От: Aleksander Aleksandrov Отправлено: 12 марта 2020 г. 14:36 Кому: jeremie.galarn...@efficios.com Копия: simon.mar...@efficios.com; francis.deslauri...@efficios.com Тема: Babeltrace 2.0.2 performance issue
Hello Jeremie, My name is Aleksandr, I had a pleasure to write a plugin for babeltrace2 and I faced some performance issue (bt2 vs bt1). I attached the simple LTTng user-space log which is used to show my issue. As far as I understand Babeltrace2's performance is comparable to Babeltrace1's. * Babeltrace 2: tag: v2.0.2 BABELTRACE_MINIMAL_LOG_LEVEL=INFO ./configure --disable-man-pages --disable-debug-info CFLAGS='-O3 -DNDEBUG -Wno-error' LD_LIBRARY_PATH=./src/lib/.libs ./src/cli/.libs/babeltrace2 my-lttng-trace -o dummy 12,70s user 0,03s system 99% cpu 12,745 total * Babeltrace 1: tag: v1.5.8 ./configure CFLAGS='-O3 -DNDEBUG -Wno-error' ./converter/babeltrace my-lttng-trace -o dummy 8,30s user 0,03s system 100% cpu 8,334 total Babeltrace v2.0.2 is slower (~50%, processing time: 12,745 s vs 8,334 s) than Babeltrace v1.5.8 with a dummy output according to my measurements. I would be happy to receive any help or clarification from you. Thank you for your time! Best regards, Aleksandr
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