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2026-05-08 - 15:51
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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 Fri May 08, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94799911260,46cyclictest16846-21diskmemload12:21:370
94799911240,7cyclictest0-21swapper/009:47:110
9479991123,36cyclictest17628-21ssh09:56:510
94799911050,53cyclictest0-21swapper/007:12:100
94799911050,53cyclictest0-21swapper/007:12:100
94799911044,62cyclictest9468-21cyclictest12:27:110
94799911040,7cyclictest0-21swapper/011:57:010
94799910843,11cyclictest28028-21ssh12:02:190
94799910826,18cyclictest0-21swapper/011:16:370
94799910739,9cyclictest0-21swapper/010:01:580
94799910739,9cyclictest0-21swapper/010:01:580
94799910718,30cyclictest31153-21seq08:05:260
94799910645,55cyclictest0-21swapper/012:11:370
94799910639,59cyclictest0-21swapper/008:06:570
94799910532,11cyclictest0-21swapper/010:07:100
9489991043,89cyclictest32649-21apt-get10:21:551
94799910448,48cyclictest0-21swapper/011:53:000
94799910448,48cyclictest0-21swapper/011:53:000
94799910444,55cyclictest0-21swapper/009:12:110
94799910444,55cyclictest0-21swapper/009:12:110
94799910444,53cyclictest0-21swapper/009:36:580
9479991044,32cyclictest11249-21munin-node09:31:440
9479991044,32cyclictest11249-21munin-node09:31:440
94799910442,9cyclictest9287-21sh09:42:040
94799910442,9cyclictest9287-21sh09:42:040
94799910438,7cyclictest0-21swapper/009:22:130
94799910438,7cyclictest0-21swapper/009:22:130
9479991043,38cyclictest18041-21timerandwakeup09:02:110
9479991043,34cyclictest879-21cpu12:11:500
9479991033,32cyclictest21448-21latency_hist07:36:380
9479991031,50cyclictest9439-21fschecks_time10:36:570
94949910246,9cyclictest0-21swapper/207:52:072
94949910246,9cyclictest0-21swapper/207:52:072
9479991023,38cyclictest2882-21unin-run10:26:360
9479991023,35cyclictest28812-21modprobe09:21:340
94949910139,13cyclictest0-21swapper/210:12:012
9479991014,35cyclictest9468-21cyclictest07:01:400
9489991004,86cyclictest21741-21cron11:52:371
9489991004,86cyclictest21741-21cron11:52:371
9479991004,34cyclictest3058-21munin-plugin-st11:21:340
9479991004,28cyclictest12216-21/usr/sbin/munin08:47:100
94799910040,11cyclictest15429-21ssh11:41:530
9479991003,38cyclictest12949-21/usr/sbin/munin11:37:080
9479991003,34cyclictest8261-21runrttasks08:32:100
9479991003,32cyclictest5986-21latency_hist10:31:380
9479991003,31cyclictest26794-21fschecks_time10:11:570
94799910033,12cyclictest0-21swapper/010:57:090
94799910026,16cyclictest0-21swapper/008:42:100
947999993,34cyclictest24959-21grep11:02:110
947999993,34cyclictest24959-21grep11:02:110
947999992,33cyclictest2269-21latency_hist08:16:380
947999992,33cyclictest14891-21latency_hist10:46:380
9494999843,9cyclictest0-21swapper/209:10:532
9494999833,12cyclictest0-21swapper/210:22:462
947999984,31cyclictest25489-21mailstats07:47:080
947999983,38cyclictest26904-21sort11:06:440
947999983,35cyclictest26436-21/usr/sbin/munin07:52:010
947999983,35cyclictest26436-21/usr/sbin/munin07:52:010
947999983,35cyclictest18351-21/usr/sbin/munin07:27:030
947999983,34cyclictest9745-21kernelversion11:32:000
947999983,32cyclictest9632-21/usr/sbin/munin07:01:520
947999983,32cyclictest6143-21cat11:26:370
947999983,32cyclictest32104-21/usr/sbin/munin09:27:110
947999982,36cyclictest11677-21/usr/sbin/munin07:07:060
949499974,33cyclictest15697-21fschecks_count08:56:562
949499973,40cyclictest31422-21sort08:06:382
947999973,35cyclictest15405-21mailstats09:52:090
947999973,35cyclictest15405-21mailstats09:52:090
947999973,32cyclictest4558-21ls08:21:590
947999973,32cyclictest16117-21unixbench_singl10:47:130
9479999731,9cyclictest0-21swapper/011:46:550
947999972,35cyclictest28926-21grep07:57:110
947999972,30cyclictest15589-21cstates08:56:520
9494999670,18cyclictest19676-21snmpd08:41:562
949499963,44cyclictest12716-21grep09:47:122
947999964,31cyclictest6027-21fschecks_time08:26:570
947999963,33cyclictest32299-21ls10:21:370
947999963,33cyclictest32299-21ls10:21:370
947999963,31cyclictest23198-21/usr/sbin/munin07:41:550
947999963,31cyclictest10520-21latency_hist08:41:380
947999962,35cyclictest21827-21fschecks_count07:36:560
947999962,32cyclictest6899-21cstates12:21:510
947999962,32cyclictest6899-21cstates12:21:510
947999953,34cyclictest20239-21sort09:06:520
947999953,31cyclictest6384-21fschecks_count10:31:560
947999944,32cyclictest16744-21/usr/sbin/munin07:22:010
947999943,33cyclictest15280-21latency_hist08:56:370
947999943,33cyclictest15280-21latency_hist08:56:370
947999943,32cyclictest352-21runrttasks10:53:280
947999943,32cyclictest352-21runrttasks10:53:280
9494999337,11cyclictest0-21swapper/209:22:002
9494999337,11cyclictest0-21swapper/209:22:002
9494999312,34cyclictest5544-21latency_hist09:36:382
9494999312,34cyclictest5544-21latency_hist09:36:382
947999934,36cyclictest8990-21munin-run11:31:350
947999934,36cyclictest8990-21munin-run11:31:350
947999923,32cyclictest4060-21latency_hist08:21:380
947999923,32cyclictest4060-21latency_hist08:21:380
947999922,34cyclictest15294-21cstates07:17:210
9494999042,10cyclictest0-21swapper/211:53:142
9494999042,10cyclictest0-21swapper/211:53:142
9494998910,35cyclictest2049-21apt-get08:16:492
9494998910,35cyclictest2049-21apt-get08:16:492
87772899,52sleep28869-21timerwakeupswit06:57:212
949499883,33cyclictest27699-21fschecks_count12:02:122
949499882,44cyclictest352-21runrttasks11:18:232
9494998669,11cyclictest26177-21latency_hist10:11:372
9489998659,16cyclictest2374-21systemd-journal11:16:361
948999864,57cyclictest15178-21apt-get07:16:471
87212858,52sleep18776-21timerandwakeup06:57:191
9489998458,20cyclictest29234-21latency_hist10:16:371
9494998361,13cyclictest352-21runrttasks10:51:452
9494998361,13cyclictest352-21runrttasks10:51:452
9489998262,14cyclictest2374-21systemd-journal08:01:361
948999824,68cyclictest30088-21/usr/sbin/munin08:03:011
9494998148,24cyclictest23203-21cron10:06:352
9494998148,24cyclictest23203-21cron10:06:352
949499813,47cyclictest15227-21kworker/u17:1+xprtiod11:42:132
9494998029,38cyclictest30130-21cut11:11:562
948999807,57cyclictest14739-21unin-run07:16:361
948999807,57cyclictest14739-21unin-run07:16:361
9494997860,12cyclictest9468-21cyclictest07:16:582
9489997849,23cyclictest23430-21fschecks_count09:11:581
9489997849,23cyclictest23430-21fschecks_count09:11:581
9489997847,24cyclictest4413-21fschecks_time08:21:561
9494997762,8cyclictest0-21swapper/209:12:102
9494997762,8cyclictest0-21swapper/209:12:102
9494997762,11cyclictest9468-21cyclictest11:39:232
948999774,52cyclictest6464-21seq12:21:341
9489997654,14cyclictest297-21systemd-logind08:16:361
9489997646,20cyclictest23419-21latency_hist10:06:391
9489997646,20cyclictest23419-21latency_hist10:06:391
9494997550,16cyclictest352-21runrttasks08:32:102
9494997528,8cyclictest181rcu_preempt09:42:082
9494997528,8cyclictest181rcu_preempt09:42:082
9489997553,15cyclictest9468-21cyclictest12:26:501
9494997456,11cyclictest21171-21gpgv11:51:382
9494997428,9cyclictest181rcu_preempt08:27:092
9494997419,25cyclictest13559-21grep07:11:562
9494997419,25cyclictest13559-21grep07:11:562
9489997351,16cyclictest11085-21ntpd12:06:141
9489997351,15cyclictest6475-21sh09:37:091
9489997348,14cyclictest0-21swapper/112:22:091
9489997348,14cyclictest0-21swapper/112:22:091
9494997256,11cyclictest7524-21mailstats12:22:072
9494997256,11cyclictest7524-21mailstats12:22:072
9494997254,11cyclictest277-21dbus-daemon08:01:362
9494997250,12cyclictest0-21swapper/212:16:372
9494997242,21cyclictest2328-21cron09:31:342
9489997253,14cyclictest3089-21kworker/u17:0-xprtiod11:26:551
9489997253,14cyclictest3089-21kworker/u17:0-xprtiod11:26:551
9489997248,16cyclictest9468-21cyclictest07:31:591
9489997244,14cyclictest0-21swapper/107:31:391
9489997226,7cyclictest301ktimers/110:37:021
9489997149,15cyclictest17721-21ntp_kernel_err09:02:031
9489997147,13cyclictest0-21swapper/111:01:381
9489997146,14cyclictest3550-21diskmemload12:16:361
948999713,50cyclictest9326-21ssh11:31:471
948999713,43cyclictest11482-21latency_hist09:46:381
948999713,43cyclictest11482-21latency_hist09:46:381
9489997125,38cyclictest291rcuc/110:07:091
9494997050,13cyclictest9468-21cyclictest10:20:082
9494997050,13cyclictest9468-21cyclictest10:20:082
9494997049,14cyclictest2252-21latency_hist08:16:382
949499704,29cyclictest15142-21memory09:52:022
949499704,29cyclictest15142-21memory09:52:022
948999705,36cyclictest657-21fschecks_count11:16:561
9489997049,14cyclictest10367-21latency_hist08:41:391
9489997045,15cyclictest9468-21cyclictest08:11:391
948999704,45cyclictest14606-21/usr/sbin/munin09:52:001
948999704,45cyclictest14606-21/usr/sbin/munin09:52:001
9489997024,7cyclictest301ktimers/110:32:041
948999702,46cyclictest5946-21fschecks_count08:26:561
9494996953,10cyclictest18903-21ntp_states07:27:052
9494996947,17cyclictest9468-21cyclictest11:32:102
9494996933,8cyclictest39-21ksoftirqd/210:56:562
9489996949,12cyclictest9468-21cyclictest11:26:381
9489996948,14cyclictest9468-21cyclictest12:10:221
9489996945,16cyclictest9468-21cyclictest12:01:341
9489996945,13cyclictest0-21swapper/111:46:591
948999693,37cyclictest2948-21fschecks_count09:31:561
948999693,37cyclictest2948-21fschecks_count09:31:561
9489996917,7cyclictest0-21swapper/107:07:021
9494996851,10cyclictest0-21swapper/211:01:512
9494996851,10cyclictest0-21swapper/211:01:512
9494996832,8cyclictest27173-21apt-get12:02:012
9489996848,14cyclictest25833-21latency_hist09:16:391
9489996844,16cyclictest9468-21cyclictest10:21:341
9489996844,16cyclictest9468-21cyclictest10:21:341
9489996840,19cyclictest31271-21sh09:25:071
9489996840,19cyclictest31271-21sh09:25:071
948999683,50cyclictest15052-21ssh10:46:481
948999683,44cyclictest3505-21sh10:26:581
9494996753,9cyclictest58-21kcompactd009:05:462
9494996748,13cyclictest10999-21modprobe07:06:352
9489996748,12cyclictest0-21swapper/109:31:351
9489996747,13cyclictest20718-21systemd-run10:56:361
9489996747,13cyclictest20718-21systemd-run10:56:361
9489996746,14cyclictest24177-21fschecks_count11:01:561
9489996746,14cyclictest24177-21fschecks_count11:01:561
948999674,43cyclictest14415-21ntp_states08:52:061
948999674,43cyclictest14415-21ntp_states08:52:061
948999674,42cyclictest15722-21fschecks_time08:56:571
9489996744,13cyclictest0-21swapper/111:07:101
948999673,43cyclictest21232-21grep09:07:141
845026718,30sleep30-21swapper/306:57:093
9494996651,10cyclictest32148-21kworker/u17:3-rpciod10:36:592
949499664,42cyclictest21782-21fschecks_count07:36:562
9494996640,12cyclictest0-21swapper/207:32:032
949499663,43cyclictest7234-21timerandwakeup11:27:092
949499663,43cyclictest7234-21timerandwakeup11:27:092
949499663,41cyclictest352-21runrttasks08:55:282
949499663,41cyclictest352-21runrttasks08:55:282
9494996634,16cyclictest30833-21ssh12:07:022
948999664,38cyclictest10186-21ntp_states07:02:041
9489996643,17cyclictest16772-21cpu07:21:511
9489996624,8cyclictest301ktimers/109:57:051
9489996620,8cyclictest301ktimers/108:51:351
9489996610,13cyclictest31-21ksoftirqd/110:43:261
9494996543,12cyclictest0-21swapper/210:27:082
9494996542,13cyclictest0-21swapper/210:46:522
949499653,42cyclictest6253-21ssh12:21:002
9494996534,22cyclictest8505-21ssh09:41:382
9489996546,11cyclictest8935-21latency_hist08:36:381
948999654,39cyclictest2693-21cstates08:17:191
948999654,39cyclictest2693-21cstates08:17:191
9489996540,18cyclictest9468-21cyclictest11:42:011
948999653,34cyclictest12239-21grep09:47:031
9494996448,11cyclictest9468-21cyclictest12:26:442
949499644,34cyclictest8938-21latency_hist10:36:382
9494996443,11cyclictest0-21swapper/211:21:592
949499643,43cyclictest12209-21/usr/sbin/munin10:41:522
948999644,40cyclictest27803-21idleruntime-cro07:56:351
948999644,40cyclictest27803-21idleruntime-cro07:56:351
9489996437,7cyclictest181rcu_preempt07:36:581
9494996347,7cyclictest0-21swapper/211:09:012
949499633,38cyclictest18286-21processes09:57:082
948999635,21cyclictest31-21ksoftirqd/111:39:171
948999633,43cyclictest24121-21grep07:42:101
948999633,31cyclictest25406-21processes07:47:071
949499624,43cyclictest9265-21tune2fs08:36:572
9494996241,12cyclictest0-21swapper/207:07:142
949499623,40cyclictest16970-21fschecks_count07:21:562
949499622,46cyclictest12860-21sshd08:47:072
949499622,43cyclictest352-21runrttasks07:50:402
949499622,40cyclictest28814-21modprobe09:21:342
948999622,41cyclictest11362-21switchtime08:42:091
9494996144,12cyclictest23394-21fschecks_count07:41:552
949499613,34cyclictest31718-21fschecks_count08:06:572
26002610,6sleep30-21swapper/311:20:193
950199593,40cyclictest2765-21chrt09:31:513
950199593,40cyclictest2765-21chrt09:31:513
950199584,39cyclictest6756-21taskset11:26:593
950199584,39cyclictest6756-21taskset11:26:593
950199574,37cyclictest10465-21taskset08:41:383
950199552,40cyclictest12397-21chrt12:31:343
9501995510,29cyclictest0-21swapper/311:51:533
9501995510,29cyclictest0-21swapper/311:51:533
949499554,36cyclictest4678-21ntp_kernel_pll_08:22:022
950199543,38cyclictest29557-21taskset10:16:503
950199543,38cyclictest29557-21taskset10:16:503
950199543,38cyclictest23599-21taskset11:01:303
950199542,38cyclictest19922-21taskset07:31:393
950199533,37cyclictest12640-21taskset09:47:113
950199533,36cyclictest15377-21taskset10:46:593
950199523,39cyclictest688-21chrt09:27:123
950199523,39cyclictest4742-21chrt10:28:343
950199523,38cyclictest759-21taskset10:22:343
950199523,35cyclictest14900-21chrt08:52:353
950199523,35cyclictest14900-21chrt08:52:353
950199522,40cyclictest28223-21taskset07:56:543
950199522,37cyclictest1477-21chrt12:12:053
950199513,38cyclictest6301-21chrt12:21:093
950199513,37cyclictest19732-21chrt09:06:203
950199513,36cyclictest26157-21taskset09:16:463
950199513,36cyclictest2363-21taskset08:16:393
950199513,36cyclictest15083-21taskset07:16:393
950199513,36cyclictest15083-21taskset07:16:393
950199513,34cyclictest17056-21chrt09:01:383
950199513,34cyclictest15800-21chrt11:42:033
950199513,34cyclictest11131-21chrt09:46:023
950199513,34cyclictest11131-21chrt09:46:023
950199513,33cyclictest30800-21chrt08:03:263
950199513,30cyclictest0-21swapper/308:16:493
950199513,30cyclictest0-21swapper/308:16:493
950199512,40cyclictest14703-21taskset11:40:573
950199504,30cyclictest12512-21chrt10:42:003
950199503,37cyclictest10360-21taskset10:37:343
950199503,33cyclictest27897-21taskset07:56:383
950199503,33cyclictest27897-21taskset07:56:383
950199502,36cyclictest27464-21chrt12:02:043
950199502,34cyclictest28687-21taskset10:15:163
950199494,35cyclictest24126-21taskset09:12:133
950199494,35cyclictest24126-21taskset09:12:133
950199493,33cyclictest21268-21chrt11:51:393
950199493,32cyclictest8109-21chrt09:40:553
950199493,32cyclictest23515-21taskset10:06:453
950199492,37cyclictest16656-21taskset09:54:493
950199492,37cyclictest16656-21taskset09:54:493
950199492,35cyclictest20383-21chrt09:06:573
950199492,33cyclictest32074-21chrt08:07:073
950199483,37cyclictest30700-21taskset12:06:593
950199483,36cyclictest5356-21taskset11:24:443
950199483,36cyclictest21802-21chrt10:02:353
950199483,36cyclictest21802-21chrt10:02:353
950199483,36cyclictest20649-21chrt10:56:313
950199483,36cyclictest20649-21chrt10:56:313
950199483,35cyclictest10183-21chrt11:32:103
950199482,36cyclictest20064-21chrt07:31:513
950199474,33cyclictest22085-21chrt07:37:023
950199473,36cyclictest917-21kworker/3:1+events08:31:513
950199473,35cyclictest31146-21chrt09:24:453
950199473,35cyclictest31146-21chrt09:24:453
950199473,34cyclictest0-21swapper/307:17:143
950199473,31cyclictest8858-21chrt10:36:373
950199472,35cyclictest18284-21chrt09:57:083
950199472,31cyclictest11786-21chrt07:06:553
950199463,34cyclictest31301-21chrt11:13:013
950199463,33cyclictest25847-21chrt11:58:073
950199462,34cyclictest26503-21chrt11:06:203
950199462,34cyclictest26503-21chrt11:06:203
950199462,33cyclictest5855-21taskset08:26:513
950199454,31cyclictest23662-21chrt07:42:003
950199453,31cyclictest13722-21chrt08:51:383
950199442,29cyclictest11219-21chrt08:42:063
950199433,30cyclictest16804-21taskset07:21:513
950199432,32cyclictest8659-21taskset12:24:253
950199432,32cyclictest8659-21taskset12:24:253
950199423,27cyclictest26876-21chrt11:06:413
950199402,25cyclictest24832-21chrt07:46:503
950199383,24cyclictest4169-21taskset08:21:453
950199383,23cyclictest11185-21chrt07:06:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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