do: perf record -g -e cycles:pp -F 25000 $YOURTEST perf report -s symbol (the "-s symbol" is so that you don't get separate data for the different processes that are part of the kernel build - you'll just want "general kernel data"), and on one of the kernel symbols just select it and do "Zoom into kernel DSO". You should see something like this: -- Linux-audit mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-audit
