| kata-irc-bot | <xwlpt> I try to run the perf at the vm. One curious issue I found that | 01:02 |
|---|---|---|
| kata-irc-bot | <xwlpt> | 01:02 |
| kata-irc-bot | <xwlpt> update_cfs_group takes many cpu usage. | 01:03 |
| kata-irc-bot | <xwlpt> | 01:03 |
| kata-irc-bot | <xwlpt> The cpu usage is free. | 01:03 |
| kata-irc-bot | <xwlpt> ```bash-4.2# uname -r 4.19.86``` | 01:04 |
| kata-irc-bot | <xwlpt> The is my kernel version | 01:04 |
| kata-irc-bot | <eric.ernst> Hey @xwlpt — can you clarify what exaclty you’re profiling (from when to when) ? | 03:13 |
| kata-irc-bot | <xwlpt> Just running perf top | 03:31 |
| kata-irc-bot | <xwlpt> @eric.ernst Do you tried this before. Maybe you have more context for this. | 03:33 |
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| kata-irc-bot | <xwlpt> Hi, can someone did a perf for the qemu process? I did it, and there something wired. I’d wonder to know this is only happens at my test env, or it is common. | 13:57 |
| kata-irc-bot | <xwlpt> | 13:57 |
| kata-irc-bot | <xwlpt> | 13:58 |
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| kata-irc-bot | <eric.ernst> @xwlpt I don’t have any feedback just yet, but am interested in digging into this, and in particular I would be curious to see the same done for cloud hypervisor (@chen.bo heads up). I wonder if LiuBin’s observability PR will be helpful here, as well, to gain insights (heads up @bergwolf). | 23:03 |
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| kata-irc-bot | <chen.bo> Hi @eric.ernst @xwlpt, thanks for prompting the issues. Right, profiling and performance measurement are very interesting topics to cover for both clh and its use in kata. We definitely want to dig into more, and hopefully in the near future. We will keep you posted. | 23:37 |
| kata-irc-bot | <chen.bo> @xwlpt If you can share the steps and commands you used on profiling qemu and kata-runtime. I can do a similar experiment and provide with you a reference if that's useful to you. :slightly_smiling_face: | 23:38 |
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