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2025-07-17 - 00:50
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100 highest latencies:
System rackeslot2.osadl.org (updated Wed Jul 16, 2025 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18503052340,3sleep30-21swapper/312:00:243
16750472340,1sleep20-21swapper/210:20:232
159296522718,3sleep20-21swapper/209:34:352
1401416992711,2cyclictest1899414-21munin-run12:30:000
25010912618,3phc2sys0-21swapper/310:34:153
25010912518,3phc2sys0-21swapper/311:39:413
25010912518,2phc2sys0-21swapper/312:17:493
25010912518,2phc2sys0-21swapper/311:28:433
25010912418,3phc2sys0-21swapper/311:15:243
25010912418,3phc2sys0-21swapper/311:02:053
25010912418,2phc2sys0-21swapper/311:50:443
25010912418,2phc2sys0-21swapper/311:50:433
25010912418,2phc2sys0-21swapper/311:47:073
25010912418,2phc2sys0-21swapper/310:56:543
25010912418,2phc2sys0-21swapper/310:38:583
25010912418,2phc2sys0-21swapper/310:24:593
25010912418,2phc2sys0-21swapper/309:55:263
25010912418,2phc2sys0-21swapper/309:48:003
25010912418,2phc2sys0-21swapper/309:26:363
25010912418,2phc2sys0-21swapper/309:15:583
25010912418,2phc2sys0-21swapper/308:59:343
25010912418,2phc2sys0-21swapper/308:50:003
25010912418,2phc2sys0-21swapper/308:15:063
25010912418,2phc2sys0-21swapper/308:05:083
25010912418,2phc2sys0-21swapper/308:03:153
25010912418,2phc2sys0-21swapper/307:41:553
25010912417,2phc2sys0-21swapper/310:05:083
25010912318,3phc2sys0-21swapper/312:26:013
25010912318,3phc2sys0-21swapper/312:22:223
25010912318,3phc2sys0-21swapper/312:05:533
25010912318,3phc2sys0-21swapper/310:40:293
25010912318,3phc2sys0-21swapper/310:11:273
25010912318,3phc2sys0-21swapper/309:53:313
25010912318,3phc2sys0-21swapper/309:41:213
25010912318,3phc2sys0-21swapper/309:30:433
25010912318,3phc2sys0-21swapper/309:13:563
25010912318,3phc2sys0-21swapper/309:03:013
25010912318,3phc2sys0-21swapper/308:31:233
25010912318,3phc2sys0-21swapper/308:20:093
25010912318,3phc2sys0-21swapper/307:39:053
25010912317,2phc2sys0-21swapper/310:25:363
25010912317,2phc2sys0-21swapper/309:37:383
25010912317,2phc2sys0-21swapper/309:06:163
25010912317,2phc2sys0-21swapper/308:51:283
25010912317,2phc2sys0-21swapper/307:32:373
25010912317,2phc2sys0-21swapper/307:19:273
190670822318,3sleep30-21swapper/312:32:483
187096922318,3sleep30-21swapper/312:11:433
157404122318,3sleep30-21swapper/309:22:013
1401417992316,6cyclictest1-21systemd11:40:021
25010912218,2phc2sys0-21swapper/311:55:213
25010912218,2phc2sys0-21swapper/311:44:523
25010912218,2phc2sys0-21swapper/311:24:083
25010912218,2phc2sys0-21swapper/311:24:073
25010912217,3phc2sys0-21swapper/308:44:533
25010912217,3phc2sys0-21swapper/308:10:553
25010912217,3phc2sys0-21swapper/307:12:453
191480722218,2sleep20-21swapper/212:36:232
188026722218,2sleep20-21swapper/212:17:432
186168522218,2sleep20-21swapper/212:05:452
185518522218,2sleep20-21swapper/212:04:252
180934522218,2sleep20-21swapper/211:36:072
176681822218,2sleep30-21swapper/311:12:473
175871422218,3sleep30-21swapper/311:08:523
173105622218,2sleep30-21swapper/310:50:593
171412322218,2sleep20-21swapper/210:41:522
169782722218,2sleep20-21swapper/210:33:592
166916622218,2sleep20-21swapper/210:15:282
165524822218,2sleep20-21swapper/210:10:142
164496022218,2sleep20-21swapper/210:03:212
159356922218,2sleep20-21swapper/209:35:042
158192722218,2sleep20-21swapper/209:25:422
155584122218,2sleep20-21swapper/209:11:022
150718922218,2sleep30-21swapper/308:35:183
1401417992216,5cyclictest1846897-21latency_hist11:59:591
1401416992216,5cyclictest1707596-21latency_hist10:40:020
1401416992214,7cyclictest0-21swapper/012:35:010
1401416992214,7cyclictest0-21swapper/012:25:010
25010912117,2phc2sys0-21swapper/312:35:413
25010912117,2phc2sys0-21swapper/307:45:303
25010912117,2phc2sys0-21swapper/307:25:173
25010912115,2phc2sys0-21swapper/308:29:173
190627222117,2sleep20-21swapper/212:32:032
189881422117,2sleep20-21swapper/212:29:052
188935822117,2sleep20-21swapper/212:23:172
183748922117,2sleep20-21swapper/211:54:242
183748922117,2sleep20-21swapper/211:54:232
180138222118,2sleep20-21swapper/211:32:142
177627122117,2sleep20-21swapper/211:18:562
176726322117,2sleep20-21swapper/211:13:302
175681722117,2sleep20-21swapper/211:05:372
174016822118,2sleep20-21swapper/210:56:482
173281122118,2sleep20-21swapper/210:53:552
164392422118,2sleep30-21swapper/310:01:373
163685622117,2sleep20-21swapper/209:59:252
162643422117,2sleep20-21swapper/209:52:102
152948122117,2sleep20-21swapper/208:50:262
151086522117,2sleep20-21swapper/208:35:252
1401416992112,8cyclictest1851100-21kthreadcore12:00:250
1401416992110,6cyclictest0-21swapper/009:50:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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