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2026-04-19 - 10:30
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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 376 highest latencies:
System rackaslot8.osadl.org (updated Sun Apr 19, 2026 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228952315289,17sleep20-21swapper/219:08:272
229472289228,20sleep10-21swapper/119:09:051
229412259231,18sleep00-21swapper/019:09:000
210402257230,18sleep30-21swapper/319:05:053
41472630,0sleep00-21swapper/022:03:170
56852600,0sleep00-21swapper/022:43:110
301202600,0sleep20-21swapper/221:40:002
47302580,1sleep30-21swapper/322:03:453
18652580,0sleep30-21swapper/300:19:153
30312570,0sleep10-21swapper/120:45:181
22972560,0sleep20-21swapper/222:01:522
165172550,0sleep00-21swapper/023:48:520
165172550,0sleep00-21swapper/023:48:520
3602530,0sleep00-21swapper/021:21:290
193472530,0sleep20-21swapper/221:13:492
105132520,0sleep10-21swapper/121:47:181
105132520,0sleep10-21swapper/121:47:181
210752210,0sleep00-21swapper/021:34:310
225312190,0sleep00-21swapper/023:52:090
219882160,0sleep20-21swapper/221:15:142
217542160,0sleep1658-21snmpd21:15:131
200222150,0sleep10-21swapper/121:14:201
191752150,0sleep00-21swapper/022:31:330
165002150,0sleep00-21swapper/023:29:150
207032140,0sleep30-21swapper/321:34:133
229352130,0sleep00-21swapper/021:55:130
2314999110,10cyclictest11729-21dump-pmu-power19:55:022
19422110,0sleep20-21swapper/223:59:562
45112100,0sleep10-21swapper/123:40:581
231439992,4cyclictest11112-21turbostat00:24:590
231559987,1cyclictest34-21ksoftirqd/322:15:013
231559984,3cyclictest658-21snmpd23:17:543
231499987,1cyclictest28-21ksoftirqd/222:50:002
231499987,1cyclictest28-21ksoftirqd/220:20:002
231459984,3cyclictest275-21systemd-journal20:13:551
231439981,4cyclictest19345-21awk00:30:000
11664280,1sleep20-21swapper/221:05:172
231559976,1cyclictest34-21ksoftirqd/319:15:023
231559974,2cyclictest275-21systemd-journal23:06:233
231559973,3cyclictest658-21snmpd19:50:443
231559973,3cyclictest275-21systemd-journal23:49:553
231559973,3cyclictest275-21systemd-journal23:49:553
231559973,3cyclictest275-21systemd-journal23:25:333
231559973,3cyclictest275-21systemd-journal20:02:293
231559973,3cyclictest275-21systemd-journal00:13:013
231499973,3cyclictest14541-21apt21:50:112
231499971,3cyclictest6032-21dump-pmu-power20:55:012
231499971,3cyclictest3810-21munin-run20:50:012
231459973,3cyclictest658-21snmpd22:02:301
231459973,3cyclictest24787-11brltty20:52:021
231459973,3cyclictest1-21systemd19:15:191
231459973,3cyclictest1205-21diskstats19:30:151
231459970,7cyclictest0-21swapper/123:47:291
231459970,7cyclictest0-21swapper/123:47:291
231439977,0cyclictest0-21swapper/022:50:100
231439973,3cyclictest658-21snmpd20:12:060
231439973,3cyclictest658-21snmpd00:13:270
231439973,3cyclictest275-21systemd-journal20:35:220
231439973,3cyclictest275-21systemd-journal20:28:560
231439973,3cyclictest27159-21ntpq19:15:170
231439972,3cyclictest275-21systemd-journal19:34:570
28038260,0sleep00-21swapper/023:35:280
231559966,0cyclictest0-21swapper/323:36:553
231559966,0cyclictest0-21swapper/300:37:183
231559965,1cyclictest0-21swapper/321:25:403
231559963,2cyclictest7406-21cut21:45:183
231559963,2cyclictest7406-21cut21:45:183
231559963,2cyclictest658-21snmpd22:29:123
231559963,2cyclictest5355-21sh00:20:333
231559963,2cyclictest504-21dbus-daemon23:24:193
231559963,2cyclictest504-21dbus-daemon20:34:573
231559963,2cyclictest4261-21sh22:42:043
231559963,2cyclictest29297-21sh23:56:013
231559963,2cyclictest2834-21rm22:21:473
231559963,2cyclictest275-21systemd-journal22:53:563
231559963,2cyclictest275-21systemd-journal21:51:163
231559963,2cyclictest25001-21sshd00:32:593
231559963,2cyclictest21860-21grep21:15:133
231559963,2cyclictest18756-21cat23:30:153
231559963,2cyclictest1371-21rm21:41:343
231559963,1cyclictest0-21swapper/322:05:383
231559963,1cyclictest0-21swapper/300:25:393
231559962,3cyclictest658-21snmpd23:42:233
231559962,3cyclictest658-21snmpd22:45:403
231559962,3cyclictest658-21snmpd22:37:343
231559962,3cyclictest658-21snmpd21:57:153
231559962,3cyclictest658-21snmpd21:35:013
231559962,3cyclictest658-21snmpd21:03:013
231559962,3cyclictest658-21snmpd20:40:033
231559962,3cyclictest658-21snmpd19:56:573
231559962,3cyclictest658-21snmpd19:45:043
231559962,3cyclictest658-21snmpd19:45:043
231559962,3cyclictest658-21snmpd19:41:193
231559962,3cyclictest658-21snmpd19:35:433
231559962,3cyclictest658-21snmpd19:27:523
231559962,3cyclictest658-21snmpd00:05:133
231559962,3cyclictest4062-21apt-get20:50:123
231559962,3cyclictest275-21systemd-journal19:22:293
231559962,3cyclictest275-21systemd-journal19:17:223
231559962,3cyclictest25856-21fw_packets20:25:133
231559962,3cyclictest23839-21cut20:20:133
231559962,3cyclictest16504-21hwlatdetect22:30:133
231559962,3cyclictest1288-21tune2fs23:00:153
231559962,2cyclictest275-21systemd-journal19:31:503
231559962,2cyclictest2337-40gzip00:00:013
231559962,1cyclictest0-21swapper/322:18:243
231559962,1cyclictest0-21swapper/321:23:523
231559961,2cyclictest34-21ksoftirqd/320:55:193
231559960,6cyclictest0-21swapper/323:51:213
231559960,0cyclictest0-21swapper/320:05:203
231499966,0cyclictest0-21swapper/223:05:182
231499963,2cyclictest7308-21awk21:45:172
231499963,2cyclictest7308-21awk21:45:172
231499963,2cyclictest658-21snmpd22:55:502
231499963,2cyclictest658-21snmpd22:50:352
231499963,2cyclictest504-21dbus-daemon22:34:122
231499963,2cyclictest4282-21ssh23:01:432
231499963,2cyclictest3655-21ntp_states00:00:182
231499963,2cyclictest3223-21sh00:20:052
231499963,2cyclictest275-21systemd-journal20:38:562
231499963,2cyclictest275-21systemd-journal19:24:202
231499963,2cyclictest26992-21systemctl23:15:172
231499963,2cyclictest16195-21ssh23:29:002
231499963,2cyclictest16095-21ssh21:30:392
231499963,2cyclictest15011-21sh22:10:062
231499963,2cyclictest11420-21ssh21:28:232
231499962,3cyclictest9039-21ls22:25:192
231499962,3cyclictest658-21snmpd23:44:142
231499962,3cyclictest658-21snmpd22:36:462
231499962,3cyclictest658-21snmpd20:31:322
231499962,3cyclictest658-21snmpd20:26:142
231499962,3cyclictest658-21snmpd19:30:072
231499962,3cyclictest658-21snmpd19:25:222
231499962,3cyclictest658-21snmpd19:13:542
231499962,3cyclictest6263-21ntpq19:40:172
231499962,3cyclictest275-21systemd-journal00:38:002
231499962,3cyclictest27436-21rm21:57:392
231499962,3cyclictest11605-21cat00:05:152
231499962,1cyclictest0-21swapper/221:42:022
231499962,1cyclictest0-21swapper/221:23:022
231499962,1cyclictest0-21swapper/200:25:512
231499961,1cyclictest650-21lldpd00:12:052
231499960,6cyclictest0-21swapper/223:48:072
231499960,6cyclictest0-21swapper/223:48:072
231499960,6cyclictest0-21swapper/222:05:112
231499960,5cyclictest31892-21cstates22:20:132
231499960,5cyclictest1-21systemd20:05:162
231459966,0cyclictest0-21swapper/123:58:241
231459966,0cyclictest0-21swapper/123:32:331
231459964,2cyclictest0-21swapper/123:10:001
231459964,1cyclictest1476-21hddtemp_smartct23:00:151
231459963,2cyclictest8235-21ssh00:03:201
231459963,2cyclictest7283-21ls19:45:021
231459963,2cyclictest658-21snmpd22:21:361
231459963,2cyclictest504-21dbus-daemon23:10:191
231459963,2cyclictest504-21dbus-daemon20:22:261
231459963,2cyclictest31568-21sh00:17:091
231459963,2cyclictest31198-21cat21:40:151
231459963,2cyclictest28884-21ssh22:18:151
231459963,2cyclictest275-21systemd-journal00:11:001
231459963,2cyclictest2574-21sh22:40:461
231459963,2cyclictest20800-21needreboot00:30:161
231459963,2cyclictest19966-21sed23:50:201
231459963,2cyclictest17122-21tr22:30:171
231459963,2cyclictest11699-21latency00:05:141
231459963,1cyclictest0-21swapper/121:55:241
231459963,1cyclictest0-21swapper/100:39:261
231459963,1cyclictest0-21swapper/100:20:191
231459962,3cyclictest658-21snmpd23:39:441
231459962,3cyclictest658-21snmpd23:25:021
231459962,3cyclictest658-21snmpd22:53:591
231459962,3cyclictest658-21snmpd22:26:511
231459962,3cyclictest658-21snmpd22:07:091
231459962,3cyclictest658-21snmpd20:42:421
231459962,3cyclictest658-21snmpd20:15:051
231459962,3cyclictest658-21snmpd20:06:231
231459962,3cyclictest658-21snmpd19:37:591
231459962,3cyclictest275-21systemd-journal19:51:301
231459962,3cyclictest27304-21cron20:30:011
231459962,3cyclictest24468-21expr22:35:131
231459962,3cyclictest14894-21cat20:00:171
231459962,3cyclictest12766-21sed00:25:191
231459962,3cyclictest11409-21cat21:05:151
231459962,1cyclictest1066-21dump-pmu-power23:20:001
231459960,6cyclictest0-21swapper/122:47:421
231459960,6cyclictest0-21swapper/122:13:351
231459960,6cyclictest0-21swapper/121:54:101
231459960,6cyclictest0-21swapper/121:31:321
231459960,3cyclictest25328-21grep19:15:011
231439963,2cyclictest6133-21sort20:55:000
231439963,2cyclictest29394-21ssh22:57:260
231439963,2cyclictest29224-21ssh00:15:190
231439963,2cyclictest2900-21chrt00:39:390
231439963,2cyclictest2842-21expr00:00:130
231439963,2cyclictest275-21systemd-journal19:47:270
231439963,2cyclictest275-21systemd-journal19:47:270
231439963,2cyclictest27348-21sshd21:37:580
231439963,2cyclictest13839-21hddtemp_smartct21:10:140
231439963,2cyclictest12763-21ssh23:06:540
231439963,2cyclictest0-21swapper/022:15:400
231439963,1cyclictest0-21swapper/023:01:150
231439962,3cyclictest658-21snmpd23:21:560
231439962,3cyclictest658-21snmpd23:10:140
231439962,3cyclictest658-21snmpd22:10:150
231439962,3cyclictest658-21snmpd22:05:480
231439962,3cyclictest658-21snmpd21:16:560
231439962,3cyclictest658-21snmpd21:04:540
231439962,3cyclictest658-21snmpd20:34:300
231439962,3cyclictest658-21snmpd20:21:330
231439962,3cyclictest658-21snmpd19:20:140
231439962,3cyclictest504-21dbus-daemon21:53:210
231439962,3cyclictest31486-21ntp_kernel_pll_21:40:160
231439962,3cyclictest3059-21ntpq23:40:180
231439962,3cyclictest275-21systemd-journal21:09:580
231439962,3cyclictest275-21systemd-journal00:33:020
231439962,3cyclictest21073-21cat20:15:130
231439962,3cyclictest18262-21expr23:30:130
231439962,3cyclictest17379-21ntpq20:05:170
231439962,3cyclictest14726-21fw_packets20:00:160
231439961,3cyclictest2024-21rm22:21:080
231439960,6cyclictest0-21swapper/023:59:490
231439960,2cyclictest5282-21/usr/sbin/munin19:40:130
231439960,0cyclictest0-21swapper/022:28:020
231559953,1cyclictest29806-21grep20:35:143
231559953,1cyclictest13914-21if_enp4s021:10:163
231559952,2cyclictest3469-21taskset20:46:103
231559952,2cyclictest18942-21expr20:10:113
231559952,2cyclictest11116-21sh21:05:143
231559952,1cyclictest0-21swapper/323:10:433
231559951,3cyclictest21261-21diskstats20:15:133
231559951,2cyclictest25054-21cat22:55:133
231499953,1cyclictest32185-21cpuspeed_turbos20:40:122
231499953,1cyclictest18075-21fschecks_time23:10:142
231499952,2cyclictest8205-21cat19:45:162
231499952,2cyclictest8205-21cat19:45:162
231499952,2cyclictest658-21snmpd21:00:002
231499952,2cyclictest658-21snmpd20:10:022
231499952,2cyclictest658-21snmpd00:15:002
231499952,2cyclictest6571-21expr20:55:132
231499952,2cyclictest3734-21cat19:35:152
231499952,2cyclictest28-21ksoftirqd/222:40:012
231499952,2cyclictest26482-21expr19:15:132
231499952,2cyclictest21262-21sh00:30:192
231499952,2cyclictest18431-21sh23:50:112
231499952,2cyclictest17823-21ssh23:30:062
231499952,2cyclictest14921-21uname20:00:172
231499952,2cyclictest1396-21ssh23:20:052
231499952,1cyclictest0-21swapper/222:15:062
231499951,3cyclictest27897-21ssh23:35:202
231499951,3cyclictest23355-21cstates20:20:112
231499951,3cyclictest12948-21open_files19:55:162
231459952,3cyclictest21842-21kworker/1:121:00:091
231459952,2cyclictest8697-21mailstats19:45:191
231459952,2cyclictest8697-21mailstats19:45:181
231459952,2cyclictest6546-21cat20:55:131
231459952,2cyclictest6027-21expr21:25:111
231459952,2cyclictest504-21dbus-daemon19:20:011
231459952,2cyclictest2975-21cat23:20:191
231459952,2cyclictest25265-21expr22:55:131
231459952,2cyclictest22280-21cat21:35:131
231459952,2cyclictest12291-21expr19:55:121
231459951,3cyclictest658-21snmpd19:25:041
231459951,3cyclictest30840-21/usr/sbin/munin20:35:201
231459951,3cyclictest29589-21/usr/sbin/munin21:20:131
231459950,2cyclictest27548-21/usr/sbin/munin20:30:111
231439953,1cyclictest663-21runrttasks20:55:160
231439953,1cyclictest25708-21sh23:15:110
231439952,2cyclictest658-21snmpd22:35:020
231439952,2cyclictest32706-21cat20:40:140
231439952,2cyclictest2181-21cat20:45:120
231439952,2cyclictest10311-21tail19:50:140
231439952,2cyclictest0-21swapper/021:45:040
231439952,2cyclictest0-21swapper/021:45:040
231439951,3cyclictest658-21snmpd22:45:100
231439951,3cyclictest5717-21basename21:25:110
231439951,3cyclictest275-21systemd-journal19:37:150
231439951,3cyclictest24004-21cat19:10:150
231439951,3cyclictest12402-21tune2fs19:55:130
231439950,4cyclictest30972-21/usr/sbin/munin19:25:160
231439950,4cyclictest10895-21ssh00:05:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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