On Sat, 2011-03-12 at 16:37 -0800, Josh Triplett wrote: > On Sat, Mar 12, 2011 at 10:45:58PM +0000, Ben Hutchings wrote: > > On Thu, 2011-03-03 at 20:34 -0800, Josh Triplett wrote: > > > Package: linux-2.6 > > > Version: 2.6.38~rc6-1~experimental.1 > > > Severity: wishlist > > > > > > ~$ perf list | grep syscalls: > > > raw_syscalls:sys_enter [Tracepoint event] > > > raw_syscalls:sys_exit [Tracepoint event] > > > > > > Please consider enabling CONFIG_FTRACE_SYSCALLS, so perf can trace all > > > syscalls by name and decode them. > > > > This adds about 100K to the size of the kernel. I question whether this > > is worth the cost. Maybe for 64-bit architectures/flavours only? > > I don't see anywhere near that amount of overhead. I just checked, and > with current git master at least, CONFIG_FTRACE_SYSCALLS adds 30240 > bytes to the size of bzImage. It selects various other options which I don't think we have enabled. > I'd certainly consider that worth the benefit of having more of the > functionality of perf work out of the box. On a system with GBs of RAM, sure. Debian also runs on much smaller machine. Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse.
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