13-15 November 2018
America/Vancouver timezone

oomd: a userspace OOM killer

14 Nov 2018, 16:45
45m
Pavillion-Ballroom-AB (Sheraton Vancouver Wall Center)

Pavillion-Ballroom-AB

Sheraton Vancouver Wall Center

35
Refereed talk LPC Main Track

Speaker

Mr. Daniel Xu (Facebook)

Description

Running out of memory on a host is a particularly nasty scenario. In the Linux kernel, if memory is being overcommitted, it results in the kernel out-of-memory (OOM) killer kicking in. In this talk, Daniel Xu will cover why the Linux kernel OOM killer is surprisingly ineffective and how oomd, a newly opensourced userspace OOM killer, does a more effective and reliable job. Not only does the switch from kernel space to userspace result a more flexible solution, but it also directly translates to better resource utilization. His talk will also do a deep dive into the Linux kernel changes and improvements necessary for oomd to operate.

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Primary authors

Mr. Daniel Xu (Facebook) Mr. Tejun Heo (Facebook)

Presentation Materials

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