From kde-devel  Sat Aug 20 15:06:44 2005
From: Jakub Stachowski <stachowski () hypair ! net>
Date: Sat, 20 Aug 2005 15:06:44 +0000
To: kde-devel
Subject: Re: CPU load control
Message-Id: <200508201706.44696.stachowski () hypair ! net>
X-MARC-Message: https://marc.info/?l=kde-devel&m=112455048919671

Dnia sobota, 20 sierpnia 2005 13:39, Manuel Amador napisał:
[ ... ]
> You start a background task which starts to read directories and files> (the regular activity of an indexer), even with a nice 20 level, and> pretty soon apps you wanna work with need to page their data from the> hard disk.  This is caused by two phenomenons: disk cache eviction (the> OS evicts useful files from the cache because the indexer starts to read> files, and the OS services those requests, caching stuff for the> indexer) and memory pressure (which happens because while the indexer> runs, stuff will get paged in to disk to service the memory requests> from the indexer).
You can prevent this by using fadvise() and/or madvise() to hint kernel that indexed files should not be loaded into disk and page cache.
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