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2026-07-23 - 08:50
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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 rackaslot8.osadl.org (updated Thu Jul 23, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
280242312287,17sleep20-21swapper/219:06:262
281332293268,16sleep10-21swapper/119:07:491
283102285253,21sleep30-21swapper/319:09:573
281372275246,18sleep00-21swapper/019:07:530
160592610,0sleep30-21swapper/323:45:013
132302610,0sleep10-21swapper/119:45:171
153332600,0sleep00-21swapper/000:24:090
296572580,0sleep10-21swapper/123:33:261
220892580,0sleep222087-21cpuspeed_turbos22:50:132
195902580,0sleep1211rcuc/123:07:501
106602580,0sleep30-21swapper/323:21:423
324492540,0sleep20-21swapper/221:18:042
189482200,0sleep00-21swapper/023:45:530
136742200,0sleep20-21swapper/222:45:142
43312190,0sleep00-21swapper/023:37:280
32452170,0sleep20-21swapper/223:55:402
74262160,0sleep00-21swapper/000:19:290
136532140,0sleep30-21swapper/300:02:153
101972140,0sleep00-21swapper/022:21:130
180942130,0sleep30-21swapper/322:06:593
193102120,0sleep30-21swapper/300:25:363
193102120,0sleep30-21swapper/300:25:363
196062110,0sleep20-21swapper/223:46:242
284389994,3cyclictest304-21systemd-udevd00:24:352
284389992,1cyclictest141rcu_preempt22:15:162
284389990,8cyclictest25055-21sh23:50:092
284429984,3cyclictest504-21dbus-daemon19:30:183
284429980,7cyclictest32160-21ssh21:17:513
284429980,1cyclictest18541-21irqstats00:05:173
284429973,3cyclictest504-21dbus-daemon21:30:013
284429973,3cyclictest304-21systemd-udevd21:41:353
284389976,1cyclictest0-21swapper/223:38:232
284389976,1cyclictest0-21swapper/221:34:352
284389973,3cyclictest8967-21ntpq19:35:192
284389973,3cyclictest658-21snmpd20:46:512
284389973,3cyclictest504-21dbus-daemon00:02:542
284389973,3cyclictest275-21systemd-journal22:40:352
284349976,1cyclictest9059-21kworker/1:121:24:251
284349973,3cyclictest275-21systemd-journal23:11:591
284349973,3cyclictest275-21systemd-journal21:35:551
284349972,3cyclictest275-21systemd-journal21:00:011
284349972,1cyclictest0-21swapper/121:40:201
284349970,4cyclictest9986-21idleruntime-cro19:40:001
284349970,1cyclictest0-21swapper/100:28:351
284349970,1cyclictest0-21swapper/100:28:341
284299976,1cyclictest5837-21ssh21:21:060
284299976,1cyclictest20565-21ssh22:08:520
284299974,2cyclictest31623-21grep20:25:180
284299973,3cyclictest275-21systemd-journal22:46:280
284299973,3cyclictest275-21systemd-journal22:32:420
28060270,0sleep00-21swapper/000:11:490
284429966,0cyclictest0-21swapper/323:35:273
284429966,0cyclictest0-21swapper/322:57:343
284429966,0cyclictest0-21swapper/321:50:413
284429966,0cyclictest0-21swapper/321:45:023
284429963,2cyclictest8455-21tune2fs19:35:163
284429963,2cyclictest7544-21sshd21:22:253
284429963,2cyclictest658-21snmpd22:50:133
284429963,2cyclictest501-21in:imuxsock21:09:393
284429963,2cyclictest31902-21ssh21:55:383
284429963,2cyclictest304-21systemd-udevd22:11:353
284429963,2cyclictest30270-21sh00:32:443
284429963,2cyclictest28057-21ssh21:35:063
284429963,2cyclictest25819-21ssh21:33:343
284429963,2cyclictest25765-21rm23:30:283
284429963,2cyclictest21441-21cat20:05:133
284429963,2cyclictest20441-21sh23:47:033
284429963,2cyclictest19799-21sh21:10:183
284429963,2cyclictest16339-21sshd19:51:253
284429963,2cyclictest16182-21rm23:25:153
284429963,2cyclictest10671-21ssh00:20:333
284429963,1cyclictest0-21swapper/322:16:513
284429962,3cyclictest658-21snmpd23:51:093
284429962,3cyclictest658-21snmpd23:15:583
284429962,3cyclictest658-21snmpd21:03:453
284429962,3cyclictest658-21snmpd20:30:093
284429962,3cyclictest658-21snmpd20:18:263
284429962,3cyclictest658-21snmpd20:00:043
284429962,3cyclictest658-21snmpd19:48:233
284429962,3cyclictest658-21snmpd19:21:243
284429962,3cyclictest32377-21seq20:28:173
284429962,3cyclictest275-21systemd-journal20:45:013
284429962,3cyclictest10531-21ntpq20:50:203
284429962,1cyclictest141rcu_preempt22:40:113
284429962,1cyclictest0-21swapper/323:13:323
284429962,1cyclictest0-21swapper/322:36:523
284429962,1cyclictest0-21swapper/322:27:443
284429962,1cyclictest0-21swapper/322:02:593
284429962,1cyclictest0-21swapper/300:10:023
284429961,3cyclictest275-21systemd-journal22:20:343
284429960,6cyclictest0-21swapper/323:05:593
284429960,5cyclictest3066-21rm00:16:073
284429960,5cyclictest23706-21apt-key20:10:013
284389966,0cyclictest0-21swapper/222:26:342
284389966,0cyclictest0-21swapper/221:39:382
284389966,0cyclictest0-21swapper/200:16:222
284389963,2cyclictest9566-21/usr/sbin/munin20:50:192
284389963,2cyclictest6852-21sh23:20:012
284389963,2cyclictest663-21runrttasks20:27:332
284389963,2cyclictest658-21snmpd22:01:212
284389963,2cyclictest658-21snmpd19:55:522
284389963,2cyclictest5504-21sshd19:30:012
284389963,2cyclictest504-21dbus-daemon19:30:412
284389963,2cyclictest3654-21ssh00:35:492
284389963,2cyclictest31668-21smart_sda22:55:182
284389963,2cyclictest3043-21ssh23:17:162
284389963,2cyclictest275-21systemd-journal21:41:232
284389963,2cyclictest275-21systemd-journal20:14:552
284389963,2cyclictest25338-21ssh00:30:062
284389963,2cyclictest23828-21ssh00:29:062
284389963,2cyclictest23828-21ssh00:29:062
284389963,2cyclictest21523-21ssh21:50:152
284389963,2cyclictest1880-21ssh22:37:492
284389963,2cyclictest17960-21ssh23:25:552
284389963,2cyclictest13402-21ntpq19:45:182
284389963,2cyclictest13359-21ssh21:25:272
284389963,2cyclictest12935-21expr21:45:132
284389962,3cyclictest658-21snmpd23:33:112
284389962,3cyclictest658-21snmpd22:31:102
284389962,3cyclictest658-21snmpd21:24:252
284389962,3cyclictest658-21snmpd21:10:372
284389962,3cyclictest658-21snmpd21:00:162
284389962,3cyclictest658-21snmpd20:35:562
284389962,3cyclictest658-21snmpd20:34:542
284389962,3cyclictest658-21snmpd20:15:412
284389962,3cyclictest658-21snmpd20:04:132
284389962,3cyclictest658-21snmpd00:10:382
284389962,3cyclictest32452-21ntpq19:15:182
284389962,3cyclictest30311-21fschecks_time21:55:162
284389962,3cyclictest2526-21grep19:20:192
284389962,3cyclictest22028-21cat20:05:162
284389962,3cyclictest14543-21ls22:05:132
284389962,1cyclictest0-21swapper/223:08:122
284389962,1cyclictest0-21swapper/200:05:332
284389960,6cyclictest0-21swapper/222:20:402
284389960,3cyclictest8458-21sshd23:00:422
284349966,0cyclictest0-21swapper/122:38:161
284349966,0cyclictest0-21swapper/122:32:161
284349963,2cyclictest992-21ssh21:56:471
284349963,2cyclictest6458-11brltty21:25:041
284349963,2cyclictest5779-21cat22:00:121
284349963,2cyclictest504-21dbus-daemon22:10:011
284349963,2cyclictest504-21dbus-daemon20:03:411
284349963,2cyclictest3317-21sh00:16:201
284349963,2cyclictest275-21systemd-journal20:26:371
284349963,2cyclictest21700-21rm21:30:261
284349963,2cyclictest20121-21chrt23:27:331
284349963,2cyclictest19902-21ssh23:46:361
284349963,2cyclictest13469-21wc21:45:161
284349963,2cyclictest11848-21sh23:41:491
284349963,1cyclictest141rcu_preempt00:35:001
284349962,3cyclictest7511-21expr23:20:151
284349962,3cyclictest658-21snmpd22:51:121
284349962,3cyclictest658-21snmpd21:12:571
284349962,3cyclictest658-21snmpd21:07:391
284349962,3cyclictest658-21snmpd20:13:091
284349962,3cyclictest658-21snmpd19:30:151
284349962,3cyclictest658-21snmpd00:35:091
284349962,3cyclictest658-21snmpd00:00:171
284349962,3cyclictest32000-21cat22:15:151
284349962,3cyclictest31355-11brltty00:08:451
284349962,3cyclictest275-21systemd-journal22:13:021
284349962,3cyclictest2537-21smart_sda19:20:191
284349962,3cyclictest21592-21cut21:50:151
284349961,3cyclictest275-21systemd-journal22:40:371
284349961,3cyclictest26889-21cups-browsed23:55:001
284349960,6cyclictest0-21swapper/122:56:181
284349960,6cyclictest0-21swapper/122:27:491
284349960,3cyclictest674-21lldpd19:44:171
284349960,2cyclictest3531-21/usr/sbin/munin19:25:151
284349960,0cyclictest0-21swapper/123:38:241
284349960,0cyclictest0-21swapper/123:15:121
284299966,0cyclictest0-21swapper/000:39:560
284299963,2cyclictest8447-21expr23:40:140
284299963,2cyclictest7444-21chrt19:31:350
284299963,2cyclictest658-21snmpd23:20:190
284299963,2cyclictest658-21snmpd22:10:490
284299963,2cyclictest6458-11brltty21:12:590
284299963,2cyclictest3538-21cat19:25:110
284299963,2cyclictest3076-21ssh23:55:330
284299963,2cyclictest275-21systemd-journal20:42:590
284299963,2cyclictest24197-21cat23:30:130
284299963,2cyclictest2360-21ssh22:38:100
284299963,2cyclictest22969-21rm22:50:170
284299963,2cyclictest22493-21cat21:50:190
284299963,2cyclictest20893-21ssh23:08:510
284299963,2cyclictest13066-21rm22:04:340
284299963,1cyclictest0-21swapper/000:25:390
284299963,1cyclictest0-21swapper/000:25:390
284299962,3cyclictest7385-21sed23:00:200
284299962,3cyclictest658-21snmpd23:11:110
284299962,3cyclictest658-21snmpd22:58:070
284299962,3cyclictest658-21snmpd21:40:170
284299962,3cyclictest658-21snmpd21:16:450
284299962,3cyclictest658-21snmpd21:06:150
284299962,3cyclictest658-21snmpd20:55:000
284299962,3cyclictest658-21snmpd20:30:500
284299962,3cyclictest658-21snmpd20:21:140
284299962,3cyclictest658-21snmpd20:13:540
284299962,3cyclictest658-21snmpd19:53:520
284299962,3cyclictest658-21snmpd19:40:520
284299962,3cyclictest658-21snmpd19:16:480
284299962,3cyclictest658-21snmpd19:12:010
284299962,3cyclictest658-21snmpd00:30:090
284299962,3cyclictest31938-21if_enp4s023:15:180
284299962,3cyclictest2884-21expr20:35:140
284299962,3cyclictest22044-21cat20:05:170
284299962,3cyclictest20503-21smartctl21:30:160
284299962,3cyclictest16064-21wc21:05:000
284299962,3cyclictest13831-21expr19:45:210
284299962,3cyclictest10153-21cat00:00:140
284299962,1cyclictest0-21swapper/021:37:400
284299962,1cyclictest0-21swapper/021:25:520
284299962,0cyclictest12-21ksoftirqd/020:15:120
284299961,3cyclictest23353-21ls23:30:000
284299961,2cyclictest31270-21ssh23:53:400
284299960,6cyclictest0-21swapper/021:47:420
284299960,0cyclictest0-21swapper/021:58:530
284429953,1cyclictest658-21snmpd22:30:153
284429953,1cyclictest31945-21tune2fs19:15:143
284429952,2cyclictest7276-21expr20:45:103
284429952,2cyclictest658-21snmpd19:40:023
284429952,2cyclictest28632-21expr20:20:103
284429952,2cyclictest17385-21tune2fs19:55:163
284429952,2cyclictest1489-21expr23:55:143
284429952,2cyclictest13632-21grep22:45:143
284429952,2cyclictest11995-21cat20:55:123
284429952,2cyclictest0-21swapper/319:10:163
284429952,1cyclictest0-21swapper/323:00:293
284429951,2cyclictest275-21systemd-journal19:25:153
284429951,1cyclictest0-21swapper/300:35:043
284429950,3cyclictest2688-21sshd20:35:143
284389955,0cyclictest0-21swapper/219:50:032
284389952,2cyclictest658-21snmpd23:40:092
284389952,2cyclictest5520-21cat20:40:152
284389952,2cyclictest29036-21cat20:20:142
284389952,2cyclictest28607-21chrt19:10:032
284389952,2cyclictest23531-21which22:10:162
284389952,2cyclictest13464-21sshd20:56:242
284389952,2cyclictest10296-21cpu19:40:132
284389951,3cyclictest16282-21sshd21:05:182
284389950,4cyclictest23148-21expr23:10:122
284349953,1cyclictest869-21grep20:30:141
284349952,2cyclictest8285-21awk20:45:161
284349952,2cyclictest658-21snmpd20:40:471
284349952,2cyclictest658-21snmpd20:15:061
284349952,2cyclictest658-21snmpd19:55:011
284349952,2cyclictest6409-21ssh23:00:141
284349952,2cyclictest31947-21cut19:15:151
284349952,2cyclictest28358-21sshd20:20:101
284349952,2cyclictest21778-21sort20:05:151
284349952,2cyclictest14584-21gltestperf21:00:131
284349952,2cyclictest10086-21fschecks_time20:50:181
284349952,1cyclictest0-21swapper/123:55:021
284349951,3cyclictest27692-21perl21:15:141
284349951,1cyclictest13617-21apt-get22:45:131
284349950,4cyclictest8402-21diskmemload00:20:031
284349950,4cyclictest7273-21/usr/sbin/munin22:20:131
284349950,4cyclictest30656-21munin-node19:15:011
284349950,4cyclictest2576-21/usr/sbin/munin20:35:131
284349950,3cyclictest275-21systemd-journal19:50:021
284349950,3cyclictest26129-21rm00:10:191
284299952,2cyclictest9342-21dpkg20:50:010
284299952,2cyclictest658-21snmpd22:15:040
284299952,2cyclictest658-21snmpd19:35:010
284299952,2cyclictest30880-1kworker/u9:222:40:040
284299952,2cyclictest19462-21cat20:00:130
284299951,3cyclictest7441-21diskstats20:45:110
284299951,3cyclictest17338-21tune2fs19:55:160
284299951,3cyclictest16993-21run-parts22:25:180
284299950,1cyclictest141rcu_preempt00:05:140
284299950,1cyclictest1305-21/usr/sbin/munin19:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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