Messages in this thread | | | Date | Fri, 10 Oct 2003 02:11:34 -0700 | From | William Lee Irwin III <> | Subject | Re: [2.7 "thoughts"] V0.3 |
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On Fri, Oct 10, 2003 at 09:54:12AM +0200, Frederick, Fabian wrote: > 2.7 "thoughts" > Thanks to Gabor, Stuart, Stephan and others > Don't hesitate to send me more or comment.
Ugh, this is all crackpot wishlist gunk.
How about some goodies backed with real working code, like:
* O(1) proc_pid_statm() -- originally by bcrl for 2.4, fwd port maintained by wli * O(lg(n)) proc_pid_readdir()/proc_task_readdir() -- original O(1) proc_pid_readdir() by manfred, rewritten by -- wli to use rbtrees for O(lg(n)) seeks into the relevant -- lists (walking over empty buckets had overhead) * 4KB ia32 kernel stacks + irqstacks -- original by bcrl, fwd port maintained by dhansen for a -- substantial amount of time, now maintained by wli * ia32 leaf pagetable node cache -- wli * node-local per_cpu areas for ia32 NUMA -- wli * highpmd, analogue of highpte for pmd's -- wli. Gets pmd's on node-local mem on ia32 NUMA, and -- alleviates a lot of lowmem pressure under heavy -- multiprogramming levels on PAE.
Some benchmarks of a patchset including these (and several other things) are at http://home.earthlink.net/~rwhron/kernel/wli.html, and some ports of the patch set are at ftp://ftp.kernel.org/people/wli/kernels/
Whatever fantasy may be worth, working code is worth a lot more. I'll refrain from mentioning prototype-quality patches I'm hacking on atm.
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