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2026-09-23 - 04:32
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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 all highest latencies:
System rackbslot7.osadl.org (updated Wed Sep 23, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10197212411,79sleep010230-21fschecks_count19:04:060
10197212411,79sleep010230-21fschecks_count19:04:060
114959912036,74cyclictest0-21swapper/000:33:520
114959912036,74cyclictest0-21swapper/000:33:520
114959911533,64cyclictest0-21swapper/023:23:410
11495991112,101cyclictest0-21swapper/000:13:550
11495991112,101cyclictest0-21swapper/000:13:550
114959910934,67cyclictest0-21swapper/022:28:410
11495991083,97cyclictest0-21swapper/021:13:530
114959910838,57cyclictest0-21swapper/019:53:510
114959910837,54cyclictest7905-21if_eth020:34:020
114959910642,55cyclictest0-21swapper/022:53:420
114959910514,44cyclictest0-21swapper/022:34:020
114959910514,44cyclictest0-21swapper/022:34:020
114959910422,45cyclictest14650irq/292-2188000.ethernet00:30:280
115159910342,8cyclictest0-21swapper/200:10:192
11495991032,93cyclictest11840-21ssh23:38:530
114959910240,45cyclictest25387-21ssh23:07:370
114959910220,66cyclictest16542-21kworker/u17:2+xprtiod23:53:400
114959910048,46cyclictest14270-21open_files21:54:110
11495991003,80cyclictest8169-21ssh22:38:500
11495991002,62cyclictest12830-21rm21:52:200
11495999940,51cyclictest30174-21rm00:08:510
11515999837,19cyclictest26346-21cron19:53:392
1149599983,87cyclictest6285-21latency_hist00:23:390
1149599983,64cyclictest359-21snmpd23:10:560
11515999744,46cyclictest8128-21sh00:25:302
11515999736,13cyclictest0-21swapper/223:14:172
11515999735,21cyclictest2676-21kworker/u19:2+nfsiod21:34:372
11515999735,21cyclictest2676-21kworker/u19:2+nfsiod21:34:372
1149599974,73cyclictest19587-21latency_hist22:03:430
1149599973,87cyclictest0-21swapper/022:18:580
1149599973,87cyclictest0-21swapper/021:38:510
1149599973,80cyclictest26974-21apt-get00:03:560
1149599973,56cyclictest26500-21dpkg00:03:400
1149599963,79cyclictest22718-21apt-get22:08:560
1149599963,60cyclictest9238-21latency_hist00:28:410
1149599963,59cyclictest4371-21apt-get20:24:010
11495999632,57cyclictest0-21swapper/021:19:190
11515999540,9cyclictest0-21swapper/223:35:592
1151599953,37cyclictest12660-21cut20:49:022
1151599953,34cyclictest9865-21grep20:39:132
1151599953,34cyclictest9865-21grep20:39:132
11507999548,40cyclictest0-21swapper/121:18:391
1151599944,34cyclictest343-21runrttasks00:05:202
1151599944,34cyclictest13707-21/usr/sbin/munin19:14:052
1151599943,39cyclictest5302-21grep20:24:342
1151599943,39cyclictest23355-21fschecks_count23:04:022
1151599943,36cyclictest6299-21modprobe00:23:392
1151599943,35cyclictest31585-21ssh22:23:422
1151599943,35cyclictest25921-21fschecks_count22:14:012
1151599943,35cyclictest25921-21fschecks_count22:14:012
1151599943,35cyclictest24910-21latency_hist21:18:432
1151599943,34cyclictest28957-21grep19:59:392
1151599943,33cyclictest22544-21latency_hist22:08:432
1151599943,33cyclictest22544-21latency_hist22:08:432
1151599943,32cyclictest4261-21apt-key20:23:432
1151599943,32cyclictest4261-21apt-key20:23:432
1151599942,37cyclictest11388-21fschecks_count22:44:022
1151599942,37cyclictest11388-21fschecks_count22:44:022
11495999438,50cyclictest0-21swapper/023:18:420
1149599943,78cyclictest0-21swapper/019:28:510
1149599943,78cyclictest0-21swapper/019:28:510
11495999436,48cyclictest0-21swapper/019:48:420
11495999433,54cyclictest0-21swapper/021:28:440
238472930,7sleep30-21swapper/321:16:263
1151599934,42cyclictest18636-21diskmemload21:59:182
1151599934,36cyclictest12508-21/usr/sbin/munin00:34:002
1151599934,36cyclictest12508-21/usr/sbin/munin00:34:002
1151599934,34cyclictest15557-21latency_hist20:58:432
1151599934,34cyclictest15557-21latency_hist20:58:432
11515999334,8cyclictest0-21swapper/219:58:392
1151599933,38cyclictest3559-21latency_hist00:18:442
1151599933,38cyclictest3559-21latency_hist00:18:442
1151599933,37cyclictest343-21runrttasks21:29:492
1151599933,36cyclictest11668-21unixbench_multi21:49:162
11515999332,9cyclictest0-21swapper/223:11:162
1151599932,37cyclictest14234-21ntpq21:54:082
1151599932,37cyclictest13074-21latency_hist19:13:412
1151599932,37cyclictest13074-21latency_hist19:13:412
1151599932,36cyclictest16810-21idleruntime-cro22:53:392
1149599936,79cyclictest0-21swapper/022:14:020
1149599936,79cyclictest0-21swapper/022:14:020
1149599934,84cyclictest0-21swapper/022:04:000
1149599934,84cyclictest0-21swapper/022:04:000
1149599933,61cyclictest16721-21ssh23:46:350
11495999334,51cyclictest0-21swapper/022:44:170
11495999334,51cyclictest0-21swapper/022:44:170
11495999332,51cyclictest0-21swapper/021:34:130
11495999332,51cyclictest0-21swapper/021:34:130
11495999332,49cyclictest0-21swapper/019:13:430
11495999319,48cyclictest0-21swapper/023:29:540
11495999319,48cyclictest0-21swapper/023:29:540
1151599924,37cyclictest23980-21cut23:59:022
1151599924,37cyclictest18050-21ssh22:54:182
1151599924,35cyclictest8343-21timerandwakeup20:34:132
11515999237,10cyclictest0-21swapper/223:48:432
1151599923,41cyclictest25568-21ntpq21:19:102
1151599923,40cyclictest1981-21latency_hist22:28:442
1151599923,36cyclictest12484-21ssh23:39:112
1151599923,36cyclictest11626-21grep19:08:452
1151599923,36cyclictest11626-21grep19:08:452
1151599923,35cyclictest8480-21modprobe23:33:392
1151599923,35cyclictest8480-21modprobe23:33:392
1151599923,34cyclictest17855-21unixbench_multi19:24:162
1151599923,34cyclictest11749-21unixbench_multi20:44:192
1151599923,33cyclictest5392-21fschecks_count22:34:012
1151599923,33cyclictest5392-21fschecks_count22:34:012
11515999227,13cyclictest0-21swapper/221:04:162
11515999227,13cyclictest0-21swapper/221:04:162
11495999237,47cyclictest0-21swapper/020:59:160
11495999234,49cyclictest6455-21ntp_kernel_err20:29:080
11495999230,56cyclictest20752-21sh22:59:120
11495999217,54cyclictest0-21swapper/021:10:130
129802910,6sleep30-21swapper/320:49:123
1151599914,35cyclictest21068-21ssh22:59:172
1151599914,33cyclictest2511-21/usr/sbin/munin22:30:272
1151599914,33cyclictest23413-21latency_hist23:58:442
1151599913,37cyclictest5648-21latency_hist23:28:432
1151599913,37cyclictest25587-21ls22:13:432
1151599913,34cyclictest30810-21grep20:04:142
1151599913,34cyclictest27988-21/usr/sbin/munin21:24:152
1151599913,34cyclictest27988-21/usr/sbin/munin21:24:152
1151599913,33cyclictest9536-21/usr/sbin/munin00:28:552
11507999147,37cyclictest14482-21idleruntime22:49:031
11495999164,17cyclictest21625-21latency_hist19:38:420
11495999134,51cyclictest0-21swapper/020:09:140
11495999128,55cyclictest0-21swapper/022:28:580
11495999114,48cyclictest0-21swapper/020:54:110
11495999114,48cyclictest0-21swapper/020:54:110
1151599903,39cyclictest5272-21proc_pri21:39:112
1151599903,35cyclictest8463-21fschecks_time22:39:002
1151599903,32cyclictest16398-21grep20:59:142
1151599902,35cyclictest16790-21latency_hist19:23:422
1149599903,80cyclictest0-21swapper/019:23:530
1149599903,57cyclictest15361-21chrt19:18:500
11495999027,56cyclictest0-21swapper/020:39:080
11495999027,56cyclictest0-21swapper/020:39:080
1149599902,73cyclictest10826-21apt-get20:43:580
1149599902,58cyclictest29853-21taskset21:26:210
1149599902,58cyclictest29853-21taskset21:26:210
11495999025,55cyclictest0-21swapper/023:35:170
1151599895,32cyclictest6039-21cpuspeed20:28:572
1151599894,31cyclictest21190-21ssh21:12:262
1151599893,35cyclictest23353-21grep19:43:432
1151599892,34cyclictest18989-21sort19:29:052
1151599892,34cyclictest18989-21sort19:29:052
1149599893,52cyclictest0-21swapper/021:04:120
1149599893,52cyclictest0-21swapper/021:04:120
1151599885,33cyclictest343-21runrttasks21:48:352
1151599882,36cyclictest20664-21grep19:34:092
1151599882,36cyclictest18074-21tune2fs23:49:022
11495998860,20cyclictest26805-21apt-key19:53:440
1149599884,72cyclictest28371-21apt-get19:59:290
11495998827,55cyclictest0-21swapper/022:54:170
1151599873,34cyclictest31705-21/usr/sbin/munin20:08:562
1151599873,33cyclictest23678-21fschecks_time19:44:012
11507998740,38cyclictest0-21swapper/121:39:111
1150799873,31cyclictest30457-21cstates00:10:061
11495998734,46cyclictest0-21swapper/021:43:510
11495998725,51cyclictest12522-21awk20:48:570
1151599863,34cyclictest32432-21idleruntime23:19:032
1149599863,53cyclictest3832-21ssh23:24:360
11495998616,60cyclictest1358-21netstat20:14:070
1151599853,38cyclictest1755-21timerwakeupswit20:14:162
1150799853,29cyclictest21889-21latency_hist21:13:431
1150799853,27cyclictest23742-21/usr/sbin/munin23:59:151
11507998529,48cyclictest0-21swapper/121:23:581
11507998529,48cyclictest0-21swapper/121:23:581
11507998515,23cyclictest29003-21sort22:19:071
1150799846,27cyclictest27035-21ssh00:04:001
1150799843,31cyclictest18340-21ssh23:49:081
1150799843,28cyclictest25952-21fschecks_time22:14:011
1150799843,28cyclictest25952-21fschecks_time22:14:011
1150799842,29cyclictest23658-21latency_hist23:58:431
11507998414,24cyclictest24747-21modprobe19:48:391
1149599843,74cyclictest23195-21wc19:43:410
1149599843,73cyclictest4054-21cut20:23:420
1149599843,73cyclictest4054-21cut20:23:420
1060628430,35sleep30-21swapper/319:04:223
1060628430,35sleep30-21swapper/319:04:223
11507998338,37cyclictest6333-21sh23:29:521
11507998338,37cyclictest6333-21sh23:29:521
1150799833,33cyclictest1982-21apt-get22:28:391
1150799833,28cyclictest32083-21unixbench_singl21:29:161
1150799833,27cyclictest11683-21sed21:49:171
1150799833,27cyclictest10959-21sort22:43:421
1150799832,33cyclictest14804-21apt-get23:43:521
1150799832,28cyclictest5981-21taskset20:28:521
11507998315,22cyclictest7684-21sh22:38:181
11507998315,22cyclictest7684-21sh22:38:181
1150799824,27cyclictest7594-21/usr/sbin/munin21:43:581
1150799823,31cyclictest9578-21ssh00:28:521
1150799823,31cyclictest649-21fschecks_count00:14:021
1150799823,31cyclictest649-21fschecks_count00:14:021
1150799823,30cyclictest13542-21unixbench_multi00:34:161
1150799823,30cyclictest13542-21unixbench_multi00:34:161
1150799823,29cyclictest30334-21fschecks_time20:04:021
1150799823,28cyclictest32407-21/usr/sbin/munin20:09:131
11507998228,47cyclictest31759-21idleruntime-cro23:18:391
1150799822,31cyclictest8082-21seq20:34:061
1150799822,23cyclictest25026-21taskset21:18:541
11507998218,56cyclictest0-21swapper/119:55:111
11507998216,22cyclictest17606-21cat21:59:181
11495998225,49cyclictest23486-21sh23:58:410
1150799813,30cyclictest20805-21awk19:34:141
1150799813,29cyclictest662-21cron23:13:391
1150799813,29cyclictest14511-21timerandwakeup19:14:171
1150799813,29cyclictest11783-21/usr/sbin/munin23:39:171
1150799813,28cyclictest9409-21fschecks_count20:39:011
1150799813,28cyclictest9409-21fschecks_count20:39:011
1150799813,28cyclictest9043-21fschecks_count23:34:011
1150799813,27cyclictest12397-21runrttasks22:44:411
1150799813,27cyclictest12397-21runrttasks22:44:411
1150799812,30cyclictest20097-21/usr/sbin/munin22:58:571
1150799812,29cyclictest19968-21ssh22:58:431
11507998113,20cyclictest4408-21sh23:26:131
1150799804,27cyclictest17682-21switchtime19:24:141
1150799803,33cyclictest343-21runrttasks21:08:001
1150799803,33cyclictest343-21runrttasks21:08:001
1150799803,29cyclictest343-21runrttasks20:53:581
1150799803,29cyclictest343-21runrttasks20:53:581
1150799803,29cyclictest3418-21tail20:19:161
1150799803,29cyclictest3418-21tail20:19:161
1150799803,28cyclictest343-21runrttasks23:06:591
1150799803,28cyclictest22726-21unixbench_multi19:39:161
11507998016,22cyclictest14254-21diskmemload21:54:101
11507998013,24cyclictest301ktimers/122:09:381
1150799794,24cyclictest29448-21grep19:59:491
11507997935,37cyclictest0-21swapper/119:09:021
11507997935,37cyclictest0-21swapper/119:09:021
1150799793,32cyclictest25511-21ntpq19:49:081
1150799793,31cyclictest2132-21taskset23:23:131
1150799793,28cyclictest13776-21latency_hist20:53:431
1150799793,27cyclictest10807-21/usr/sbin/munin20:44:061
1150799793,26cyclictest19936-21fschecks_count22:04:011
1150799793,26cyclictest19936-21fschecks_count22:04:011
1150799793,26cyclictest16137-21timerandwakeup19:19:151
1150799793,24cyclictest3115-21apt-get00:18:541
1150799793,24cyclictest1565-21runrttasks21:33:501
1150799793,24cyclictest1565-21runrttasks21:33:501
11507997929,44cyclictest0-21swapper/100:28:411
1149599792,46cyclictest14244-21ntpq19:14:100
11507997835,35cyclictest0-21swapper/120:28:391
1150799783,21cyclictest16323-21runrttasks20:59:131
11507997824,49cyclictest0-21swapper/122:30:191
11507997816,22cyclictest18635-21ls19:28:561
11507997816,22cyclictest18635-21ls19:28:561
1149599783,65cyclictest0-21swapper/020:03:510
1150799773,29cyclictest2417-21latency_hist20:18:421
1149599773,64cyclictest12168-21ntpq19:09:070
11507997517,19cyclictest11542-21latency_hist19:08:441
11507997517,19cyclictest11542-21latency_hist19:08:441
1151999673,49cyclictest25708-21taskset22:13:543
1151999673,49cyclictest25708-21taskset22:13:543
1151999663,50cyclictest3145-21chrt00:18:393
1151999663,50cyclictest3145-21chrt00:18:393
1151999662,48cyclictest21795-21taskset23:54:173
1151999654,47cyclictest4745-21taskset22:33:253
1151999653,47cyclictest24105-21taskset19:44:123
1151999643,48cyclictest8563-21chrt23:33:413
1151999643,48cyclictest8563-21chrt23:33:413
1151999642,47cyclictest4325-21taskset23:25:593
1151999642,45cyclictest17643-21taskset22:54:093
1151999633,39cyclictest0-21swapper/300:09:183
1151999626,42cyclictest17890-21chrt19:24:163
1151999623,45cyclictest23343-21taskset22:09:163
1151999622,44cyclictest3984-21chrt20:23:413
1151999622,44cyclictest3984-21chrt20:23:413
1151999613,45cyclictest7140-21taskset22:36:463
1151999613,45cyclictest7140-21taskset22:36:463
1151999613,45cyclictest25659-21chrt21:19:143
1151999613,44cyclictest9733-21chrt00:28:563
1151999613,44cyclictest27992-21chrt00:05:153
1151999613,44cyclictest16298-21chrt23:45:253
1151999603,45cyclictest32257-21chrt23:18:583
1151999603,44cyclictest28318-21taskset19:58:463
1151999603,43cyclictest14912-21chrt19:16:473
1151999603,43cyclictest14899-21taskset21:54:453
1151999603,42cyclictest22255-21chrt19:39:063
1151999602,46cyclictest30892-21taskset23:16:183
1151999602,45cyclictest7057-21taskset20:30:293
1151999602,44cyclictest12537-21chrt00:33:513
1151999602,44cyclictest12537-21chrt00:33:513
1151999593,43cyclictest9653-21chrt22:40:233
1151999593,43cyclictest9316-21chrt23:34:063
1151999593,42cyclictest422-21taskset20:11:263
1151999593,41cyclictest25244-21chrt00:00:213
1151999592,45cyclictest31093-21chrt20:04:173
1151999592,45cyclictest19019-21chrt21:09:003
1151999592,44cyclictest2100-21taskset20:17:053
1151999592,44cyclictest11331-21chrt22:43:593
1151999592,44cyclictest11331-21chrt22:43:593
1151999592,43cyclictest11915-21taskset21:49:463
1151999592,42cyclictest17794-21chrt21:04:103
1151999592,42cyclictest17794-21chrt21:04:103
1151999592,40cyclictest0-21swapper/322:03:543
1151999592,40cyclictest0-21swapper/322:03:543
1151999583,43cyclictest13619-21chrt23:41:153
1151999583,42cyclictest845-21chrt22:25:333
1151999583,42cyclictest31036-21taskset21:28:553
1151999583,42cyclictest30644-21chrt21:28:343
1151999583,42cyclictest30644-21chrt21:28:343
1151999583,42cyclictest22327-21chrt23:02:243
1151999583,42cyclictest20461-21chrt19:34:043
1151999583,41cyclictest26149-21taskset19:51:053
1151999583,41cyclictest18717-21taskset19:28:583
1151999583,41cyclictest18717-21taskset19:28:583
1151999582,44cyclictest15369-21chrt19:18:533
1151999582,43cyclictest9547-21chrt21:46:343
1151999582,43cyclictest30519-21taskset22:21:123
1151999582,43cyclictest20280-21chrt23:53:153
1151999582,42cyclictest9220-21chrt20:38:513
1151999582,42cyclictest9220-21chrt20:38:513
1151999582,42cyclictest8138-21chrt00:25:323
1151999582,42cyclictest4770-21chrt21:38:563
1151999582,42cyclictest11659-21chrt19:08:453
1151999582,42cyclictest11659-21chrt19:08:453
1151999574,40cyclictest15057-21chrt20:54:383
1151999574,40cyclictest15057-21chrt20:54:383
1151999573,42cyclictest8387-21chrt20:34:133
1151999573,42cyclictest18038-21chrt22:00:003
1151999573,42cyclictest15676-21taskset20:58:523
1151999573,41cyclictest14467-21chrt22:49:023
1151999572,44cyclictest28690-21chrt19:59:313
1151999572,41cyclictest4384-21taskset20:23:583
1151999563,40cyclictest11109-21chrt20:44:053
1151999562,42cyclictest26077-21chrt23:08:523
1151999553,42cyclictest3392-21chrt21:36:163
1151999553,42cyclictest3392-21chrt21:36:163
1151999553,37cyclictest0-21swapper/300:19:163
1151999552,41cyclictest23523-21chrt23:04:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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