WebThis patch marks the page PageReclaim similar to deactivate_page() so that the page gets reclaimed almost immediately after the page gets cleaned. This is to avoid reclaiming clean pages that are younger than a dirty page encountered at the end of the LRU that might have been something like a use-once page. WebOn Thu 25-06-20 12:31:18, Matthew Wilcox wrote: > Since XFS needs to pretend to be kswapd in some of its worker threads, > create methods to save & restore kswapd state. Don't bother restoring > kswapd state in kswapd -- the only time we reach this code is when we're > exiting and the task_struct is about to be destroyed anyway. > > Signed-off …
Борьба с фрагментацией памяти в ядре Linux / Хабр
Web24 mrt. 2024 · 1. 前言. 本专题我们开始学习内存管理部分，本文为页面回收处理相关学习笔记。本文主要参考了《奔跑吧, Linux内核》、ULA、ULK的相关内容。. 上节重要介绍 … WebThe investigation > noted that there was a need to rationalise kswapd decisions to reclaim > with kswapd decisions to sleep. With this patch on a 2-socket box, there > was a 49% reduction in direct reclaim scanning. > > However, … names of hosea children
内存管理基础学习笔记 - 5.2 页面回收 - kswapd-爱代码爱编程
WebUsually, slab shrinker is invoked on kswapd context which gfp_mask is always GFP_KERNEL, so only lowmem pages are released on kswapd context. This means that highmem pages in the pool are never reclaimed until direct reclaim occurs. This can be problematic when the page pool holds excessive amounts of highmem. WebOn 03/12/2024 01:00 AM, David Rientjes wrote: > Kswapd will not wakeup if per-zone watermarks are not failing or if too > many previous attempts at background reclaim have failed. > > This can be true if there is a lot of free memory available. For high- > order allocations, kswapd is responsible for waking up kcompactd for > background compaction. WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed From: Mel Gorman To: Johannes Weiner Cc: Andrew Morton , Rik van Riel , Andrea Arcangeli , Zlatko Calusic , Minchan Kim … megabon cinnabon