[jira] (STORM-2333) CGroup Metrics

[Robert Joseph Evans (JIRA)]

Title: Message Title

Robert Joseph Evans created an issue   Apache Storm / STORM-2333 CGroup Metrics Issue Type: Improvement Assignee: Robert Joseph Evans Components: storm-core Created: 30/Jan/17 20:14 Priority: Major Reporter: Robert Joseph Evans Now that we have isolation through cgroups it would be really nice if we could also do some monitoring of various usage metrics from the cgroups. For the most part this looks like reading some special files if they exist. We should be able to read /proc/self/cgroup to see which cgroup we are a part of (or if we are in a CGroup). And then read in the config about where the CGroup is mounted storm.cgroup.hierarchy.dir After that we can read https://lwn.net/Articles/529927/ memory.usage_in_bytes - current usage in bytes memory.limit_in_bytes - current limit in bytes https://kernel.googlesource.com/pub/scm/linux/kernel/git/glommer/memcg/+/cpu_stat/Documentation/cgroups/cpu.txt cpuacct.usage - The aggregate CPU time, in nanoseconds, consumed by all tasks in this group. OR cpuacct.stat - aggregate user and system time consumed by tasks in this group. The format is user: x system: y NOTE: cpuacct does not need to be mounted for cgroup support to work, so if those files don't exist don't register the metric (or just don't report anything). Add Comment   This message was sent by Atlassian JIRA (v6.3.15#6346-sha1:dbc023d)