Hi all, This is a response to a benchmark, submitted a few weeks ago, comparing kernel tracing options. http://lkml.org/lkml/2010/10/28/422
We followed the methodology described in the link bellow, but using the shellscripts posted there to reproduce autotest scripts. http://lkml.org/lkml/2010/10/28/261 We disabled the extra syscall tracing on lttng, for a fair comparison. http://lkml.org/lkml/2010/10/28/290 Average results with tracing "on": lttng: 220 ns ftrace: 260 ns perf: 740 ns E5405 system kernel 2.6.36 -lttng 0.239 + 0.19.2modules + sys_getuid tracepoint + sys_getuid probe + remove syscall_trace -ftrace and perf + sys_getuid tracepoint _______________________________________________ ltt-dev mailing list [email protected] http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
