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Groups > linux.debian.kernel > #60070
| Path | csiph.com!aioe.org!bofh.it!news.nic.it!robomod |
|---|---|
| From | Ryan Thoryk <ryan@thoryk.com> |
| Newsgroups | linux.debian.bugs.dist, linux.debian.kernel |
| Subject | Bug#888465: CPU usage reporting issues |
| Date | Fri, 26 Jan 2018 00:30:02 +0100 |
| Message-ID | <vbZ7Y-3UM-9@gated-at.bofh.it> (permalink) |
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| X-Debian-Pr-Message | report 888465 |
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| X-Original-Date | Thu, 25 Jan 2018 17:20:05 -0600 |
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Package: linux-image-4.9.0-5-amd64 Version: 4.9.65-3+deb9u2 Severity: normal Hi, I'm having an issue with CPU usage reporting, tested on kernels 4.9.0-3 and 4.9.0-5. The machines are running on Amazon EC2, which could be related. With the "sar" utility, after some time, the system's "steal" value periodically is 100%, and the normal CPU user/system values, including idle, are always 0. When running a cpu-intensive app and using the "top" utility, the user and system values are always 0, the "idle" field stays at 100%, and only the "wait" field increases. The attached file shows the "sar" output around the time the issue started. This has happened on 2 separate machines (started at different times on each), and a reboot appears to (temporarily) fix the issue. I'm wondering if anyone else has this issue, and if it could be something to do with the hypervisor. -- Ryan Thoryk ryan@thoryk.com ryan@tliquest.net
Back to linux.debian.kernel | Previous | Next — Next in thread | Find similar | Unroll thread
Bug#888465: CPU usage reporting issues Ryan Thoryk <ryan@thoryk.com> - 2018-01-26 00:30 +0100
Bug#888465: Additional example Ryan Thoryk <ryan@thoryk.com> - 2018-01-26 00:50 +0100
Bug#888465: CPU usage reporting issues Hans van Kranenburg <hans@knorrie.org> - 2018-01-26 01:00 +0100
Bug#888465: CPU usage reporting issues Ryan Thoryk <ryan@thoryk.com> - 2018-01-26 01:20 +0100
Bug#888465: CPU usage reporting issues Ryan Thoryk <ryan@thoryk.com> - 2018-01-26 01:20 +0100
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