Messages in this thread | | | Subject | Re: Efficient Use of the Page Cache with 64 KB Pages | From | Peter Zijlstra <> | Date | Fri, 15 Sep 2006 11:11:28 +0200 |
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On Fri, 2006-09-15 at 01:50 -0700, Sandeep Kumar wrote: > Hey all, > I am a newbie and I just read a document with the idea for changes in > page cache management for 64 Bit machines. This has been taken from > Linux symposium 2006, ottawa. > > In order for 64-bit processors to efficiently use large address spaces > while maintaining lower TLB miss rates, the Linux kernel can be > configured with base page sizes up to 64 KB. While this benefits > access to large memory segments and files, it greatly reduces the > number of smaller files that can be resident in memory at one time. > The idea proposes a change to the Linux kernel to allow file data to > be more efficiently stored in memory when the size of the file, or the > data at the end of a file, is significantly smaller than the page > size. > > So, how far is this feature feasible for the linux main line kernel ?
Not in the form last presented, but Dave is still working on making it look pretty and covering more use-cases AFAIK.
But even then, it will not fix all scenarios...
> Is, this feature already supported ?
No it is not.
In future it would be nice to add the author(s) to the CC list ;-)
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