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Thursday, May 22 • 10:30am - 11:20am
Scalability Effort for Kprobes - Masami Hiramatsu, Hitachi

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Scalability Effort for Kprobes (or how the massive multiple kprobes are handled) - The kprobes is a dynamic kernel probing mechanism for debugging/monitoring/tracing in Linux kernel. Masami Hiramatsu shows how he tried to probe all the functions in Linux kernel to sanitize bugs in kprobes, especially about what was the performance problems with massive multiple Kprobes and how it was analyzed and solved by software-implemented cache etc. By those efforts, now the Linux kernel can run with over 30,000 active probes probed on almost all kernel functions.


Masami Hiramatsu

Researcher, Hitachi Ltd.
Masami Hiramatsu is a Japanese kernel maintainer of kprobes/ftrace/perf-probe etc. He is working for Hitachi Ltd. and is a researcher in Yokohama Research Laboratory. He started working on Linux kernel with Kernel Tracing (LKST) at 2002, and joined to SystemTap development and became a kprobes maintainer. Now he is working on ftrace and perf-tools mainly for improving dynamic event tracing.

Thursday May 22, 2014 10:30am - 11:20am

Attendees (5)