SSV-25461 High latency after restart due to ZFSin#110
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datacore-PankajSharma wants to merge 13 commits intodatacore-windowsfrom
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SSV-25461 High latency after restart due to ZFSin#110datacore-PankajSharma wants to merge 13 commits intodatacore-windowsfrom
datacore-PankajSharma wants to merge 13 commits intodatacore-windowsfrom
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…er (#101) * Create MSVC-specific wrapper library for reading CR8 register Added a new C file that defines read_cr8_msvc(), which wraps the MSVC intrinsic __readcr8() to read the CR8 register, since Clang and GCC do not provide __readcr8(). This function is now compiled into a separate library spl_cr_wrappers, allowing Clang projects to call read_cr8_msvc() without directly depending on MSVC-specific intrinsics in Clang code.
Registry 'zfs_abd_prealloc_percent' can be used to set the percent of prealloc wrt zfs_arc_max
…oc_percent Setting zfs_prealloc_percent=0 will disable the prealloc feature
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Motivation and Context
Description
We have added three key changes for this bug first one is prealloc thread which allocates memory upto zfs_arc_max and prewarm the kmem cache, Second is redefining the memory available byte and manual pressure logic and third is adding dynamic dirty data max logic for stable throughput.
How Has This Been Tested?
The change was manually tested using FIO with 1mb block size for latency and parallel vdbench threads for stable throughput
Types of changes
Checklist:
Signed-off-by.