Linux Piter 2015 / Dmitry Samsonov: "Memory and network stack tuning in Linux: the story of highly loaded servers mi... / Saint Petersburg, Russia / 21 November 2015

Dmitry Samsonov: "Memory and network stack tuning in Linux: the story of highly loaded servers migration to fresh Linux distribution"

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Memory and network stack tuning in Linux: the story of highly loaded servers migration to fresh Linux distribution

During migration of highly loaded video distribution servers (40Gbit/s from every server) from old OpenSuSE 10.2 to new CentOS 7 (time between releases – 7 years) we have faced a number of problems – unexplainable swapping and OOM killer, uneven CPU core load, broken pipes, system CPU time spikes.
In the report, it will be told how did we cope with those problems and which technologies were used.

Dmitry Samsonov​
Latvia. Riga
Leading system administrator
Odnoklassniki

Leading system administrator in social network “Odnoklassniki”
In ”Odnoklassniki” I participate in introduction of CFEngine, migration from OpenSuSE 10.2 to CentOS 7 and launch of new monitoring system based on Zabbix.

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