Messages in this thread | | | From | Markus Stockhausen <> | Subject | AW: [PATCH 0/4] Add AVX512 optimized gen_syndrome and recovery functions | Date | Wed, 3 Aug 2016 05:44:03 +0000 |
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> Von: linux-raid-owner@vger.kernel.org [linux-raid-owner@vger.kernel.org]" im Auftrag von "Gayatri Kammela [gayatri.kammela@intel.com] > Gesendet: Mittwoch, 3. August 2016 01:28 > An: linux-raid@vger.kernel.org > Cc: shli@kernel.org; linux-kernel@vger.kernel.org; hpa@zytor.com; james.t.kukunas@linux.intel.com; fenghua.yu@intel.com; megha.dey@linux.intel.com; ravi.v.shankar@intel.com; Gayatri Kammela > Betreff: [PATCH 0/4] Add AVX512 optimized gen_syndrome and recovery functions > > This is the patch set for adding AVX512 optimized gen_syndrome > and recovery functions. > > Optimization of RAID6 using AVX512 instructions should improve the > RAID6 performance.These patches are tested and observed the improvement > in performance.
Hi Gayatri,
as you already implemented the gen_syndrome() functions it should be a piece of cake to add the xor_syndrome() ones. Only if these are implemented we can make use of Read-Modify-Write operations if the kernel chooses an processor optimized algorithm. They are already in the SSE2 path but are still missing from the current AVX2 implementation.
More infos here:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fe5cbc6e06c7d8b3a86f6f5491d74766bb5c2827 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a582564b24bec0443b5c5ff43ee6d1258f8bd658 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e833e697bcf4c2f3f7fb9fce39d08cd4439e5d7
It would give the final touch to the patches.
Best regards.
Markus
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