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2026-08-20 - 01:51
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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
Characteristics of all highest latencies:
System rack1slot1.osadl.org (updated Thu Aug 20, 2026 00:45:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
130062206169,24sleep00-21swapper/019:06:400
129732201160,27sleep20-21swapper/219:06:122
129542201160,26sleep30-21swapper/319:05:573
111522198161,24sleep10-21swapper/119:05:071
91052740,0sleep20-21swapper/220:05:162
293022170,1sleep26402-21diskmemload21:40:162
13344991412,1cyclictest9-21ksoftirqd/000:05:000
13360991311,1cyclictest28-21ksoftirqd/219:20:002
13360991211,1cyclictest28-21ksoftirqd/222:15:012
13360991211,1cyclictest28-21ksoftirqd/221:55:002
13360991210,1cyclictest28-21ksoftirqd/220:20:012
13344991211,1cyclictest9-21ksoftirqd/022:40:000
1336999119,1cyclictest35-21ksoftirqd/300:15:133
13360991111,0cyclictest0-21swapper/222:36:482
1336099110,10cyclictest0-21swapper/222:23:532
1334499113,4cyclictest7794-21cat20:05:000
141862100,0sleep20-21swapper/223:36:242
1336999108,1cyclictest35-21ksoftirqd/322:40:093
1336099109,1cyclictest28-21ksoftirqd/223:50:002
1336099100,10cyclictest0-21swapper/222:05:152
1336099100,10cyclictest0-21swapper/221:27:022
1336099100,10cyclictest0-21swapper/219:30:172
1334499109,1cyclictest9-21ksoftirqd/023:15:010
1334499109,1cyclictest9-21ksoftirqd/023:00:010
1334499100,9cyclictest22610-21sh23:03:460
133699998,1cyclictest35-21ksoftirqd/300:35:013
133699993,1cyclictest554-21dbus-daemon00:00:003
133609998,1cyclictest28-21ksoftirqd/221:58:042
133609998,1cyclictest28-21ksoftirqd/219:40:002
133609998,1cyclictest28-21ksoftirqd/200:20:002
133609998,1cyclictest28-21ksoftirqd/200:05:172
133609997,1cyclictest28-21ksoftirqd/222:55:152
133609997,1cyclictest28-21ksoftirqd/222:45:002
133609997,1cyclictest28-21ksoftirqd/221:30:152
133609997,1cyclictest28-21ksoftirqd/219:50:122
133609990,9cyclictest0-21swapper/222:41:302
133539990,8cyclictest0-21swapper/122:51:561
133539990,8cyclictest0-21swapper/120:35:201
133449999,0cyclictest9-21ksoftirqd/022:15:000
133449998,1cyclictest9-21ksoftirqd/023:40:150
133449998,1cyclictest9-21ksoftirqd/022:35:010
133449991,4cyclictest31610-21latency_hist21:45:000
133449991,2cyclictest16596-21/usr/sbin/munin19:15:140
133449990,1cyclictest0-21swapper/023:50:410
133699986,1cyclictest11301-21snmpd23:25:253
133699986,1cyclictest11301-21snmpd22:05:473
133699986,1cyclictest11301-21snmpd00:03:303
133699985,2cyclictest13338-21cyclictest23:19:493
133699982,4cyclictest20422-21apt-get22:15:113
133699981,4cyclictest12687-21/usr/sbin/munin20:15:143
133699980,8cyclictest0-21swapper/300:12:183
133699980,4cyclictest0-21swapper/323:10:103
133699980,3cyclictest0-21swapper/322:55:123
133699980,0cyclictest0-21swapper/300:37:033
133609988,0cyclictest28-21ksoftirqd/222:00:142
133609988,0cyclictest0-21swapper/200:25:032
133609987,1cyclictest28-21ksoftirqd/223:15:122
133609987,1cyclictest28-21ksoftirqd/223:00:002
133609987,1cyclictest28-21ksoftirqd/221:00:132
133609987,1cyclictest28-21ksoftirqd/200:00:222
133609987,0cyclictest28-21ksoftirqd/223:25:132
133609986,1cyclictest61650irq/122-eno123:34:122
133609986,1cyclictest61650irq/122-eno120:30:142
133609986,1cyclictest61650irq/122-eno119:50:012
133609986,1cyclictest61650irq/122-eno100:13:372
133609986,1cyclictest28-21ksoftirqd/222:15:142
133609986,1cyclictest28-21ksoftirqd/221:10:142
133609985,3cyclictest28-21ksoftirqd/223:40:152
133609985,1cyclictest1641-21ssh21:46:512
133609983,2cyclictest240-21systemd-journal21:00:012
133539980,4cyclictest0-21swapper/120:25:121
133449987,1cyclictest5529-21/usr/sbin/munin22:40:100
133449987,0cyclictest9-21ksoftirqd/000:20:130
133449981,6cyclictest20746-21seq22:15:120
133449980,7cyclictest8757-21ssh21:57:120
133449980,7cyclictest29047-21ssh23:59:120
133449980,7cyclictest15377-21ssh22:05:520
133449980,7cyclictest0-21swapper/023:25:140
133449980,6cyclictest240-21systemd-journal23:20:000
133449980,5cyclictest21703-21ssh00:35:110
133449980,4cyclictest30677-21latency_hist22:30:000
133449980,1cyclictest20136-21ssh21:27:310
133699976,1cyclictest35-21ksoftirqd/321:04:523
133699976,1cyclictest35-21ksoftirqd/319:15:003
133699976,1cyclictest11301-21snmpd22:12:233
133699975,1cyclictest35-21ksoftirqd/320:35:003
133699975,1cyclictest17595-21ssh21:25:043
133699975,1cyclictest11301-21snmpd19:41:073
133699975,1cyclictest11253-21ssh22:46:043
133699974,1cyclictest13650irq/124-ahci[0020:44:553
133699971,4cyclictest6402-21diskmemload00:25:153
133699971,3cyclictest0-21swapper/322:30:533
133699970,6cyclictest1-21systemd20:04:553
133699970,5cyclictest0-21swapper/321:57:103
133699970,4cyclictest0-21swapper/322:35:093
133699970,3cyclictest0-21swapper/323:20:103
133699970,0cyclictest0-21swapper/321:50:283
133609976,1cyclictest61650irq/122-eno123:05:182
133609976,1cyclictest61650irq/122-eno119:10:212
133609976,1cyclictest28-21ksoftirqd/222:25:172
133609976,1cyclictest28-21ksoftirqd/220:25:002
133609975,1cyclictest61650irq/122-eno123:50:152
133609975,1cyclictest61650irq/122-eno100:20:132
133609975,1cyclictest28-21ksoftirqd/219:40:132
133609975,1cyclictest11301-21snmpd23:24:432
133609975,1cyclictest11301-21snmpd21:22:342
133609975,1cyclictest11301-21snmpd21:18:452
133609975,1cyclictest11301-21snmpd20:01:592
133609974,1cyclictest294-21systemd-udevd22:51:082
133609974,1cyclictest294-21systemd-udevd20:47:082
133609974,1cyclictest294-21systemd-udevd19:21:082
133609973,2cyclictest240-21systemd-journal20:36:082
133609971,6cyclictest0-21swapper/200:31:182
133609970,5cyclictest561-21nscd21:35:192
133609970,4cyclictest11301-21snmpd23:58:242
133539971,6cyclictest0-21swapper/123:24:341
133539971,6cyclictest0-21swapper/121:59:081
133539970,7cyclictest0-21swapper/122:15:181
133539970,6cyclictest0-21swapper/120:05:141
133539970,2cyclictest0-21swapper/100:00:141
133449976,1cyclictest11301-21snmpd19:32:590
133449975,1cyclictest9-21ksoftirqd/020:50:010
133449975,1cyclictest9-21ksoftirqd/000:10:280
133449975,1cyclictest11831-21ssh22:00:450
133449973,3cyclictest1-21systemd21:03:510
133449970,7cyclictest0-21swapper/020:15:150
133449970,6cyclictest6402-21diskmemload00:30:080
133449970,6cyclictest5410-21awk20:00:000
133449970,6cyclictest27791-21taskset19:35:250
133449970,6cyclictest17943-21diskstats20:25:140
133449970,6cyclictest13286-21df_inode22:50:130
133449970,6cyclictest10141-21if_eno122:45:160
133449970,6cyclictest0-21swapper/021:50:180
133449970,6cyclictest0-21swapper/021:45:180
133449970,1cyclictest9588-21ssh21:14:140
133449970,1cyclictest22466-21chrt19:25:170
133449970,1cyclictest1794-21tr00:05:190
133449970,1cyclictest16542-21ssh00:25:320
133449970,1cyclictest15690-21perf19:15:000
133449970,1cyclictest15444-21cat23:40:000
133449970,1cyclictest10065-21ssh00:17:190
133449970,1cyclictest0-21swapper/023:30:130
133449970,1cyclictest0-21swapper/021:30:180
27578260,0sleep10-21swapper/120:45:121
133699965,1cyclictest8871-21cat20:05:163
133699965,1cyclictest8636-21ssh21:11:223
133699965,1cyclictest561-21nscd23:46:573
133699965,1cyclictest24810-21ssh21:35:083
133699965,1cyclictest12645-21ssh21:17:323
133699965,1cyclictest12112-21ssh23:35:113
133699965,1cyclictest11301-21snmpd21:40:253
133699965,1cyclictest11301-21snmpd20:24:123
133699965,1cyclictest11087-21ntpq22:00:173
133699964,1cyclictest6402-21diskmemload21:30:163
133699964,1cyclictest35-21ksoftirqd/320:00:003
133699964,1cyclictest29887-21ssh22:27:283
133699964,1cyclictest25083-21ssh23:52:403
133699964,1cyclictest11301-21snmpd21:05:513
133699963,1cyclictest240-21systemd-journal20:50:003
133699962,1cyclictest548-21systemd-logind00:07:083
133699962,1cyclictest23680-21/usr/sbin/munin19:30:183
133699961,3cyclictest0-21swapper/323:00:113
133699960,4cyclictest0-21swapper/322:50:313
133699960,3cyclictest0-21swapper/320:25:143
133699960,1cyclictest0-21swapper/323:30:093
133699960,1cyclictest0-21swapper/321:45:093
133699960,0cyclictest0-21swapper/300:21:363
133609966,0cyclictest61650irq/122-eno120:25:122
133609965,1cyclictest61650irq/122-eno122:30:152
133609965,1cyclictest61650irq/122-eno120:40:152
133609965,1cyclictest28-21ksoftirqd/220:50:002
133609965,1cyclictest28-21ksoftirqd/200:35:132
133609965,0cyclictest28-21ksoftirqd/219:55:002
133609964,1cyclictest28-21ksoftirqd/221:05:122
133609964,1cyclictest11301-21snmpd20:11:532
133609963,1cyclictest240-21systemd-journal23:10:002
133609962,2cyclictest0-21swapper/219:25:112
133539966,0cyclictest0-21swapper/123:06:391
133539965,1cyclictest0-21swapper/122:26:201
133539961,5cyclictest0-21swapper/123:30:041
133539960,6cyclictest0-21swapper/123:56:141
133539960,6cyclictest0-21swapper/123:16:501
133539960,6cyclictest0-21swapper/123:01:101
133539960,6cyclictest0-21swapper/122:46:361
133539960,6cyclictest0-21swapper/122:41:361
133539960,6cyclictest0-21swapper/121:40:151
133539960,6cyclictest0-21swapper/119:45:041
133539960,5cyclictest0-21swapper/123:37:411
133539960,5cyclictest0-21swapper/100:30:181
133539960,4cyclictest0-21swapper/121:27:231
133539960,3cyclictest0-21swapper/120:50:161
133539960,2cyclictest0-21swapper/100:12:351
133449965,1cyclictest9-21ksoftirqd/023:05:000
133449965,1cyclictest11301-21snmpd20:10:080
133449964,1cyclictest25084-21tr21:35:130
133449961,4cyclictest10660-21fschecks_count21:15:130
133449960,6cyclictest0-21swapper/023:21:180
133449960,6cyclictest0-21swapper/021:05:190
133449960,6cyclictest0-21swapper/020:42:080
133449960,6cyclictest0-21swapper/020:33:410
133449960,6cyclictest0-21swapper/020:22:290
133449960,6cyclictest0-21swapper/020:05:330
133449960,6cyclictest0-21swapper/019:43:550
133449960,6cyclictest0-21swapper/019:20:110
133449960,5cyclictest21911-21apt-get20:35:010
133449960,5cyclictest0-21swapper/019:48:190
133449960,2cyclictest6402-21diskmemload22:20:150
133449960,1cyclictest0-21swapper/021:20:130
133449960,0cyclictest0-21swapper/023:45:190
133449960,0cyclictest0-21swapper/019:50:120
133699955,0cyclictest0-21swapper/323:40:113
133699954,1cyclictest16726-21ssh21:23:073
133699954,1cyclictest11301-21snmpd19:37:283
133699953,1cyclictest11301-21snmpd20:55:393
133699953,1cyclictest11301-21snmpd19:15:093
133699952,1cyclictest240-21systemd-journal19:46:583
133699952,1cyclictest240-21systemd-journal19:22:583
133699951,2cyclictest1211-21entropy19:50:133
133699951,1cyclictest25495-21grep22:20:203
133699951,1cyclictest0-21swapper/320:35:013
133699950,5cyclictest0-21swapper/320:12:263
133699950,3cyclictest240-21systemd-journal20:54:553
133699950,3cyclictest23518-21hostname23:05:113
133539955,0cyclictest0-21swapper/122:10:121
133539955,0cyclictest0-21swapper/119:15:581
133539954,1cyclictest0-21swapper/119:40:201
133539952,3cyclictest0-21swapper/120:13:561
133539951,3cyclictest0-21swapper/121:35:131
133539951,2cyclictest0-21swapper/123:50:121
133539951,2cyclictest0-21swapper/122:38:191
133539951,2cyclictest0-21swapper/121:00:141
133539951,2cyclictest0-21swapper/100:20:151
133539951,1cyclictest0-21swapper/123:10:101
133539951,1cyclictest0-21swapper/121:10:141
133539950,5cyclictest0-21swapper/123:41:501
133539950,5cyclictest0-21swapper/120:20:151
133539950,3cyclictest0-21swapper/122:05:141
133539950,3cyclictest0-21swapper/121:05:111
133539950,2cyclictest0-21swapper/122:04:401
133539950,2cyclictest0-21swapper/121:51:291
133539950,2cyclictest0-21swapper/121:46:091
133539950,2cyclictest0-21swapper/121:31:341
133539950,2cyclictest0-21swapper/121:22:511
133539950,2cyclictest0-21swapper/100:15:121
133539950,1cyclictest0-21swapper/122:55:371
133539950,1cyclictest0-21swapper/120:55:111
133539950,1cyclictest0-21swapper/120:30:161
133539950,1cyclictest0-21swapper/119:10:181
133539950,1cyclictest0-21swapper/100:29:131
133539950,0cyclictest0-21swapper/119:50:111
133449954,1cyclictest9-21ksoftirqd/020:50:000
133449951,1cyclictest0-21swapper/020:55:110
133699940,3cyclictest21331-21apt-get19:25:113
133539944,0cyclictest0-21swapper/119:22:401
133539941,2cyclictest0-21swapper/122:20:201
133539941,1cyclictest0-21swapper/100:35:111
133539940,4cyclictest0-21swapper/120:18:381
133539940,3cyclictest0-21swapper/123:25:391
133539940,3cyclictest0-21swapper/119:38:491
133539940,2cyclictest0-21swapper/123:45:161
133539940,2cyclictest0-21swapper/122:30:161
133539940,1cyclictest0-21swapper/121:15:171
133539940,1cyclictest0-21swapper/119:57:561
133539940,1cyclictest0-21swapper/119:30:171
133539940,0cyclictest0-21swapper/120:44:001
133539940,0cyclictest0-21swapper/100:06:201
133539930,3cyclictest0-21swapper/119:25:111
133539930,1cyclictest0-21swapper/120:00:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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