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<p><b style="font-size: 11pt; font-family: Calibri, sans-serif;">От:</b><span style="font-size: 11pt; font-family: Calibri, sans-serif;"> Aleksander Aleksandrov</span><br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>Отправлено:</b> 12 марта 2020 г. 14:36<br>
<b>Кому:</b> jeremie.galarneau@efficios.com<br>
<b>Копия:</b> simon.marchi@efficios.com; francis.deslauriers@efficios.com<br>
<b>Тема:</b> Babeltrace 2.0.2 performance issue</font>
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<p style="margin-right:0px; margin-left:0px; font-size:12px; line-height:normal; font-family:"Helvetica Neue"">
Hello Jérémie,</p>
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My name is Aleksandr, I had a pleasure to write a plugin for babeltrace2 and I faced some performance issue (bt2 vs bt1).</p>
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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.</p>
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Babeltrace 2: </li></ul>
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tag: v2.0.2</p>
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BABELTRACE_MINIMAL_LOG_LEVEL=INFO ./configure --disable-man-pages --disable-debug-info CFLAGS='-O3 -DNDEBUG -Wno-error'</p>
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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</p>
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Babeltrace 1: </li></ul>
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tag: v1.5.8</p>
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./configure CFLAGS='-O3 -DNDEBUG -Wno-error'</p>
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./converter/babeltrace my-lttng-trace -o dummy 8,30s user 0,03s system 100% cpu 8,334 total</p>
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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.</p>
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I would be happy to receive any help or clarification from you.<br>
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Thank you for your time!</p>
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Best regards,</p>
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Aleksandr</p>
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