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ebpf plugin clarifications

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Alfonso Acosta
2016-04-19 15:33:26 -04:00
parent 80535f8e8e
commit b745411ce1
1 changed files with 2 additions and 2 deletions
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4
examples/plugins/README.md
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@@ -10,8 +10,8 @@ directory. We currently provide two examples:
* A
[Python plugin](https://github.com/weaveworks/scope/tree/master/examples/plugins/http-requests)
using [bcc](http://iovisor.github.io/bcc/) to extract incoming HTTP request
rates per process, without any application-level instrumentation requirements.
**Note:** This plugin needs a kernel version 4.3+. It will not compile on current [dlite](https://github.com/nlf/dlite) and boot2docker hosts.
rates per process, without any application-level instrumentation requirements and negligible performance toll (metrics are obtained in-kernel without any packet copying to userspace).
**Note:** This plugin needs a [recent kernel version with ebpf support](https://github.com/iovisor/bcc/blob/master/INSTALL.md#kernel-configuration). It will not compile on current [dlite](https://github.com/nlf/dlite) and boot2docker hosts.
* A
[Go plugin](https://github.com/weaveworks/scope/tree/master/examples/plugins/iovisor),
using [iostat](https://en.wikipedia.org/wiki/Iostat) to provide host-level CPU IO wait