Re: Fixing the vm or merging rmap into the official tree? (fwd)

Roy Sigurd Karlsbakk (roy@karlsbakk.net)
Thu, 10 Jan 2002 12:58:14 +0100 (CET)


> But you _could_ try this:
>
> --- linux-2.4.18-pre2/mm/filemap.c Mon Jan 7 16:48:03 2002
> +++ linux-akpm/mm/filemap.c Thu Jan 10 02:57:01 2002
> @@ -737,6 +737,7 @@ static int page_cache_read(struct file *
>
> if (!add_to_page_cache_unique(page, mapping, offset, hash)) {
> int error = mapping->a_ops->readpage(file, page);
> + activate_page(page);
> page_cache_release(page);
> return error;
> }

No effect.

# vmstat 2
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 99 0 0 220900 19100 592828 0 0 32628 0 642 444 0 8 92
0 99 0 0 154204 19176 657272 0 0 32256 12 653 448 0 9 90
0 99 0 0 86540 19260 722628 0 0 32720 0 643 380 0 6 93
0 99 0 0 14396 19352 784392 0 0 30924 22 607 381 0 10 90
0 99 1 0 3260 17320 793044 0 0 32238 0 653 439 0 13 87
0 99 1 0 3256 14740 791520 0 0 30336 0 665 374 0 12 88
0 99 1 0 3276 13332 780592 0 0 32934 0 658 439 0 14 85
0 99 1 868 3204 10316 779348 0 320 34094 326 681 361 0 17 83
0 99 0 868 3224 10376 779192 0 0 29722 18 619 443 0 9 91
0 99 1 912 3304 10424 775104 0 0 29356 0 633 503 0 12 88
0 99 1 912 3272 10444 775340 0 128 21394 140 546 428 0 7 92
0 99 0 912 3284 10484 774728 0 0 23020 66 567 478 0 6 93
0 99 0 912 3320 10492 774004 0 0 19178 0 517 388 0 6 94
0 99 0 912 3232 10504 773160 0 0 17396 0 478 414 0 6 94
0 99 1 912 3304 10520 771972 0 0 14148 0 464 436 0 6 94
0 99 0 912 3320 10536 770768 0 0 13884 0 476 418 0 6 94
0 99 1 912 4388 10548 768324 0 0 13894 0 493 518 0 5 95
0 99 0 912 3224 9456 765536 0 0 11834 0 470 422 0 8 92
0 99 0 912 3256 9252 763828 0 0 960 22 350 502 0 2 98
0 99 0 912 3308 9000 762228 0 0 2784 0 362 481 0 3 97
0 99 0 912 3260 8104 761396 0 0 2398 0 340 476 0 3 97
0 99 0 912 3312 7020 756728 0 0 3656 28 373 444 0 4 95
0 99 0 912 3220 6924 755032 0 0 962 0 343 498 0 3 97
0 99 0 912 3224 6824 753224 0 0 964 0 343 503 0 2 98

> Or you could help me reproduce it.

I don't understand anything... The only way I can avoid it is with the
rmap patch.

--
Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA

Computers are like air conditioners. They stop working when you open Windows.

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