| To: | performancecopilot/pcp <pcp@xxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [performancecopilot/pcp] pmcd causes complete system lockup on CentOS 7 on VMware (#107) |
| From: | Jeff White <notifications@xxxxxxxxxx> |
| Date: | Tue, 16 Aug 2016 11:46:28 -0700 |
| Delivered-to: | pcp@xxxxxxxxxxx |
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| Reply-to: | performancecopilot/pcp <reply+00bd08b63c751db6908ca4d8a44dd0dd061e0905123ff01592cf0000000113cb218492a169ce0a350886@xxxxxxxxxxxxxxxx> |
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@natoscott, hardware issue is unlikely as we're talking about VMs hanging when pmcd runs and numerous physical machines exhibiting off behavior like hanging on shutdown. I agree on the kernel being a likely source of the problem as this is indeed a kernel crash. pmcd is somehow triggering it. After much fighting I have been able to get kdump working and I have crash dumps of the problem. One of them is here: https://drive.google.com/open?id=0B6emnuNXtougZmhGSWhrS2ZJZVU I also have this poorly made screencast demonstrating the behavior by simply starting pmcd: I'm not much of a kernel engineer so I'm of limited help at this point. — |
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