Messages in this thread | | | From | Jakub Jelinek <> | Subject | Re: [patch] fork() speedup, 2.1.90 | Date | Thu, 19 Mar 1998 14:29:40 +0100 (MET) |
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> > > The biggest overhead in current Linux's fork() latency is the creation > of new page tables. This patch implements 'page table caching', a way to > preserve constructed state after a process exits. Timings on a 100 MHz > P5: >
Oh no, Ingo, save yourself the work and look sometimes into vger CVS. Page table caching is implemented for all the platforms but m68k's pgd/pmd's (just pte's are cached on m68k). It is tested and hopefully should go to the mainstream during the upcoming merge. But yes, it makes a big difference.
There are some further things I want to do to speed up exit, but I'm waiting for the merge - it would be mess otherwise.
Cheers, Jakub ___________________________________________________________________ Jakub Jelinek | jj@sunsite.mff.cuni.cz | http://sunsite.mff.cuni.cz Administrator of SunSITE Czech Republic, MFF, Charles University ___________________________________________________________________ Ultralinux - first 64bit OS to take full power of the UltraSparc Linux version 2.1.89 on a sparc64 machine (498.80 BogoMips). ___________________________________________________________________
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