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2026-05-12 - 00:57
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackfslot7.osadl.org (updated Mon May 11, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29921719911112,79cyclictest0-21swapper/209:40:142
2992173998363,19cyclictest3162495-21threads12:15:224
2992174998225,38cyclictest2997310-21kworker/5:007:27:455
2992173998138,40cyclictest3104867-21switchtime10:30:234
2992173997777,0cyclictest3044694-21munin-run08:45:014
2992173997618,39cyclictest3040722-21ld08:35:194
2992171997537,19cyclictest876-21mta-sts-daemon07:15:162
2992173997416,39cyclictest3150116-21telnet11:55:124
2992173997214,39cyclictest3083999-21cut09:55:134
2992174997133,38cyclictest70-21ksoftirqd/511:05:175
299217399708,40cyclictest3110190-21rt-features10:40:214
2992169996931,19cyclictest875-21mta-sts-daemon09:35:150
299217399676,41cyclictest3089057-21taskset10:02:564
2992173996729,19cyclictest3019944-21munin-run08:00:024
2992173996627,38cyclictest874-21mta-sts-daemon09:50:164
2992174996527,38cyclictest3105324-21kworker/5:1+events_power_efficient12:16:065
299217399657,19cyclictest0-21swapper/410:39:464
2992173996426,19cyclictest0-21swapper/408:55:244
2992173996425,19cyclictest6050ktimers/409:09:394
299217399624,19cyclictest0-21swapper/411:02:324
2992173996122,19cyclictest0-21swapper/409:22:114
299217399600,59cyclictest0-21swapper/410:51:004
2992173995922,18cyclictest3037788-21meminfo08:30:204
2992173995921,38cyclictest3024144-21ntpq08:05:224
2992173995919,39cyclictest6050ktimers/407:40:534
299217399580,58cyclictest0-21swapper/411:51:214
2992173995719,19cyclictest236199-21snmpd09:38:194
299217399570,38cyclictest3055780-21taskset09:03:064
299217399570,38cyclictest3055780-21taskset09:03:054
299217399570,38cyclictest3031097-21latency_hist08:20:014
299217399560,37cyclictest3125068-21latency_hist11:10:004
299217399560,17cyclictest0-21swapper/407:48:144
2992173995536,19cyclictest1-21systemd10:30:014
2992173995517,38cyclictest236199-21snmpd12:11:584
2992173995516,39cyclictest3155688-21cat12:05:124
2992173995515,39cyclictest3169592-21df12:30:144
2992173995419,15cyclictest0-21swapper/408:13:494
2992173995415,38cyclictest3127791-21latency_hist11:15:004
2992173995414,39cyclictest0-21swapper/408:52:434
2992173995414,39cyclictest0-21swapper/407:35:564
2992173995314,39cyclictest0-21swapper/410:49:334
2992173995314,19cyclictest0-21swapper/411:20:124
2992173995313,40cyclictest0-21swapper/408:21:374
2992174995213,39cyclictest0-21swapper/510:20:175
2992173995233,19cyclictest0-21swapper/411:28:444
2992173995214,38cyclictest0-21swapper/409:20:024
2992173995214,19cyclictest0-21swapper/412:24:324
2992173995213,19cyclictest0-21swapper/411:40:214
2992173995213,19cyclictest0-21swapper/409:45:254
2992173995213,19cyclictest0-21swapper/408:00:214
2992169995212,39cyclictest0-21swapper/009:55:160
2992173995133,18cyclictest0-21swapper/409:12:234
2992173995132,19cyclictest0-21swapper/411:33:434
2992173995112,19cyclictest0-21swapper/412:35:214
2992173995112,19cyclictest0-21swapper/411:45:124
2992173995110,40cyclictest0-21swapper/407:15:134
2992173995032,18cyclictest0-21swapper/412:25:354
2992173995011,19cyclictest0-21swapper/410:55:314
2992173995011,19cyclictest0-21swapper/407:50:134
2992173995010,40cyclictest0-21swapper/410:18:254
2992173995010,40cyclictest0-21swapper/409:31:294
2992174994931,0cyclictest0-21swapper/509:33:555
299217399499,40cyclictest0-21swapper/407:32:014
299217399499,0cyclictest0-21swapper/412:00:174
2992173994931,18cyclictest0-21swapper/409:28:364
2992173994930,19cyclictest0-21swapper/410:22:454
2992173994911,19cyclictest3093640-21ntpq10:10:224
2992173994910,19cyclictest0-21swapper/409:41:064
2992173994910,19cyclictest0-21swapper/407:21:224
2992170994931,18cyclictest870-21mta-sts-daemon11:40:171
299217599489,39cyclictest0-21swapper/607:50:176
2992175994829,19cyclictest0-21swapper/609:05:166
299217399489,19cyclictest0-21swapper/411:35:044
2992173994830,18cyclictest0-21swapper/411:15:304
2992173994829,19cyclictest0-21swapper/410:06:434
2992171994810,19cyclictest0-21swapper/207:25:152
299217099489,38cyclictest0-21swapper/107:40:161
2992170994830,18cyclictest0-21swapper/108:35:151
299217599470,47cyclictest0-21swapper/607:40:206
2992173994729,18cyclictest0-21swapper/408:27:274
299217099474,19cyclictest0-21swapper/110:35:161
2992175994628,0cyclictest0-21swapper/608:15:146
2992175994626,19cyclictest781ktimers/610:45:166
299217499468,38cyclictest3122360-21kworker/4:212:10:075
299217499468,19cyclictest0-21swapper/509:20:155
299217399467,19cyclictest0-21swapper/407:27:054
299217399467,0cyclictest0-21swapper/408:45:054
299217099468,19cyclictest0-21swapper/112:35:171
2992169994628,18cyclictest0-21swapper/008:20:160
2992169994627,19cyclictest0-21swapper/012:10:160
299217499458,18cyclictest0-21swapper/509:15:155
299216999457,19cyclictest0-21swapper/007:40:160
299217399444,40cyclictest0-21swapper/407:10:294
299217499435,19cyclictest0-21swapper/507:51:475
299216999434,39cyclictest0-21swapper/008:25:160
2992169994223,19cyclictest0-21swapper/007:55:160
299217499413,0cyclictest0-21swapper/509:45:155
299217099413,38cyclictest0-21swapper/107:45:171
299217099413,19cyclictest0-21swapper/109:25:171
299217699400,1cyclictest3059902-21awk09:10:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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