Can I accumulate/get/read IOMMU IOTLB stats? #267
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opcm
pearls-of-agrippa
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I am investigating an issue where the IOMMU may be getting pushed into a corner by the host page size that is in use. Is there a way to monitor/examine IOMMU things like IOTLB using this tool suite? |
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Answered by
opcm
Jan 26, 2021
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pcm-iio monitors IO TLB hits and misses: see pcm-iio event descriptions: https://github.com/opcm/pcm/blob/0a178ec2573821e3c08beb6bd76808ebb912bc76/opCode.txt#L20 https://github.com/opcm/pcm/blob/0a178ec2573821e3c08beb6bd76808ebb912bc76/opCode.txt#L21 |
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pcm-iio monitors IO TLB hits and misses:
see pcm-iio event descriptions:
https://github.com/opcm/pcm/blob/0a178ec2573821e3c08beb6bd76808ebb912bc76/opCode.txt#L20
https://github.com/opcm/pcm/blob/0a178ec2573821e3c08beb6bd76808ebb912bc76/opCode.txt#L21