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2023-01-27 - 15:21

x86 Intel (undisclosed) @1600 MHz, Linux 4.9.20-rt16 (Profile)

Latency plot of system in rack #7, slot #1
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack7slot1.osadl.org (updated Fri Jan 27, 2023 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23409211654,56sleep20-21swapper/207:07:522
21338211251,21sleep10-21swapper/107:05:031
2327329869,24sleep30-21swapper/307:06:293
2326227853,20sleep00-21swapper/007:06:220
132002640,1sleep221648-21stress10:58:172
23758994715,20cyclictest0-21swapper/111:30:001
115222460,1sleep321648-21stress11:57:543
23758994514,18cyclictest0-21swapper/110:45:251
23757994510,22cyclictest0-21swapper/007:40:140
23759994313,27cyclictest0-21swapper/209:49:492
23759994313,27cyclictest0-21swapper/209:49:492
2375899436,24cyclictest0-21swapper/111:37:491
2375899436,24cyclictest0-21swapper/111:37:491
2376099423,36cyclictest0-21swapper/309:26:143
2376099423,36cyclictest0-21swapper/309:26:143
2376099423,25cyclictest2438-21sh07:30:003
23758994211,20cyclictest0-21swapper/109:30:321
23757994212,15cyclictest0-21swapper/010:30:390
2376099413,35cyclictest0-21swapper/311:40:433
2376099413,35cyclictest0-21swapper/310:55:353
2376099413,29cyclictest21648-21stress12:10:413
2376099413,26cyclictest23742-21expr08:10:193
23758994112,18cyclictest0-21swapper/109:50:051
2376099403,34cyclictest0-21swapper/311:47:443
2376099403,34cyclictest0-21swapper/311:47:443
2376099403,34cyclictest0-21swapper/311:17:483
2376099402,24cyclictest21651-21stress09:21:193
23759994014,23cyclictest0-21swapper/211:01:422
23759994010,27cyclictest0-21swapper/209:31:222
23759994010,19cyclictest0-21swapper/210:13:332
23758994010,19cyclictest0-21swapper/109:35:301
2375799406,20cyclictest0-21swapper/012:10:150
23757994017,21cyclictest0-21swapper/008:05:100
23757994011,26cyclictest0-21swapper/009:30:130
23757994011,26cyclictest0-21swapper/009:30:010
23757994011,26cyclictest0-21swapper/009:30:010
110122405,13sleep00-21swapper/008:47:330
2376099393,33cyclictest0-21swapper/312:37:153
2376099393,33cyclictest0-21swapper/312:02:333
2376099393,33cyclictest0-21swapper/310:39:403
2376099393,33cyclictest0-21swapper/310:39:393
2376099393,33cyclictest0-21swapper/309:19:353
23760993916,20cyclictest0-21swapper/310:15:313
23760993916,20cyclictest0-21swapper/310:15:303
23760993915,22cyclictest0-21swapper/311:35:323
23760993915,22cyclictest0-21swapper/311:35:323
23759993918,18cyclictest0-21swapper/211:12:572
23759993918,18cyclictest0-21swapper/211:12:572
23759993914,23cyclictest0-21swapper/209:12:232
23759993914,22cyclictest0-21swapper/212:31:102
23759993913,23cyclictest0-21swapper/210:18:542
23759993913,23cyclictest0-21swapper/210:18:532
2375799399,18cyclictest0-21swapper/012:00:360
23757993915,21cyclictest0-21swapper/012:38:180
176682395,14sleep00-21swapper/007:57:280
85452385,11sleep00-21swapper/008:43:200
280842385,11sleep20-21swapper/208:18:162
2376099383,32cyclictest0-21swapper/310:30:203
2376099383,32cyclictest0-21swapper/309:57:153
2376099383,32cyclictest0-21swapper/308:15:173
2376099383,30cyclictest18832-21apt-get11:10:183
2376099383,30cyclictest18832-21apt-get11:10:183
2376099383,23cyclictest26850-21tr11:25:183
2376099383,20cyclictest21648-21stress11:33:403
2376099382,22cyclictest21651-21stress11:51:593
23759993818,17cyclictest0-21swapper/211:34:172
23759993816,19cyclictest0-21swapper/212:00:052
23759993812,23cyclictest0-21swapper/210:24:312
2375799385,19cyclictest0-21swapper/010:49:480
23757993813,21cyclictest0-21swapper/009:45:290
23757993813,21cyclictest0-21swapper/009:45:290
134712385,14sleep00-21swapper/008:51:070
27312375,14sleep00-21swapper/007:30:090
2376099373,32cyclictest21648-21stress12:19:473
2376099373,31cyclictest0-21swapper/310:55:003
2376099373,30cyclictest11592-21apt-get08:50:143
2376099373,29cyclictest27562-21apt-get12:30:133
2376099372,32cyclictest21651-21stress10:20:423
2376099372,32cyclictest21648-21stress10:03:503
2376099372,23cyclictest30438-21unixbench_singl08:20:463
2376099372,23cyclictest12334-21unixbench_singl07:45:303
2376099372,21cyclictest21651-21stress12:25:273
23760993714,20cyclictest0-21swapper/309:50:213
2375999376,22cyclictest0-21swapper/208:20:302
23759993714,20cyclictest0-21swapper/212:35:102
23759993711,23cyclictest0-21swapper/211:43:232
23759993710,24cyclictest0-21swapper/209:15:032
2375899377,19cyclictest0-21swapper/110:50:431
23757993714,20cyclictest0-21swapper/012:26:580
23757993712,22cyclictest0-21swapper/011:20:230
23757993711,23cyclictest0-21swapper/012:24:550
83482364,14sleep20-21swapper/208:41:212
37962365,13sleep20-21swapper/208:35:112
2376099363,30cyclictest21651-21stress12:05:433
2376099363,30cyclictest21648-21stress09:10:223
2376099363,30cyclictest0-21swapper/310:05:143
2376099363,30cyclictest0-21swapper/309:00:263
2376099363,30cyclictest0-21swapper/309:00:263
2376099363,30cyclictest0-21swapper/308:30:193
2376099363,30cyclictest0-21swapper/307:15:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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