From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 28 Oct 2001 09:34:31 -0800 (PST) From: Linus Torvalds Subject: Re: xmm2 - monitor Linux MM active/inactive lists graphically In-Reply-To: <87k7xfk6zd.fsf@atlas.iskon.hr> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Zlatko Calusic Cc: Jens Axboe , Marcelo Tosatti , linux-mm@kvack.org, lkml List-ID: On 28 Oct 2001, Zlatko Calusic wrote: > > But, now I found something interesting, other two disk which are on > the standard IDE controller work correctly (writing is at 17-22 > MB/sec). The disk which doesn't work well is on the HPT366 interface, > so that may be our culprit. Now I got the idea to check patches > retrogradely to see where it started behaving poorely. Ok. That _is_ indeed a big clue. Does the -ac patches have any hpt366-specific stuff? Although I suspect you're right, and that it's just the driver (or controller itself) being very very sensitive to some random alignment of stars, rather than any real code itself. > 0 2 0 13208 2924 516 450716 0 0 0 11808 179 113 0 6 93 > 0 1 0 13208 2656 524 450964 0 0 0 8432 174 86 1 6 93 > 0 1 0 13208 3676 532 449924 0 0 0 8432 174 91 1 4 95 > 0 1 0 13208 3400 540 450172 0 0 0 8432 231 343 1 4 94 > 0 2 0 13208 3520 548 450036 0 0 0 8440 180 179 2 5 93 > 0 1 0 20216 3544 728 456976 32 0 32 8432 175 94 0 4 95 > 0 2 0 20212 3280 728 457232 0 0 0 8440 174 88 0 5 95 > 0 2 0 20208 3032 728 457480 0 0 0 8364 174 84 1 4 95 > procs memory swap io system cpu > r b w swpd free buff cache si so bi bo in cs us sy id > 0 2 0 20208 3412 732 457092 0 0 0 6964 175 111 0 4 96 > 0 2 0 20208 3272 728 457224 0 0 0 1216 207 89 0 1 99 > 0 2 0 20208 3164 728 457352 0 0 0 1300 256 77 1 2 97 > 0 2 1 20208 2928 732 457604 0 0 0 1444 283 77 1 0 99 > 0 2 1 20208 2764 732 457732 0 0 0 1316 278 73 1 1 98 So it actually slows down to just 1.5MB/s at times? That's just disgusting. I wonder what the driver is doing.. Linus -- 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-mm.org/