Messages in this thread | | | From | "YoshiyaETO" <> | Subject | Re: cache limit | Date | Thu, 28 Aug 2003 01:02:45 +0900 |
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> On Wed, 27 Aug 2003 02:45:12 -0700, William Lee Irwin III wrote: > >> How do you know it would be effective? Have you written a patch to > >> limit it in some way and tried running it? > > On Wed, Aug 27, 2003 at 08:14:12PM +0900, Takao Indoh wrote: > > It's just my guess. You mean that "index cache" is on the pagecache? > > "index cache" is allocated in the user space by malloc, > > so I think it is not on the pagecache. > > That will be in the pagecache.
No. DBMS usually uses DIRECTIO that bypass the pagecache. So, "index caches" in the DBMS user space will not be in pagecache.
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