Messages in this thread | | | From | (Ramakrishna K) | Subject | Re: Sharing page tables for shared memory | Date | Wed, 16 Dec 1998 09:45:37 -0500 (GMT) |
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> > On Mon, Dec 14, 1998 at 05:01:58PM +0530, Muthu wrote: > > > Is creating Shared memory of greater or closer to 4MB creates page table > > entries in all processes sharing it? > > > > I think, it will be good to allocate a single page-table and share it > > across process than creating 1024 PTE's in all processes sharing it. Is this > > taken care in 2.1.x kernel? > > I can well imagine why Oracle is interested in this - many DB setups I've > seen use hundreds of megabytes, if not a gigabyte shared memory. That way > our current way of having completly distinct page tables per mm is wasting > large amounts for Oracle, Sybase & Co.
Count another database Teradata too. It does use memory ( shared ) running into almost Gb.
RK.
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