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SubjectRe: Linux 2.4.5-ac15
On Sun, 17 Jun 2001, Walter Hofmann wrote:

> I had already two crashes with ac15. The system was still ping-able, but
> login over the network didn't work anymore.
>
> The first crash happened after I started xosview and noticed that the
> system almost used up the swap (for no apparent reason). The second
> crash happened shortly after I started fsck on a crypto-loop device.
>
> This does not happen with ac14, even under heavy load.
>
> I noticed a second problem: Sometimes the system hangs completely for
> approximately ten seconds, but continues just fine after that. I have
> seen this with ac14 and ac15, but not with ac12.

FWIW, here is the vmstat output for the second (short) hang. Taken with
ac14, vmstat 1 was started (long) before the hang and interrupted about
five seconds after it. The machine has 128MB RAM and 256MB swap.


procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
1 1 0 77332 1584 15632 67740 44 0 448 0 496 932 84 15 1
1 2 0 77456 1848 15944 66960 0 0 372 724 625 2296 62 20 18
3 0 1 77456 1780 16208 67044 72 0 336 80 584 1695 20 20 61
2 0 0 77404 1464 16672 66652 0 0 572 0 530 2649 26 19 55
3 1 0 77344 1464 17000 66480 124 0 656 0 419 879 12 16 72
0 3 0 77344 1468 17076 66388 184 0 1080 0 561 654 8 8 84
0 5 0 77892 1464 17184 66892 176 128 800 396 415 1050 14 11 74
0 5 0 77892 1600 17216 66868 16 0 68 1020 508 295 5 5 90
0 3 0 77892 1464 17316 66784 56 0 372 68 464 1287 22 14 64
2 3 0 77892 1464 17524 66828 76 0 440 0 398 987 8 12 79
1 3 0 77892 1464 17780 66680 32 0 512 0 367 1061 10 10 79
1 1 0 77880 1464 18020 66392 224 0 756 0 394 1579 43 12 44
2 1 0 77784 2172 18324 64820 16 0 992 0 529 1745 37 19 44
0 4 0 77936 1848 18428 65180 124 0 252 920 570 451 23 9 69
0 2 0 77888 1680 18564 65656 84 0 744 0 532 721 21 12 67
3 0 0 77876 1464 18700 65564 4 0 1176 0 487 804 26 16 58
0 3 1 77496 1468 18712 65700 424 100 1296 384 401 532 70 10 20
2 0 0 77920 1508 18804 65504 72 248 968 260 525 709 40 9 51
2 2 0 77908 1728 18788 65388 0 120 1000 568 568 608 41 8 51
0 4 0 77908 1620 18828 65548 0 0 172 356 545 420 22 8 69
1 1 0 77904 1712 18472 65464 36 0 1600 0 485 621 52 15 33
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
2 1 0 78124 1528 18496 64940 116 20 884 288 545 604 54 16 30
4 0 0 78124 1468 18548 64260 4 0 468 0 449 663 49 6 46
3 0 0 77844 3416 18492 63932 100 0 304 0 431 1915 80 16 4
1 2 0 77844 2892 18536 64204 60 0 284 820 583 917 64 13 23
1 0 0 77844 2824 18544 64236 0 0 40 68 591 550 36 6 58
3 0 0 77844 2604 18568 64372 0 0 120 0 455 474 64 13 23
1 0 0 77844 2472 18572 64440 0 0 56 0 399 617 35 9 56
1 0 0 77844 2456 18572 64460 0 0 0 0 515 721 8 6 87
0 0 0 77844 2448 18572 64468 0 0 4 0 469 655 8 8 83
1 0 0 77844 2384 18572 64528 0 0 0 428 538 641 7 10 83
0 0 0 77844 2388 18572 64528 0 0 0 0 492 733 3 9 89
0 0 0 77844 2368 18572 64548 0 0 0 0 520 804 11 7 82
0 0 0 77844 2336 18572 64580 0 0 0 0 473 680 6 6 89
1 0 0 77844 2276 18584 64608 0 0 12 0 490 966 30 13 56
2 0 0 77844 2228 18584 64648 0 0 0 344 539 589 47 7 47
3 0 0 77844 2228 18588 64692 0 0 4 0 381 455 29 11 60
2 0 1 77844 2180 18588 64700 0 0 0 0 453 781 33 9 58
1 0 0 77844 2160 18604 64708 0 0 16 0 390 852 18 5 77
2 0 1 77844 1940 18616 64912 124 0 212 0 318 756 40 8 52
3 0 0 77844 1680 18620 65180 240 0 244 576 492 1632 87 13 0
2 0 1 77844 1528 18540 65540 584 0 592 0 352 2466 90 10 0
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
2 0 0 77844 1800 18516 65588 40 0 40 0 357 675 89 11 0
3 5 2 77844 1464 18536 65916 1508 44 1660 264 435 852 37 16 47
1 0 0 77844 1484 18532 65968 864 0 936 0 386 667 89 7 5
1 0 1 77844 1464 18344 66220 1328 0 1416 280 416 519 54 5 41
1 0 0 78856 1464 18236 67776 4276 104 4276 228 528 743 25 12 63
2 0 1 78820 1540 18220 67748 588 24 1148 92 507 1816 72 11 16
1 0 1 78820 1500 18216 67664 0 0 4 0 319 327 92 8 0
1 0 0 78820 1484 18216 67684 0 0 0 0 391 308 94 6 0
0 0 0 78812 1468 18196 67716 636 0 996 488 578 1106 12 13 75
0 0 0 78808 1476 18196 67712 0 0 0 0 337 399 12 10 77
0 0 0 78808 1724 18196 67736 16 0 16 0 368 517 6 8 87
0 0 0 78808 1676 18220 67760 0 0 24 0 405 475 7 6 88
1 0 0 78752 1680 18232 67832 132 0 192 0 412 457 10 11 78
0 2 0 78752 1464 18244 67884 64 0 96 620 542 3293 8 27 66
5 0 0 77888 1464 18252 68060 896 0 1516 0 519 611 39 13 48
0 0 0 77000 2416 18276 67464 600 0 1516 280 592 764 19 8 73
2 0 0 77000 2556 18296 67500 4 0 28 268 595 1789 37 10 52
3 0 0 77000 1632 18320 67848 188 0 344 128 561 848 30 11 59
2 2 1 77000 1464 18404 67688 0 0 228 412 542 2434 42 18 39
1 0 0 77000 1464 18444 67324 8 0 152 224 386 1345 26 19 55
2 4 2 77084 1524 18396 66904 0 1876 108 2220 2464 66079 1 98 1
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 1 0 77076 1608 18500 66452 0 0 456 200 493 1175 21 11 68
1 0 0 77108 1464 18512 66124 0 0 688 0 286 509 10 6 85
1 0 0 77292 1464 17740 66600 0 472 3580 580 463 872 43 16 41
2 0 0 77424 1464 17568 66988 40 288 1604 508 539 1289 38 13 49
2 0 1 77448 2520 15880 67100 88 164 3696 304 495 2258 60 21 19
1 1 0 77516 1464 15500 68396 200 0 2516 204 573 583 24 12 64
1 2 0 77608 1692 15268 68844 672 0 2252 0 543 572 14 9 77
0 2 0 77944 1464 15080 69584 532 0 1568 0 488 492 5 5 91
0 0 0 78444 1544 15032 70028 156 0 340 0 468 512 11 8 81
0 0 0 78444 1524 15032 70048 0 0 0 0 445 452 4 5 91
0 0 0 78444 1464 15028 70112 24 0 36 404 502 420 3 10 87
0 0 0 78444 1464 15028 70096 0 0 0 0 439 487 2 6 92
0 0 0 78444 1464 15032 70100 0 0 4 0 441 488 6 4 90


Walter
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