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2026-09-07 - 04:07
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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 highest latencies:
System rackbslot7.osadl.org (updated Mon Sep 07, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
428211411,35sleep1430-21ntp_states19:05:231
720211111,73sleep2800-21unixbench_multi19:05:332
1408991113,95cyclictest20013-21chrt22:20:103
13939910726,46cyclictest0-21swapper/023:13:030
3080321000,7sleep10-21swapper/122:36:331
1402999047,32cyclictest3335-21basename00:29:442
1393998927,21cyclictest22425-21seq00:07:560
1398998867,12cyclictest0-21swapper/119:59:441
1402998772,10cyclictest1381-21cyclictest23:15:232
1393998628,23cyclictest1021-21seq21:50:010
1393998628,23cyclictest1021-21seq21:50:010
1393998628,17cyclictest18140-21seq19:59:590
1393998626,20cyclictest359-21snmpd20:32:230
1393998621,26cyclictest23692-21ssh00:09:580
1393998527,19cyclictest12253-21seq23:50:430
1393998526,29cyclictest14004-21seq21:18:360
1393998524,27cyclictest9097-21seq22:02:210
1393998524,27cyclictest9097-21seq22:02:210
1393998524,23cyclictest0-21swapper/022:21:450
1398998454,20cyclictest5302-21apt-get21:00:511
1393998430,24cyclictest24432-21seq23:19:390
1393998425,26cyclictest784-21seq23:33:160
1393998424,26cyclictest17142-21runrttasks23:06:470
1393998422,23cyclictest0-21swapper/000:34:060
1393998422,23cyclictest0-21swapper/000:34:060
1393998329,22cyclictest26497-21ssh21:38:470
1393998329,22cyclictest26497-21ssh21:38:470
1393998329,19cyclictest28590-21kworker/u17:1+xprtiod00:37:260
1393998323,25cyclictest0-21swapper/021:33:030
1393998323,21cyclictest0-21swapper/019:54:570
1393998316,29cyclictest29499-21runrttasks23:26:360
1393998316,29cyclictest29499-21runrttasks23:26:360
1402998254,19cyclictest31278-21fschecks_count23:30:072
1393998226,20cyclictest10064-21runrttasks23:48:070
1393998224,22cyclictest2912-21seq20:51:390
1393998222,25cyclictest0-21swapper/023:56:140
1393998221,25cyclictest0-21swapper/022:36:400
1402998159,16cyclictest1381-21cyclictest21:40:232
1398998161,14cyclictest19944-21kworker/u17:3-xprtiod22:10:101
1393998132,40cyclictest13109-21modprobe22:09:430
1393998127,21cyclictest12735-21seq19:41:120
1393998126,22cyclictest27241-21seq20:25:590
1393998126,21cyclictest25623-21seq20:20:490
1393998125,22cyclictest11068-21seq19:35:460
1393998125,21cyclictest2670-21seq19:12:000
1393998124,20cyclictest343-21runrttasks21:02:320
1393998124,20cyclictest0-21swapper/023:01:280
1393998124,20cyclictest0-21swapper/023:01:280
1393998123,26cyclictest8127-21seq21:08:430
1393998123,26cyclictest8127-21seq21:08:430
140899804,39cyclictest0-21swapper/320:59:563
1398998065,8cyclictest0-21swapper/123:45:171
1398998056,15cyclictest5138-21fschecks_time23:40:071
1398998056,15cyclictest5138-21fschecks_time23:40:071
1393998027,19cyclictest21018-21seq20:09:020
1393998025,21cyclictest15930-21seq19:51:000
1393998025,21cyclictest15930-21seq19:51:000
1393998025,20cyclictest4627-21seq20:58:070
1393998024,26cyclictest14384-21seq19:46:470
1393998024,20cyclictest343-21runrttasks20:11:300
1393998023,23cyclictest24101-21seq20:17:170
1393998023,21cyclictest17211-21seq23:59:540
1393998021,22cyclictest0-21swapper/019:29:370
1393998018,24cyclictest0-21swapper/023:44:310
1393998018,24cyclictest0-21swapper/023:44:310
1393997926,20cyclictest32214-21seq20:42:400
1393997926,20cyclictest32214-21seq20:42:400
1393997923,26cyclictest0-21swapper/022:32:430
1393997921,22cyclictest0-21swapper/022:19:220
1393997919,22cyclictest0-21swapper/022:13:390
1402997856,15cyclictest29118-21kworker/u18:2-events_unbound19:59:442
1402997851,20cyclictest23196-21kworker/u19:1+nfsiod21:39:042
1402997851,20cyclictest23196-21kworker/u19:1+nfsiod21:39:042
1402997830,14cyclictest0-21swapper/221:49:392
1398997857,15cyclictest19877-21kworker/u19:0+events_unbound21:49:441
1393997842,30cyclictest0-21swapper/019:09:490
1393997827,20cyclictest19995-21seq21:28:000
1393997827,20cyclictest19995-21seq21:28:000
1393997827,20cyclictest16915-21seq21:23:020
1393997824,19cyclictest24735-21seq22:26:560
1393997824,19cyclictest24735-21seq22:26:560
1393997823,17cyclictest7922-21seq22:52:080
1393997822,23cyclictest31028-21runrttasks00:20:250
1393997821,21cyclictest0-21swapper/019:30:510
1402997756,15cyclictest29622-21sh00:19:472
1402997756,15cyclictest29622-21sh00:19:472
1398997743,23cyclictest12980-21kworker/u18:1+nfsiod23:09:471
1393997751,21cyclictest0-21swapper/023:19:570
1393997728,40cyclictest11205-21ssh22:57:350
1393997724,23cyclictest1961-21seq22:42:480
1393997722,26cyclictest0-21swapper/021:49:120
1393997722,22cyclictest0-21swapper/019:17:380
1393997722,22cyclictest0-21swapper/019:17:380
1393997721,19cyclictest0-21swapper/000:26:160
1393997720,22cyclictest0-21swapper/021:54:510
1402997658,10cyclictest0-21swapper/223:55:192
1398997658,12cyclictest12490-21sendmail_mailqu21:15:351
1398997657,14cyclictest12366-21sh22:59:571
1398997657,14cyclictest12366-21sh22:59:571
1398997654,14cyclictest200-21systemd-journal21:36:461
1398997654,14cyclictest200-21systemd-journal21:36:461
1398997641,12cyclictest30667-21ssh23:29:421
1398997641,12cyclictest30667-21ssh23:29:421
1393997620,20cyclictest2906-21runrttasks23:35:400
1393997620,20cyclictest0-21swapper/019:22:320
1393997620,20cyclictest0-21swapper/019:22:320
1398997560,9cyclictest1968-21kworker/u17:2+flush-179:021:40:091
1398997546,7cyclictest181rcu_preempt21:52:451
1398997546,7cyclictest181rcu_preempt21:52:451
1398997546,20cyclictest25355-21threads20:20:211
1393997526,40cyclictest4442-21ssh22:46:080
1393997524,21cyclictest1426-21seq20:48:140
1393997522,19cyclictest343-21runrttasks20:38:220
1402997458,10cyclictest3970-21ssh21:54:482
1402997458,10cyclictest3970-21ssh21:54:482
1402997457,11cyclictest9405-21ssh22:55:012
1402997450,16cyclictest8235-21diskmemload22:30:272
1402997450,13cyclictest0-21swapper/221:01:402
1402997449,14cyclictest0-21swapper/220:10:072
1398997455,10cyclictest0-21swapper/122:44:451
1398997442,12cyclictest19173-21ssh00:02:321
1393997427,16cyclictest28634-21seq21:41:100
264082730,6sleep30-21swapper/322:30:073
1402997360,7cyclictest0-21swapper/221:20:082
1402997353,10cyclictest0-21swapper/223:05:212
1402997349,14cyclictest0-21swapper/220:19:462
1398997354,9cyclictest0-21swapper/121:24:471
1398997352,16cyclictest0-21swapper/100:09:461
1398997344,20cyclictest5793-21sh22:49:441
1393997324,15cyclictest27934-21seq00:15:310
1393997324,15cyclictest27934-21seq00:15:310
1402997258,8cyclictest8491-21/usr/sbin/munin23:45:122
1402997256,9cyclictest0-21swapper/222:20:502
1402997256,9cyclictest0-21swapper/222:19:472
1402997252,9cyclictest0-21swapper/200:11:292
1402997252,11cyclictest0-21swapper/200:04:472
1402997250,13cyclictest0-21swapper/220:29:482
140299721,32cyclictest14901-21seq19:49:592
140299721,32cyclictest14901-21seq19:49:592
1398997256,9cyclictest0-21swapper/100:20:191
1398997256,11cyclictest1381-21cyclictest00:15:061
1398997256,11cyclictest1381-21cyclictest00:15:061
1398997252,15cyclictest1381-21cyclictest23:54:251
140299715,55cyclictest7748-21unixbench_multi19:25:212
1402997151,13cyclictest2015-21fschecks_count20:50:062
1402997151,10cyclictest0-21swapper/200:05:212
1402997147,17cyclictest15235-21latency_hist23:04:462
1402997147,17cyclictest15235-21latency_hist23:04:462
1402997140,22cyclictest6568-21modprobe19:24:442
1402997140,22cyclictest6568-21modprobe19:24:442
1398997154,11cyclictest200-21systemd-journal19:24:451
1398997154,11cyclictest200-21systemd-journal19:24:451
1398997153,9cyclictest0-21swapper/121:30:111
1398997151,10cyclictest0-21swapper/122:05:201
1398997147,14cyclictest0-21swapper/119:10:021
1393997130,34cyclictest9487-21/usr/sbin/munin21:10:290
1402997055,9cyclictest0-21swapper/221:30:152
1402997054,12cyclictest5857-21kworker/u18:1+events_unbound19:34:442
1402997052,9cyclictest0-21swapper/221:10:032
1402997051,9cyclictest0-21swapper/223:53:332
1402997050,9cyclictest0-21swapper/222:50:042
1402997050,11cyclictest0-21swapper/223:20:142
1402997050,10cyclictest0-21swapper/222:09:472
1402997048,12cyclictest0-21swapper/220:39:482
1402997033,26cyclictest13446-21sort22:09:582
1398997053,11cyclictest16908-40ogrotate23:59:451
1398997051,14cyclictest25548-21sendmail_mailqu23:20:181
1398997049,15cyclictest9520-21fschecks_time22:55:061
1398997048,15cyclictest0-21swapper/121:09:471
1398997048,15cyclictest0-21swapper/121:09:471
1398997045,11cyclictest6598-21latency_hist00:34:461
1398997045,11cyclictest6598-21latency_hist00:34:461
1402996955,8cyclictest0-21swapper/223:10:182
1402996952,10cyclictest0-21swapper/200:35:032
1402996947,13cyclictest8321-21diskmemload22:00:212
1402996947,13cyclictest8321-21diskmemload22:00:212
1402996947,12cyclictest0-21swapper/219:35:072
1398996954,9cyclictest16521-21ssh22:14:551
1398996954,8cyclictest0-21swapper/120:10:021
1398996953,11cyclictest1381-21cyclictest20:49:471
1398996953,10cyclictest58-21kcompactd019:35:061
1398996953,10cyclictest24700-21ntp_offset00:11:201
1398996952,11cyclictest326-21systemd-logind20:54:451
1398996950,7cyclictest0-21swapper/121:10:221
1398996949,10cyclictest0-21swapper/122:20:411
1398996949,10cyclictest0-21swapper/100:35:101
1398996947,13cyclictest0-21swapper/119:50:071
1398996947,13cyclictest0-21swapper/119:50:071
68972680,5sleep30-21swapper/300:35:033
1408996817,44cyclictest0-21swapper/300:10:143
1402996854,8cyclictest0-21swapper/222:44:482
1402996850,9cyclictest0-21swapper/223:29:472
1402996850,9cyclictest0-21swapper/223:29:472
1402996849,13cyclictest200-21systemd-journal19:48:342
1402996845,12cyclictest0-21swapper/222:35:072
1402996842,17cyclictest0-21swapper/200:30:092
1402996842,17cyclictest0-21swapper/200:30:092
1398996852,10cyclictest29048-21latency_hist22:34:461
1398996848,10cyclictest0-21swapper/119:40:211
1398996847,15cyclictest8235-21diskmemload23:15:191
1398996846,16cyclictest7818-21ntp_offset22:00:121
1398996846,16cyclictest7818-21ntp_offset22:00:121
139899681,25cyclictest19113-21seq20:00:241
1402996749,8cyclictest0-21swapper/220:05:032
1402996739,20cyclictest23546-21needreboot22:25:122
1402996739,20cyclictest23546-21needreboot22:25:122
1398996752,8cyclictest0-21swapper/120:29:441
1398996748,8cyclictest0-21swapper/119:14:521
1398996748,8cyclictest0-21swapper/119:14:521
1398996745,13cyclictest8957-21ssh22:54:451
1398996743,17cyclictest1381-21cyclictest20:16:031
1408996623,25cyclictest0-21swapper/323:59:473
1402996653,9cyclictest1381-21cyclictest00:21:462
1402996651,8cyclictest0-21swapper/221:05:212
1402996651,8cyclictest0-21swapper/221:05:212
1402996650,7cyclictest0-21swapper/221:55:132
1402996649,8cyclictest0-21swapper/220:20:042
1402996643,15cyclictest12180-21ntp_kernel_pll_19:40:152
1398996650,9cyclictest0-21swapper/120:09:441
1398996649,8cyclictest0-21swapper/121:55:101
1398996648,13cyclictest30997-21/usr/sbin/munin23:30:191
1398996639,19cyclictest4832-21systemd-run20:59:451
140899654,39cyclictest14478-21taskset21:19:453
1402996547,9cyclictest0-21swapper/220:55:082
1402996545,13cyclictest14592-21latency_hist21:19:472
1398996550,10cyclictest358-21ntpd19:29:471
1398996543,11cyclictest0-21swapper/120:35:071
1398996541,12cyclictest0-21swapper/119:30:081
1402996451,7cyclictest0-21swapper/221:29:472
1402996451,7cyclictest0-21swapper/221:29:472
1402996447,8cyclictest0-21swapper/220:00:092
1402996447,12cyclictest0-21swapper/223:35:002
1402996444,14cyclictest3513-21latency22:45:102
1398996448,11cyclictest20716-21ssh21:29:471
1398996448,11cyclictest20716-21ssh21:29:471
1398996447,12cyclictest0-21swapper/122:25:071
1398996447,12cyclictest0-21swapper/122:25:071
1398996444,12cyclictest0-21swapper/120:30:011
1398996435,17cyclictest0-21swapper/120:44:471
1398996435,17cyclictest0-21swapper/120:44:471
1398996432,23cyclictest317-21dbus-daemon23:39:441
11052646,43sleep30-21swapper/319:08:113
140899634,36cyclictest901-21kworker/3:1+events23:50:223
140899634,35cyclictest901-21kworker/3:1+events21:09:573
1402996346,8cyclictest0-21swapper/223:44:462
1402996346,8cyclictest0-21swapper/223:44:462
1398996348,10cyclictest18585-21/usr/sbin/munin23:10:051
1398996346,8cyclictest0-21swapper/119:45:281
1402996244,9cyclictest0-21swapper/220:34:482
1398996248,7cyclictest0-21swapper/100:25:181
1402996148,7cyclictest0-21swapper/219:15:082
1402996148,7cyclictest0-21swapper/219:15:082
140899605,37cyclictest7606-21taskset19:25:203
1402996047,9cyclictest0-21swapper/220:45:182
140899594,38cyclictest2199-21taskset23:35:103
140899593,38cyclictest18350-21taskset22:17:113
140899584,37cyclictest27641-21chrt20:29:473
140899584,36cyclictest5183-21chrt23:40:083
140899584,36cyclictest5183-21chrt23:40:083
1402995846,6cyclictest0-21swapper/219:10:092
1402995835,13cyclictest0-21swapper/220:44:442
1402995835,13cyclictest0-21swapper/220:44:442
140899573,40cyclictest2198-21taskset21:50:373
140899573,40cyclictest2198-21taskset21:50:373
140899573,38cyclictest7449-21chrt22:00:053
140899573,38cyclictest7449-21chrt22:00:053
140899573,38cyclictest21196-21taskset23:14:193
140899573,38cyclictest17724-21chrt21:24:473
140899564,38cyclictest2457-21chrt19:10:213
140899563,39cyclictest376-21chrt21:49:033
140899563,38cyclictest2755-21chrt22:44:463
140899562,36cyclictest3196-21taskset19:14:513
140899562,36cyclictest3196-21taskset19:14:513
140899554,35cyclictest29978-21chrt23:27:533
140899554,35cyclictest29978-21chrt23:27:533
140899553,38cyclictest3842-21chrt22:45:183
140899553,32cyclictest24045-21chrt22:25:213
140899553,32cyclictest24045-21chrt22:25:213
140899552,39cyclictest4408-21chrt21:55:063
140899552,39cyclictest19834-21chrt21:27:353
140899552,39cyclictest19834-21chrt21:27:353
140899552,35cyclictest23423-21chrt21:33:513
140899545,34cyclictest6980-21chrt21:05:023
140899545,34cyclictest6980-21chrt21:05:023
140899544,34cyclictest4053-21chrt00:30:083
140899544,34cyclictest4053-21chrt00:30:083
140899544,34cyclictest19924-21chrt00:04:313
140899543,37cyclictest31717-21taskset22:38:583
140899543,37cyclictest16240-21chrt19:54:443
140899543,37cyclictest16240-21chrt19:54:443
140899543,34cyclictest2629-21taskset20:50:203
140899543,33cyclictest31335-21taskset20:40:083
140899543,33cyclictest31335-21taskset20:40:083
140899542,37cyclictest12001-21chrt19:40:103
140899533,38cyclictest26976-21chrt00:15:053
140899533,38cyclictest26976-21chrt00:15:053
140899533,37cyclictest17321-21taskset19:55:213
140899533,36cyclictest16419-21chrt22:14:473
140899532,36cyclictest32531-21taskset00:24:253
140899532,35cyclictest6004-21chrt19:20:183
140899532,35cyclictest6004-21chrt19:20:183
140899524,36cyclictest25125-21chrt20:20:153
140899524,32cyclictest20064-21chrt20:05:093
140899523,38cyclictest22114-21chrt00:07:063
140899523,38cyclictest11668-21taskset22:05:563
140899523,37cyclictest30061-21taskset20:35:183
140899523,35cyclictest23569-21chrt20:15:173
140899523,33cyclictest972-21chrt00:25:103
140899522,39cyclictest13567-21chrt23:00:343
140899522,39cyclictest13567-21chrt23:00:343
140899522,36cyclictest23910-21chrt23:18:163
140899513,34cyclictest7405-21chrt22:50:453
140899504,32cyclictest24991-21chrt23:20:033
140899503,34cyclictest9345-21chrt19:30:223
140899503,32cyclictest9388-21chrt23:46:203
140899502,32cyclictest24465-21taskset21:35:093
140899502,32cyclictest24465-21taskset21:35:093
140899502,31cyclictest27663-21chrt21:40:113
140899493,33cyclictest16342-21taskset23:05:203
140899493,29cyclictest22925-21chrt20:14:493
140899492,31cyclictest1190-21chrt20:45:223
140899482,33cyclictest10963-21taskset22:56:573
140899473,31cyclictest723-21chrt23:33:073
140899472,34cyclictest19074-21chrt20:00:233
140899472,29cyclictest14259-21taskset19:45:293
1408994514,22cyclictest0-21swapper/320:59:443
140899432,29cyclictest901-21kworker/3:1+events19:35:213
140899432,29cyclictest28257-21taskset20:30:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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