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https://issues.apache.org/jira/browse/TS-3417?focusedWorklogId=30437&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-30437
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ASF GitHub Bot logged work on TS-3417:
--------------------------------------
Author: ASF GitHub Bot
Created on: 11/Oct/16 21:44
Start Date: 11/Oct/16 21:44
Worklog Time Spent: 10m
Work Description: GitHub user jrushford opened a pull request:
https://github.com/apache/trafficserver/pull/1097
Make the use of madvise() with MADV_DONTDUMP configurable.
We have seen high cpu loads and high time to serve problems in our
production platform when using madvise() with the MADV_DONTDUMP option. This
appears to be a kernel issue with madvise(). in order to avoid having to
rebuild ats, this PR uses a patch from TS-3417 to make the use of madvise()
with the MADV_DONTDUMP flag configurable.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jrushford/trafficserver TS-4957
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/trafficserver/pull/1097.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1097
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commit f1c37818622fc0fc4e05614c7f1f83a10fe8c063
Author: John J. Rushford <[email protected]>
Date: 2016-10-11T21:37:01Z
Make the use of madvise() with MADV_DONTDUMP configurable.
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Issue Time Tracking
-------------------
Worklog Id: (was: 30437)
Time Spent: 10m
Remaining Estimate: 0h
> Use madvise() with MADV_DONTDUMP option to limit core sizes
> -----------------------------------------------------------
>
> Key: TS-3417
> URL: https://issues.apache.org/jira/browse/TS-3417
> Project: Traffic Server
> Issue Type: New Feature
> Components: Core
> Reporter: Phil Sorber
> Assignee: John Rushford
> Fix For: 5.3.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When ATS crashes it often leaves behind very large core files, in the
> hundreds of gigabytes. A large percentage of these core files are useless
> data in the IO buffers. We can limit the pages that the kernel dumps with
> madvise().
> Note: This will only work on Linux 3.4+.
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