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After a deeper analysis, it was found that multithreaded cache flush is not required. Only gathering the pages and then doing cache flush is enough to get the perf improvement, the cache flush time of each page is almost half in this case as compared with not gathering the pages. So it means there is continuous cache eviction is happening. So, while allocating big pages from allocator, instead of allocating one big page and flushing it, allocate all required big pages and then flush pages at last. Bug 4628529 Change-Id: I4d8113010a8c82a1cab124e26b14e8a3f5791cd1 Signed-off-by: Ketan Patil <ketanp@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3325002 Reviewed-by: Pritesh Raithatha <praithatha@nvidia.com> GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com> Reviewed-by: Ajay Nandakumar Mannargudi <anandakumarm@nvidia.com>