Look at the special programming languages SystemTap and Berkeley Packet Filter that can be used to get detailed performance information.
- [Kevin] The command for SystemTap is stap.…SystemTap are scripts in the SystemTap language,…and they interact with the kernel…to get information or change some things.…SystemTap's been around for a while,…and there's quite a few examples,…and they could be kind of handy,…so there's actually some stap utilities…that you can run to get some good kernel information.…You want to install, on most distros,…the systemtap-client package.…
And then, that puts a lot of these examples,…which are actually useful utilities…as well as examples that you could use…to make your new own SystemTap programs.…So look in /usr/share/systemtap/examples.…So let's look at using SystemTap.…So that should be available for your distro.…Just install the packages…and get that to work with just an ordinary distro.…It's a little bit of work to get the stuff installed.…
You typically got to install the kernel headers…to develop with version of the kernel package,…maybe the debug info of the kernel package.…But once it's all installed,…the SystemTap utilities should work.…
Author
Released
2/15/2018- Timing techniques
- Packages for performance
- Identifying and optimizing CPU bottlenecks
- Finding memory bottlenecks
- Diagnosing disk bottlenecks
Skill Level Advanced
Duration
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Introduction
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Welcome32s
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1. Performance Overview
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Timing techniques14m 16s
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Timing techniques solution3m 21s
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The proc filesystem7m 58s
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Packages for performance6m 8s
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Performance Co-Pilot and Tuna10m 23s
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2. CPU Bottlenecks
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top for CPU usage1m 43s
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sar for CPU2m 59s
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/proc/cpuinfo2m 18s
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Throughput vs. response time4m 17s
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3. Memory Bottlenecks
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What is a memory leak?6m 53s
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CPU caches and page caches12m 43s
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Page sizes and page faults11m 17s
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4. Disk Bottlenecks
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Hard disks and SSD behavior7m 21s
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Filesystem types and performance10m 16s
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Solution: Disk bottlenecks3m 49s
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Conclusion
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Next steps40s
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Video: SystemTap and Berkeley Packet Filter