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Ran 07 Aug 2017 03:45AM UTC

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Committed 07 Aug 2017 03:09AM UTC coverage: 59.974%. First build

Job # GOOGLE_APPLICATION_CREDENTIALS=/tmp/gcloud-GopherCI-dev.json

Build Type

push

travis-ci

Committed by

bradleyfalzon

Commit Message

Use ulimit to limit the maximum memory a tool can use

Previously any tool running could consume all available RAM
and swap causing availability issues if the offending process
isn't terminated quickly.

This change adds a configuration parameter to limit the amount
of RAM a process can use. If it exceeds this limit, the process
is terminated, but other processes can continue.

Although we have a Filesystem analyser, which can only limit
memory usage via ulimit, the Docker analyser also uses this
mechanism because Docker's own memory limit will terminate the
container, not just the offending process. I.e. the limit cannot
be applied to our exec instance, only when we've created the
container.

We're also required to run the ulimit command each time, because
each tool is executed with a new shell, which won't inherit the
limits put in place by previous commands.

Fixes #106.

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