From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 19 Apr 2001 18:56:16 +0200 (MEST) From: Simon Derr Subject: Re: Want to allocate almost all the memory with no swap In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Simon Derr Cc: linux-mm@kvack.org List-ID: On Thu, 19 Apr 2001, Simon Derr wrote: > If I ask much less memory it works.. but has no interest. > > In fact I a call mlockall() _before_ doing my big malloc, it works even > when I ask 240 megs, but: > -Under 2.2.17, quickly the kernel kills my process > -Under 2.4.2, kswapd again eats the CPU: > > Mem: 254692K av, 252868K used, 1824K free, 0K shrd, 88K buff > Swap: 313256K av, 5476K used, 307780K free 4204K cached > > PID USER PRI NI SIZE RSS SHARE STAT LIB %CPU %MEM TIME COMMAND > 3 root 14 0 0 0 0 RW 0 47.4 0.0 20:50 kswapd > 1277 root 14 0 241M 241M 968 R 0 46.8 96.8 0:12 loop > 5 root 9 0 0 0 0 SW 0 5.3 0.0 0:23 bdflush > 1278 root 10 0 468 404 404 R 0 0.3 0.1 0:00 top > Actually this is what happens under 2.4.2 : when I launch the program, during about one minute kswapd eats 50% cpu, and bdflush takes 2-5% cpu, One minute later approx, they both stop eating the cpu and my process gets almost 100% of the cpu (a PIII 733). The same happens if I kill and launch my program a second time. Sorry for the pollution I bring to your mailing list... -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/