> On Wed, 18 Jul 2001, Mike Galbraith wrote:
>
> > You didn't paying enough attention. Marcelo is hot on the trail
> > of a problem.
>
> Looks like it indeed, however I think it's a shame
> he isn't showing us the numbers from his nice VM
> statistics patch.
MemTotal: 900012 kB
SwapTotal: 775152 kB
Running "fillmem 1024".
Note that in general, the DMA zone is under high shortage while the kernel
is working on the normal zone (of course, its bigger).
That behaviour changes with the zoned approach: if there is no global
shortage but zone specific only shortage the kernel _will_ do work on the
zone which needs work.
r b w swpd free buff cache si so bi bo in cs us sy id
1 0 0 426500 281628 852 432444 16 155 25 158 17 32 0 1 99
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
0 0 0 2 0 12 1
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 0 0 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 3 0 0 0 11 4 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 562 45 47 419 46 5 7
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
377 324 225 76 300 0 3 316 121
r b w swpd free buff cache si so bi bo in cs us sy id
1 0 0 335228 3056 852 341540 0 0 0 12 253 575 1 12 87
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
0 0 1 0 0 0 0
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 0 129 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 0 0 0 0 0 0 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 0 0 0 0 0 0 29
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
53 25 28 13 37 4 0 0 0
r b w swpd free buff cache si so bi bo in cs us sy id
1 0 0 509944 3056 272 510396 98 106 210 306 260 334 1 21 79
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
5 1 108 2 1 0 27
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 0 129 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 1642 0 0 0 0 1642 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 236302 17670 30 201475 16872 68 22
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
34648 33889 77114 636 33812 200 1 118400 42045
r b w swpd free buff cache si so bi bo in cs us sy id
0 1 2 471872 2544 216 462360 0 10654 2 10708 343 542 1 10 89
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
4 4 18 332 3 76 18
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 0 0 0 0 138 1642 1642
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 81667 17994 2331 41469 19618 403 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
28879 28867 92 3870 25003 6 329 16572 16491
r b w swpd free buff cache si so bi bo in cs us sy id
1 1 1 607020 2544 244 542816 34 30898 322 30926 527 7558 1 7 92
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
10 10 15 390 0 3542 151
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 0 0 0 0 3471 0 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 62712 7751 7720 38225 7996 958 3
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
25581 25441 216 6722 18837 23 777 17274 17199
Do you see a DMA free and inactive shortage (causing a lot reclaim_page()
failures (recfail field)) and the kernel aging/unmapping/laundering normal
zone pages ?
r b w swpd free buff cache si so bi bo in cs us sy id
0 3 1 610412 2544 376 504444 186 30950 1244 31064 597 6933 0 6 94
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
22 22 15 425 0 3088 331
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
1642 1642 0 0 1642 0 2974 0 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 144379 6638 9992 117916 8302 1190 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
27446 27421 13227 8025 19421 1 820 13745 542
r b w swpd free buff cache si so bi bo in cs us sy id
1 1 2 610328 2544 472 440108 228 31238 846 31298 574 9233 0 8 92
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
17 17 18 462 0 4401 238
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 0 0 0 0 4179 0 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 107342 7447 9510 79205 8364 1258 2
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
28298 28068 19713 8903 19395 1 897 19629 149
r b w swpd free buff cache si so bi bo in cs us sy id
1 0 1 610328 2556 484 433224 0 26072 8 26186 578 1604 12 2 86
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
15 15 20 0 0 391 194
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 64 0 0 0 379 64 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 35576 7482 6884 14220 6866 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
19709 19653 19544 7007 12702 0 0 19518 30
r b w swpd free buff cache si so bi bo in cs us sy id
0 1 1 610332 2672 508 432924 0 4216 42 4222 326 738 10 3 87
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
5 5 7 0 0 23 90
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
1642 423 1219 0 1642 0 21 0 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 19051 1191 1491 12808 1255 2319 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
10232 6463 8453 3252 6981 0 0 4685 2
r b w swpd free buff cache si so bi bo in cs us sy id
0 2 1 745672 2548 328 569368 558 1934 564 1976 226 259 2 14 84
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
12 12 98 0 0 2 187
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
4925 4502 2129 0 4925 0 2 3347 1642
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 9070 2628 1105 4375 759 16 125
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
144232 106821 120225 3703 140524 5 0 134754 51940
r b w swpd free buff cache si so bi bo in cs us sy id
0 2 1 745676 2544 360 568628 1264 3630 1730 3692 234 608 1 1 99
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
7 7 2 0 0 305 118
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 0 0 0 0 199 0 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 40894 919 1454 37376 1056 0 1488
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
6194 6083 131 2106 4088 0 0 1691 1672
r b w swpd free buff cache si so bi bo in cs us sy id
0 1 1 745664 2548 348 568640 1064 4150 1068 4152 208 358 0 0 100
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
1 1 1 0 0 165 9
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 0 0 0 0 97 0 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 5250 929 1083 2182 1055 0 3506
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
4005 4001 12 912 3094 0 0 12 5
r b w swpd free buff cache si so bi bo in cs us sy id
0 2 1 745664 2544 348 568644 1250 3838 1250 3838 194 426 0 0 100
launder launder_w ref_inact alloc_r kswapd_w krec_w kflush_w
0 0 0 0 0 197 0
Zone fshort ishort scan clean skipl skipd launder react rescue
DMA 1 257 0 0 0 0 0 0 0
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 0 0 0 0 109 0 0
Zone fshort ishort scan clean skipl skipd launder react rescue
Normal 0 0 1919 8 952 0 967 0 494
agescan agedown ageup deact deactf_age deactf_ref recfail ptes pteu
0 0 0 0 0 0 0 0 0
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