From: davidsen@tmr.com (bill davidsen) To: linux-kernel@vger.kernel.org Subject: Re: [uClinux-dev] Kernel 2.6 size increase - get_current()? Date: 25 Jul 2003 18:36:08 GMT [thread overview] Message-ID: <bfrtao$u3$1@gatekeeper.tmr.com> (raw) In-Reply-To: <3F1F9531.2050204@softhome.net> In article <3F1F9531.2050204@softhome.net>, Ihar \"Philips\" Filipau <filia@softhome.net> wrote: | Just curious. | | Is there any way to guess inline from inline? | | I mean 'inline' which means 'this has to be inlined or it will | break' and 'inline' which means 'inline this please - it adds only 10k | of code bloat and improve performance in my suppa-puppa-bench by 0.000001%!' | | Strictly speaking - separate 'inline' to 'require_inline' and | 'better_inline'. | So people who really care about image size - can turn | 'better_inline' into void, without harm to functionality. | Actually I saw real performance improvements on my Pentium MMX 133 | (it has $i16k+$d16k of caches I beleive) when I was cutting some of | inlines out. and I'm not talking about (cache poor) embedded systems... Actually you have a very diferent CPU to memory bandwidth ratio than a processor manufactured in this millenium. I use a system like that for test, but please don't optimize for it! Speculation of the day: I suspect that on some laptops which run seriously slower when on battery, the CPU/memory speed changes enough that you could see and measure better performance with a 'slow' and a 'fast' kernel. Speculation, since I'm sure the gain would be down in the noise, one of those 'difference without a distinction' things. -- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.
next prev parent reply other threads:[~2003-07-25 18:28 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <cwQJ.3BO.29@gated-at.bofh.it> [not found] ` <cypH.5dM.35@gated-at.bofh.it> [not found] ` <cyza.5lN.13@gated-at.bofh.it> [not found] ` <cArg.74D.11@gated-at.bofh.it> 2003-07-24 8:13 ` Ihar "Philips" Filipau 2003-07-25 7:25 ` Denis Vlasenko 2003-07-25 18:36 ` bill davidsen [this message] [not found] <d2nx.4QV.15@gated-at.bofh.it> [not found] ` <dbTZ.5Z5.19@gated-at.bofh.it> 2003-07-25 15:37 ` Ihar "Philips" Filipau 2003-07-24 8:27 Ihar "Philips" Filipau 2003-07-24 11:50 ` David McCullough -- strict thread matches above, loose matches on Subject: below -- 2003-07-23 18:46 Kernel 2.6 size increase Bernardo Innocenti 2003-07-23 20:22 ` [uClinux-dev] " David S. Miller 2003-07-23 20:27 ` Christoph Hellwig 2003-07-23 22:35 ` [uClinux-dev] Kernel 2.6 size increase - get_current()? Bernardo Innocenti 2003-07-23 22:37 ` Alan Cox 2003-07-23 23:00 ` Bernardo Innocenti 2003-07-24 5:06 ` David McCullough 2003-07-24 11:28 ` Alan Cox 2003-07-24 12:04 ` David McCullough 2003-07-24 14:48 ` Alan Cox 2003-07-25 18:25 ` bill davidsen 2003-07-24 15:30 ` Hollis Blanchard 2003-07-24 19:37 ` Alan Cox 2003-07-24 19:51 ` Hollis Blanchard 2003-07-24 21:20 ` J.A. Magallon 2003-07-25 4:22 ` Otto Solares 2003-07-25 14:38 ` Hollis Blanchard
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