SSV-22756: Revert to Kmem cache for ABD chunks #88
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datacore-rm
requested review from
arun-kv,
datacore-ramya,
datacore-raju,
datacore-rrajamanickam and
datacore-senthil
datacore-rm
removed request for
arun-kv,
datacore-raju,
datacore-rrajamanickam,
datacore-senthil and
datacore-ramya
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SSV-22756: BSOD: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e) - AV_ZFSin!unknown_function (Access Violation)
Issue: The customer VM was configured with less RAM than what is recommended as per their ILDC workload. Under low memory conditions, memory allocations failed while allocating abd chunks. The windows lookasidelist cache (used for some performance improvement) does not have options to guarantee allocation success under low memory conditions. So reverting to the older kmem cache which can handle such conditions.
Fix: -
Reverting the PR (but keeping the lookasidelist code file): bcb3007
4ef2b22
Testing: -
Tested with Driver verifier.