RHEL Kernel Performance Optimization, Characterization ... - Red Hat
RHEL Kernel Performance Optimization, Characterization ... - Red Hat
RHEL Kernel Performance Optimization, Characterization ... - Red Hat
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PageCache/Anonymous memory splitPagecache memory is global and grows when filesystem data is accesseduntil memory is exhausted.Pagecache is freed:●●●Underlying files are deleted.Unmount of the filesystem.Kswapd reclaims pagecache pages when memory is exhausted.Anonymous memory is private and grows on user demmand●●Allocation followed by pagefault.Swapin.Anonymous memory is freed:●●Process unmaps anonymous region or exits.Kswapd reclaims anonymous pages(swapout) when memory isexhausted