cmd/geth: use automaxprocs to apply cpu quota correctly #27506
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Signed-off-by: jsvisa <delweng@gmail.com>
Signed-off-by: jsvisa <delweng@gmail.com>
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I've checked the dependency a bit, and it's kind of complicated for what it is. Would be nice to have a simpler solution. |
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We already have a package |
thanks for the advice, I'll try to implement it in the package |
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Actually, after checking the automaxprocs implementation a bit more, I can say we probably don't want to reimplement this. |
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@fjl please take another look, is it ready to merge? |
fjl
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DarianShawn
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Sep 3, 2023
### Description upstream PR: [go-ethereum#27506](ethereum/go-ethereum#27506) As discussed with @rjl493456442 offline, if Geth was running in a container with CPU quota(set with cgroup limiting), and runtime.NumCPU returns the host's CPU cores(maybe bigger than the docker's setting), which may result in more Golang runtime schedule and context switch. So I'm using the [uber/atomaxprocs](https://github.com/uber-go/automaxprocs) package to return the correct cpu quota.
devopsbo3
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Nov 10, 2023
It is usually best to set GOMAXPROCS to the number of available CPU cores. However, setting it like that does not work well when the process is quota-limited to a certain number of CPUs. The automaxprocs library configures GOMAXPROCS, taking such limits into account.
devopsbo3
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…reum#27506)" This reverts commit 098c798.
devopsbo3
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…reum#27506)" This reverts commit 098c798.
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As discussed with @rjl493456442 offline, if Geth was running in a container with CPU quota(set with cgroup limiting), and
runtime.NumCPUreturns the host's CPU cores(maybe bigger than the docker's setting), which may result in more Golang runtime schedule and context switch.So I'm using the uber/atomaxprocs package to return the correct cpu quota.