How to reduce cpu usage when gc,nearly 100%

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Nov 29, 2021, 9:45:03 PM11/29/21

to golang-nuts

After running serveral of days,my program will use 100% cpu when gc，how can I fix this?

The program has millions of objects,hard to reduce.

go version

go version go1.16.3 linux/amd64

Top and perf top show that runtime gc causes high cpu usage

rule1129.heap

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Nov 29, 2021, 11:03:21 PM11/29/21

to 林圣国, golang-nuts

Please always paste plain text as plain text, not as an image. Plain text is much easier to read. Thanks.

I recommend starting with https://go.dev/blog/pprof and the description of memory profiling.

Ian

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Nov 30, 2021, 1:50:12 AM11/30/21

to golang-nuts

Sorry about that,Google folds the image and the attachment,I already profile the memory heap.

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