Hi Rik,
I can probably give some more datapoints. Here is the console output
of my test machine (there is a 'vmstat 5' running in background):
[root@ls3016 /root]# killall shmtst
[root@ls3016 /root]#
1 12 2 0 1607668 18932 2110496 0 0 67154 1115842 1050063 2029389 0 2
98
0 10 2 0 1607564 18932 2110496 0 0 0 300 317 426 0 0 100
0 10 2 0 1607408 18932 2110496 0 0 0 301 336 473 0 0 100
0 10 2 0 1607560 18932 2110508 0 0 0 307 318 430 0 0 100
0 10 2 0 1607556 18932 2110512 0 0 0 304 324 433 0 0 100
0 10 2 0 1607528 18932 2110512 0 0 0 272 308 410 0 1 99
0 10 2 0 1607440 18932 2110516 0 0 0 315 323 438 0 1 99
0 10 2 0 1607528 18932 2110516 0 0 0 323 316 424 0 0 100
0 10 2 0 1607556 18932 2110516 0 0 0 304 309 410 0 0 100
0 10 2 0 1607600 18932 2110528 0 0 0 298 314 418 0 0 100
0 10 2 0 1607384 18932 2110528 0 0 0 296 307 406 0 1 99
0 10 2 0 1607284 18932 2110528 0 0 0 304 315 421 0 0 100
0 10 2 0 1607668 18932 2110528 0 0 0 298 304 402 0 0 100
0 10 2 0 1607576 18932 2110528 0 0 0 285 307 405 0 0 100
0 10 2 0 1607656 18932 2110528 0 0 0 292 303 399 0 1 99
0 10 2 0 1607928 18932 2110528 0 0 0 313 310 408 0 0 100
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 10 2 0 1608440 18932 2110528 0 0 0 340 313 417 0 1 99
0 10 2 0 1608260 18932 2110528 0 0 0 298 318 426 0 0 100
0 10 2 0 1608208 18932 2110528 0 0 0 314 334 448 0 1 99
0 10 2 0 1608396 18932 2110528 0 0 0 323 316 421 0 1 99
0 10 2 0 1608204 18932 2110548 0 0 0 334 333 458 0 0 100
0 10 2 0 1607888 18932 2110580 0 0 0 336 329 448 0 1 99
0 10 2 0 1608040 18932 2110584 0 0 0 317 321 435 0 0 100
0 10 2 0 1608032 18932 2110588 0 0 0 241 318 425 0 0 100
0 10 2 0 1608028 18932 2110592 0 0 0 257 325 443 0 1 99
0 10 3 0 1608028 18932 2110592 0 0 0 258 323 435 0 0 99
0 10 2 0 1608032 18932 2110592 0 0 0 241 316 425 0 0 100
0 10 2 0 1608024 18932 2110592 0 0 0 261 337 460 0 0 100
0 10 2 0 1608016 18932 2110592 0 0 0 253 328 444 0 0 100
0 10 2 0 1608024 18932 2110592 0 0 0 252 320 435 0 0 100
0 10 2 0 1608012 18932 2110592 0 0 0 255 326 446 0 0 100
0 10 2 0 1608020 18932 2110592 0 0 0 255 326 444 0 1 99
0 10 2 0 1608012 18932 2110600 0 0 0 261 341 469 0 0 100
0 10 2 0 1607992 18932 2110608 0 0 0 261 344 479 0 0 100
0 10 2 0 1607992 18932 2110612 0 0 0 264 342 471 0 0 100
0 10 2 0 1607984 18932 2110612 0 0 0 266 334 462 0 0 100
0 10 2 0 1607980 18932 2110620 0 0 0 273 340 468 0 0 99
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 10 2 0 1607972 18932 2110624 0 0 0 266 345 474 0 1 99
0 10 2 0 1607940 18932 2110640 0 0 0 256 341 462 0 0 100
0 10 2 0 1607936 18932 2110644 0 0 0 262 339 462 0 1 99
0 10 2 0 1607940 18932 2110644 0 0 0 261 333 450 0 1 99
0 10 2 0 1607944 18932 2110644 0 0 0 253 335 454 0 0 100
0 10 2 0 1607944 18932 2110644 0 0 0 272 352 479 0 1 99
[root@ls3016 /root]# ps l
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
100 0 820 1 9 0 2200 1168 wait4 S ttyS0 0:00 login -- ro
100 0 862 820 14 0 1756 976 wait4 S ttyS0 0:00 -bash
000 0 878 862 9 0 1080 360 down D ttyS0 11:27 ./shmtst 10
000 0 879 862 9 0 1080 360 down D ttyS0 15:21 ./shmtst 15
040 0 880 878 9 0 1092 416 wait_o D ttyS0 8:55 ./shmtst 10
040 0 881 878 9 0 1080 360 down D ttyS0 10:22 ./shmtst 10
444 0 882 878 9 0 0 0 do_exi Z ttyS0 10:00 [shmtst <de
040 0 883 878 9 0 1092 416 wait_o D ttyS0 9:30 ./shmtst 10
040 0 884 878 9 0 1092 416 down D ttyS0 8:44 ./shmtst 10
040 0 885 878 9 0 1092 416 down D ttyS0 9:01 ./shmtst 10
444 0 886 878 9 0 0 0 do_exi Z ttyS0 7:59 [shmtst <de
444 0 887 879 9 0 0 0 do_exi Z ttyS0 17:11 [shmtst <de
040 0 888 878 9 0 1080 360 down D ttyS0 10:21 ./shmtst 10
040 0 889 878 9 0 1092 416 down D ttyS0 9:06 ./shmtst 10
000 0 891 862 9 0 1136 488 nanosl S ttyS0 0:23 vmstat 5
000 0 1226 862 19 0 2756 1084 - R ttyS0 0:00 ps l
[root@ls3016 /root]# 0 10 2 0 1607936 18932 2110652 0 0 0 275 368
488 0 0 99
0 10 2 0 1607912 18932 2110660 0 0 0 266 334 457 0 0 100
0 10 2 0 1607848 18932 2110672 0 0 0 302 354 498 0 0 100
0 10 2 0 1607892 18932 2110688 0 0 0 287 352 496 0 0 100
0 11 2 0 1607868 18932 2110704 0 0 1 282 338 472 0 1 99
So the processes don't finish exiting at least 47*5sec. They have
shared mmaped some 666000000 bytes long plain file on a 8GB machine.
The rest of the machine behaves nicely.
Greetings
Christoph
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