Can PCM moniter memory bandwidth caused by DMA? #302
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opcm
Jiangrijin
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I am looking for a tool to moniter VM's memory bandwidth. I wonder if the output of PCM includes DMA's bandwidth like network bandwidth. |
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Answered by
opcm
Jun 23, 2021
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The output from READ and WRITE columns (per-socket) includes DMA memory traffic. The LMB an RMB pcm metrics are per-core (but obviously do not contain DMA). |
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The output from READ and WRITE columns (per-socket) includes DMA memory traffic. The LMB an RMB pcm metrics are per-core (but obviously do not contain DMA).