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2026-06-17 - 16:22
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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 Wed Jun 17, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27911213011,20sleep10-21swapper/106:57:401
28168991203,83cyclictest20365-21apt-get12:09:181
28168991203,83cyclictest20365-21apt-get12:09:181
28168991133,85cyclictest19167-21ssh10:19:111
196532980,6sleep30-21swapper/310:19:593
2816499973,65cyclictest20365-21apt-get12:09:100
2816499973,65cyclictest20365-21apt-get12:09:100
28164999729,43cyclictest0-21swapper/011:14:390
28173999557,31cyclictest28154-21cyclictest10:44:162
2709629413,54sleep227123-21/usr/sbin/munin06:54:312
28168999360,9cyclictest181rcu_preempt09:05:331
2817399924,41cyclictest11119-21/usr/sbin/munin11:54:032
2817399914,43cyclictest1332-21latency_hist10:43:562
2817399914,43cyclictest1332-21latency_hist10:43:562
2817399914,40cyclictest25597-21/usr/sbin/munin11:24:112
28173999139,45cyclictest0-21swapper/211:34:092
2817399894,43cyclictest14752-21open_files11:59:232
2817399894,43cyclictest14752-21open_files11:59:232
28173998940,42cyclictest0-21swapper/209:19:312
2817399893,34cyclictest15209-21unixbench_multi07:54:312
2817399892,32cyclictest30153-21cron08:43:542
2816899893,50cyclictest30347-21apt-get09:44:111
2817399885,42cyclictest8451-21switchtime10:54:282
2817399884,29cyclictest877-21/usr/sbin/munin09:49:302
2817399884,29cyclictest877-21/usr/sbin/munin09:49:302
2817399883,31cyclictest18886-21modprobe08:08:542
2817399883,31cyclictest18886-21modprobe08:08:542
2817399883,31cyclictest16397-21latency_hist11:08:562
2817399883,31cyclictest16397-21latency_hist11:08:562
2817399883,29cyclictest6096-21fschecks_count09:04:122
2817399882,31cyclictest15910-21apt-get10:14:042
2816499885,59cyclictest9144-21apt-get09:09:240
2817399875,43cyclictest13319-21latency_hist11:03:562
2817399875,40cyclictest352-21runrttasks11:47:592
2817399874,32cyclictest23329-21/usr/sbin/munin12:14:182
28173998742,38cyclictest0-21swapper/208:59:272
28173998740,41cyclictest7753-21latency_hist07:33:572
2817399873,33cyclictest27792-21grep08:34:282
2817399873,32cyclictest4460-21latency_hist07:23:562
2817399872,32cyclictest25873-21cut08:29:172
2817399869,38cyclictest2579-21diskmemload12:19:122
2817399864,33cyclictest30049-21munin-node07:04:052
2817399864,31cyclictest25552-21latency_hist11:23:572
2817399863,35cyclictest30275-21grep12:24:302
2817399863,34cyclictest31796-21awk08:48:532
2817399863,34cyclictest31796-21awk08:48:532
2817399863,34cyclictest21396-21fschecks_time09:29:142
2817399863,32cyclictest12006-21unixbench_singl07:44:302
2817399863,31cyclictest30012-21latency_hist07:03:582
2817399863,30cyclictest22951-21grep08:19:262
28173998626,49cyclictest0-21swapper/207:24:182
2817399862,34cyclictest18071-21sed12:04:292
2817399862,31cyclictest14930-21latency_hist09:18:562
2817399862,30cyclictest19971-21sh10:20:062
28173998615,31cyclictest21477-21diskmemload11:16:332
28164998642,28cyclictest31151-21switchtime08:44:270
28164998642,28cyclictest31151-21switchtime08:44:270
2817399854,32cyclictest16624-21/usr/sbin/munin11:09:122
2817399854,30cyclictest30049-21munin-node09:09:042
28173998541,36cyclictest0-21swapper/211:39:292
28173998535,43cyclictest17827-21kworker/u17:1-xprtiod09:24:282
2817399853,32cyclictest9135-21cat11:49:322
2817399853,32cyclictest25462-21latency_hist08:28:562
2817399852,35cyclictest25591-21grep10:29:172
2817399852,35cyclictest25591-21grep10:29:172
2817399852,31cyclictest1471-21fschecks_time08:54:152
2817399852,31cyclictest1471-21fschecks_time08:54:152
28173998522,9cyclictest0-21swapper/210:38:052
28173998515,22cyclictest31685-21diskmemload09:45:092
28164998567,12cyclictest26686-21unixbench_singl11:24:340
28173998463,14cyclictest535-21threads07:09:282
2817399844,39cyclictest352-21runrttasks11:29:062
2817399844,34cyclictest10878-21grep10:04:292
2817399844,32cyclictest22105-21/usr/sbin/munin10:24:192
2817399844,30cyclictest19322-21entropy08:09:152
2817399844,30cyclictest19322-21entropy08:09:152
2817399843,31cyclictest9943-21ntp_kernel_pll_07:39:212
2817399843,31cyclictest9943-21ntp_kernel_pll_07:39:212
2817399843,31cyclictest20751-21/usr/sbin/munin08:14:272
2817399843,31cyclictest16103-21fschecks_count07:59:162
2817399843,31cyclictest12947-21fschecks_time07:49:152
28168998461,12cyclictest0-21swapper/111:24:341
28164998441,29cyclictest28154-21cyclictest11:02:000
2817399834,34cyclictest22093-21runrttasks12:11:152
2817399834,34cyclictest22093-21runrttasks12:11:152
2817399833,32cyclictest2724-21modprobe07:18:532
2817399833,31cyclictest352-21runrttasks09:35:052
2817399833,28cyclictest8043-21fschecks_count07:34:152
2817399833,28cyclictest8043-21fschecks_count07:34:152
2817399832,32cyclictest352-21runrttasks10:03:042
2817399832,32cyclictest352-21runrttasks10:03:042
2817399832,32cyclictest27397-21grep09:39:152
280022839,42sleep028029-21munin-run06:58:540
2817399823,31cyclictest32046-21/usr/sbin/munin08:49:312
2817399823,29cyclictest14856-21sh10:11:522
2817399823,29cyclictest14856-21sh10:11:522
28173998218,30cyclictest4438-21needreboot09:54:222
28164998260,16cyclictest1-21systemd09:43:560
2816899813,43cyclictest7471-21latency_hist10:53:561
2816899813,43cyclictest7471-21latency_hist10:53:561
2816499813,33cyclictest11864-21sendmail_mailst11:54:260
2817399803,31cyclictest352-21runrttasks10:49:262
2817399803,31cyclictest352-21runrttasks10:49:262
28168998052,21cyclictest29612-21fschecks_time12:24:161
28164998062,12cyclictest18605-21http10:18:530
28164998056,16cyclictest2374-21systemd-journal10:02:090
28164998056,16cyclictest2374-21systemd-journal10:02:090
28168997958,12cyclictest4344-21munin-plugin-st07:23:541
28164997958,12cyclictest4185-21fschecks_time09:54:160
28168997857,14cyclictest28154-21cyclictest10:31:121
28168997857,14cyclictest28154-21cyclictest10:31:121
28168997852,16cyclictest0-21swapper/112:08:551
28164997856,15cyclictest22264-21latency_hist08:18:560
28164997843,28cyclictest2805-21latency_hist07:18:560
28168997748,21cyclictest0-21swapper/107:03:581
2816899773,51cyclictest2740-21munin-run07:18:541
28164997758,13cyclictest277-21dbus-daemon09:18:540
28168997648,18cyclictest0-21swapper/109:29:141
2816899762,44cyclictest21667-21unixbench_multi08:14:311
28164997657,13cyclictest31906-21kworker/u18:3+events_unbound08:43:540
28164997653,14cyclictest2579-21diskmemload09:32:070
28164997649,17cyclictest31001-21ssh10:38:560
28179997517,42cyclictest0-21swapper/312:09:143
28179997517,42cyclictest0-21swapper/312:09:143
28168997554,14cyclictest1362-21kworker/u17:4-rpciod11:05:161
28168997554,14cyclictest1362-21kworker/u17:4-rpciod11:05:161
28168997551,17cyclictest28154-21cyclictest08:29:171
28168997550,17cyclictest352-21runrttasks09:35:441
2816899753,38cyclictest1178-21fschecks_time09:49:151
2816899753,38cyclictest1178-21fschecks_time09:49:151
28168997454,14cyclictest352-21runrttasks10:43:551
28168997454,14cyclictest352-21runrttasks10:43:551
28164997452,14cyclictest352-21runrttasks11:39:280
2816499742,40cyclictest0-21swapper/010:13:560
2816499742,40cyclictest0-21swapper/010:13:560
28168997349,16cyclictest0-21swapper/110:10:091
28168997349,16cyclictest0-21swapper/110:10:091
28168997346,20cyclictest26582-21fschecks_count12:19:121
279432736,14sleep30-21swapper/306:58:073
2816899723,44cyclictest30606-21sort08:44:131
2816899723,44cyclictest30606-21sort08:44:131
2816899723,43cyclictest2579-21diskmemload11:54:091
28164997254,12cyclictest170-21jbd2/mmcblk2p2-810:29:070
28164997254,12cyclictest170-21jbd2/mmcblk2p2-810:29:070
28164997253,13cyclictest5703-21latency_hist09:03:560
28168997154,11cyclictest16693-21ssh10:14:281
28168997152,13cyclictest30209-21uniq07:04:001
2816899713,32cyclictest7312-21uname09:59:171
2816899713,32cyclictest7312-21uname09:59:171
28164997156,11cyclictest28154-21cyclictest12:04:320
28164997155,10cyclictest16562-21sort11:08:570
28164997155,10cyclictest16562-21sort11:08:570
28164997154,12cyclictest17251-21kworker/u19:0-events_unbound11:38:520
2816499713,27cyclictest29276-21grep06:59:310
28168997046,16cyclictest7771-21diskmemload11:48:481
2816899704,44cyclictest18973-21latency_hist08:08:561
2816899704,44cyclictest18973-21latency_hist08:08:561
2816899702,34cyclictest3144-21grep08:59:151
28164997053,12cyclictest0-21swapper/008:38:560
28164997052,12cyclictest22354-21fschecks_count10:24:170
28164997044,18cyclictest8597-21threads07:34:290
28164997044,18cyclictest8597-21threads07:34:290
28164997036,29cyclictest0-21swapper/011:19:030
28168996950,13cyclictest6769-21latency_hist09:58:571
28168996948,12cyclictest0-21swapper/110:04:291
2816899692,59cyclictest9627-21diskstats09:10:021
2816899692,32cyclictest15454-21fschecks_time09:19:181
2816499693,48cyclictest30612-21apt-get07:04:220
2816499693,46cyclictest18953-21switchtime09:24:290
28168996849,12cyclictest4558-21sh11:43:091
28168996842,18cyclictest23940-21latency_hist08:23:571
2816899683,42cyclictest23713-21head11:19:301
2816899683,36cyclictest24780-21modprobe10:28:531
2816899683,34cyclictest14096-21/usr/sbin/munin11:59:161
2816899683,34cyclictest14096-21/usr/sbin/munin11:59:161
28164996853,8cyclictest0-21swapper/010:44:150
28164996852,10cyclictest31877-21ssh09:45:420
28164996852,10cyclictest2579-21diskmemload09:51:400
28164996852,10cyclictest2579-21diskmemload09:51:400
28164996841,14cyclictest0-21swapper/008:09:150
28164996841,14cyclictest0-21swapper/008:09:150
2816499683,36cyclictest352-21runrttasks09:05:330
28164996825,36cyclictest0-21swapper/010:49:230
28164996825,36cyclictest0-21swapper/010:49:230
2816899675,38cyclictest352-21runrttasks11:16:491
28168996752,10cyclictest297-21systemd-logind07:43:541
28168996752,10cyclictest297-21systemd-logind07:43:541
28168996751,9cyclictest0-21swapper/107:54:321
28168996747,14cyclictest32187-21ntp_kernel_pll_11:34:201
28168996741,16cyclictest2501-21ssh10:44:271
28164996753,10cyclictest28154-21cyclictest07:10:180
28164996752,10cyclictest3585-21processes07:19:270
28164996750,11cyclictest1-21systemd10:54:420
28164996743,17cyclictest5235-21cpuspeed11:44:100
28164996742,18cyclictest27907-21ssh12:20:480
28164996740,20cyclictest0-21swapper/012:24:320
28164996736,24cyclictest0-21swapper/012:14:180
2816499673,52cyclictest17887-21latency_hist09:23:560
28164996735,25cyclictest0-21swapper/010:08:010
2816499673,34cyclictest19621-21grep10:19:590
28168996644,16cyclictest352-21runrttasks07:24:171
28164996653,9cyclictest28154-21cyclictest11:33:330
28164996652,8cyclictest32572-21ntp_kernel_pll_08:49:230
28164996650,10cyclictest14812-21ntp_kernel_pll_07:54:240
28164996650,10cyclictest0-21swapper/011:59:290
28164996650,10cyclictest0-21swapper/011:59:290
28164996637,19cyclictest0-21swapper/007:24:290
2816499663,44cyclictest22355-21/usr/sbin/munin08:19:270
2816499663,32cyclictest1204-21/usr/sbin/munin08:54:210
2816499663,32cyclictest1204-21/usr/sbin/munin08:54:210
28168996549,9cyclictest0-21swapper/107:59:311
28168996546,13cyclictest13345-21mailstats07:49:271
28168996545,14cyclictest19325-21latency_hist11:13:551
28168996542,12cyclictest0-21swapper/107:44:301
28164996548,10cyclictest0-21swapper/008:03:540
2816499654,33cyclictest8540-21if_err_eth011:49:190
2816499653,30cyclictest1329-21apt10:43:530
2816499653,30cyclictest1329-21apt10:43:530
2816499653,29cyclictest10030-21proc_pri07:39:250
2816499653,29cyclictest10030-21proc_pri07:39:250
28168996447,12cyclictest28154-21cyclictest10:54:291
28168996445,11cyclictest0-21swapper/111:49:091
28168996444,14cyclictest28344-21forks10:34:141
28168996442,11cyclictest0-21swapper/108:39:151
28168996441,14cyclictest20534-21systemd-run08:13:541
28168996441,14cyclictest20534-21systemd-run08:13:541
2816899642,33cyclictest2132-21grep08:54:291
2816899642,33cyclictest2132-21grep08:54:291
28164996439,17cyclictest12868-21fschecks_count07:49:140
2816899632,32cyclictest2579-21diskmemload11:02:521
2816499633,34cyclictest17301-21taskset11:09:240
2816499632,29cyclictest11628-21proc_pri07:44:250
2816899627,32cyclictest31-21ksoftirqd/107:13:511
28168996244,11cyclictest0-21swapper/108:38:571
28168996240,10cyclictest0-21swapper/109:24:111
28168996238,14cyclictest0-21swapper/107:34:301
28168996238,14cyclictest0-21swapper/107:34:301
2816899623,46cyclictest23496-21cstates12:14:101
2816899622,29cyclictest31313-21idleruntime-cro11:33:531
28164996244,11cyclictest17689-21fschecks_count08:04:150
28164996244,11cyclictest17689-21fschecks_count08:04:150
2816499622,24cyclictest25122-21taskset08:26:350
28164996210,30cyclictest7565-21modprobe07:33:540
2817999612,33cyclictest30465-21chrt07:04:063
2816899613,42cyclictest7175-21head07:29:291
2816899613,40cyclictest352-21runrttasks09:17:341
2816899613,38cyclictest27709-21ntp_kernel_pll_09:39:221
28164996139,14cyclictest0-21swapper/009:34:190
28168996037,12cyclictest0-21swapper/108:24:171
2817999593,42cyclictest9204-21chrt09:09:143
28164995942,11cyclictest2374-21systemd-journal08:33:530
2817999584,40cyclictest29240-21chrt11:29:223
2816899583,28cyclictest32551-21grep08:49:221
2817999572,40cyclictest3257-21taskset11:39:313
2817999563,40cyclictest10250-21taskset10:58:423
2817999562,39cyclictest30873-21taskset08:44:183
2817999562,39cyclictest30873-21taskset08:44:183
2817999562,35cyclictest31634-21taskset09:45:013
2817999553,39cyclictest21440-21taskset08:14:293
2817999544,37cyclictest13611-21taskset07:49:303
2817999544,35cyclictest21247-21taskset09:29:083
2817999543,39cyclictest19126-21chrt08:08:583
2817999543,38cyclictest15136-21chrt11:59:293
2817999543,38cyclictest15136-21chrt11:59:293
2817999543,38cyclictest10045-21chrt10:04:103
2817999533,38cyclictest13962-21chrt11:58:563
2817999533,35cyclictest17022-21chrt10:14:323
2817999532,35cyclictest22353-21taskset10:24:173
289062520,9sleep30-21swapper/312:23:363
2817999523,38cyclictest20182-21chrt12:08:573
2817999523,33cyclictest9366-21chrt07:38:563
2817999523,33cyclictest9366-21chrt07:38:563
2817999522,37cyclictest20638-21chrt08:13:563
2817999522,37cyclictest20638-21chrt08:13:563
2817999522,36cyclictest25773-21chrt08:29:153
2817999513,35cyclictest5852-21chrt09:56:533
2817999512,37cyclictest29606-21chrt07:03:093
2817999512,36cyclictest11238-21taskset10:59:233
2817999504,37cyclictest30691-21chrt12:25:143
2817999503,37cyclictest26089-21chrt10:29:283
2817999503,37cyclictest26089-21chrt10:29:283
2817999503,34cyclictest29108-21chrt08:39:163
2817999502,37cyclictest29938-21chrt09:43:553
2817999502,35cyclictest19475-21taskset09:25:113
2817999502,29cyclictest10111-21chrt11:51:553
2817999493,33cyclictest26264-21chrt11:24:273
2817999492,35cyclictest28232-21chrt10:34:103
2817999492,33cyclictest27625-21chrt08:34:223
2817999492,33cyclictest24366-21chrt09:34:153
2817999483,36cyclictest7071-21taskset09:04:443
2817999483,35cyclictest5430-21chrt07:24:303
2817999482,37cyclictest21721-21chrt11:17:143
2817999482,35cyclictest14905-21chrt07:54:283
28179994812,25cyclictest5179-21taskset11:44:093
2817999473,34cyclictest5541-21chrt09:03:513
2817999473,32cyclictest6106-21chrt10:50:273
2817999473,32cyclictest6106-21chrt10:50:273
2817999472,36cyclictest16045-21chrt11:08:103
2817999472,36cyclictest16045-21chrt11:08:103
2817999472,31cyclictest480-21taskset07:09:283
28179994710,22cyclictest12334-21chrt09:14:133
2817999468,27cyclictest24517-21taskset12:14:413
2817999462,35cyclictest19122-21taskset11:13:213
2817999462,31cyclictest23271-21chrt11:19:253
2817999462,29cyclictest2578-21chrt10:44:273
2817999453,33cyclictest15542-21chrt10:13:473
2817999453,33cyclictest15542-21chrt10:13:473
2817999453,32cyclictest2090-21chrt09:49:433
2817999453,32cyclictest2090-21chrt09:49:433
2817999453,29cyclictest4330-21taskset07:23:543
2817999452,34cyclictest7489-21chrt09:59:203
2817999452,34cyclictest7489-21chrt09:59:203
2817999452,31cyclictest32754-21taskset08:49:283
28179994511,24cyclictest6553-21taskset07:29:163
2817999443,28cyclictest31140-21taskset10:39:083
2817999443,28cyclictest31140-21taskset10:39:083
2817999442,33cyclictest17798-21chrt09:23:533
2817999434,29cyclictest23986-21taskset08:24:093
2817999432,25cyclictest23885-21chrt08:23:573
28179994310,24cyclictest31645-21taskset11:34:083
2817999422,28cyclictest11752-21chrt07:44:273
28179994211,21cyclictest1937-21chrt07:14:263
2817999403,27cyclictest10058-21taskset07:39:253
2817999403,27cyclictest10058-21taskset07:39:253
2817999403,25cyclictest1196-21taskset08:53:583
2817999403,25cyclictest1196-21taskset08:53:583
2817999393,26cyclictest17213-21taskset08:03:353
2817999382,24cyclictest17493-21taskset08:04:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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