Feature: add heap details to system info and prometheus #595
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this change adds the values of ESP.gteMaxAllocHeap() and ESP.getMinFreeHead() to the prometheus metrics and the system information object. the web UI uses these values to diplay the size of the largest free contiguous block, calculate a rough estimate for the level of fragmentation, and the maximum usage of heap memory since boot in absolute and relative amounts.
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I like that. With v24.1.4 tbnobody also logged all unsuccessful DynamicJsonDocument allocations. I'm actual merging the code |
helgeerbe
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Jan 16, 2024
this change adds the values of ESP.gteMaxAllocHeap() and ESP.getMinFreeHead() to the prometheus metrics and the system information object. the web UI uses these values to diplay the size of the largest free contiguous block, calculate a rough estimate for the level of fragmentation, and the maximum usage of heap memory since boot in absolute and relative amounts.
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This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new discussion or issue for related concerns. |
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this change adds the values of ESP.gteMaxAllocHeap() and ESP.getMinFreeHead() to the prometheus metrics and the system information object. the web UI uses these values to diplay the size of the largest free contiguous block, calculate a rough estimate for the level of fragmentation, and the maximum usage of heap memory since boot in absolute and relative amounts.
the last card in this screenshot is new:
now let's observe if memory fragmentation is indeed an issue in this project.
notice that we will still miss the case where two processes (not TaskScheduler tasks) are both trying to allocate more than 50% of the largest free block.