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2026-05-08 - 14:30
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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 highest latencies:
System rackaslot8.osadl.org (updated Fri May 08, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
149472282252,20sleep10-21swapper/119:08:041
150872275244,20sleep00-21swapper/019:09:510
150792271241,19sleep20-21swapper/219:09:462
148312260228,22sleep30-21swapper/319:06:483
200552950,0sleep30-21swapper/323:34:373
59612650,0sleep012-21ksoftirqd/022:08:250
71212620,0sleep20-21swapper/200:05:152
6312580,0sleep30-21swapper/300:20:333
253382580,0sleep20-21swapper/222:20:122
327162570,0sleep00-21swapper/023:22:250
93742560,0sleep30-21swapper/300:25:543
184552560,0sleep00-21swapper/000:12:050
88922530,0sleep20-21swapper/200:25:342
25702220,0sleep10-21swapper/122:05:491
163622200,0sleep20-21swapper/221:15:562
317642190,0sleep00-21swapper/022:24:030
257622180,0sleep10-21swapper/122:00:211
224142180,0sleep10-21swapper/120:35:121
310872170,0sleep20-21swapper/221:25:132
201842170,0sleep10-21swapper/123:53:571
62902150,1sleep20-21swapper/220:00:022
227822150,0sleep00-21swapper/022:37:520
152282150,0sleep10-21swapper/123:30:551
1520099140,1cyclictest169912sleep119:10:271
1520499132,8cyclictest658-21snmpd21:59:042
1520499130,1cyclictest30560-21ssh00:39:312
1520099132,7cyclictest0-21swapper/100:26:481
1520499121,8cyclictest14117-21sh21:54:132
1520099121,7cyclictest25317-21sh23:18:081
1520099120,1cyclictest9482-21apt-get22:30:151
102402120,0sleep20-21swapper/222:50:122
1520499112,8cyclictest504-21dbus-daemon20:50:012
1520499112,5cyclictest4545-21ssh21:48:172
1520499112,5cyclictest27955-21ssh22:40:252
1520499112,5cyclictest0-21swapper/223:35:442
1520499111,9cyclictest6426-21apt-get21:30:122
1520499111,8cyclictest27057-21chrt19:33:062
1520499111,6cyclictest658-21snmpd22:55:352
1520499111,6cyclictest0-21swapper/223:26:362
1520499110,7cyclictest14206-21sh22:32:402
1520499110,7cyclictest10801-21chrt21:13:042
1520499110,6cyclictest275-21systemd-journal19:28:072
1520499110,6cyclictest16500-21ssh23:12:462
1520499110,2cyclictest905-21ssh23:03:472
1520499110,2cyclictest32507-21ssh23:22:142
1520499110,2cyclictest28854-21ssh21:24:072
1520499110,2cyclictest24322-21cpu20:40:112
1520499110,2cyclictest22529-21diskstats23:55:152
1520499110,2cyclictest19961-21ssh22:16:232
1520499110,2cyclictest18200-21ssh00:11:532
1520499110,1cyclictest22277-21ssh22:37:292
1520099113,7cyclictest4799-21apt-key23:45:001
1520099112,5cyclictest658-21snmpd22:43:531
1520099110,7cyclictest0-21swapper/123:23:301
1520099110,3cyclictest28587-21sh21:43:151
1520099110,2cyclictest24602-21ssh21:20:511
1520099110,1cyclictest11093-21ssh23:09:591
1519699119,1cyclictest12-21ksoftirqd/000:19:590
1519699118,2cyclictest12-21ksoftirqd/000:00:010
1520499101,7cyclictest275-21systemd-journal23:45:022
1520499101,5cyclictest31301-21seq19:40:332
1520499100,6cyclictest3032-21ssh00:22:262
1520499100,6cyclictest15192-21ssh23:30:522
1520499100,3cyclictest5801-21ssh22:27:372
1520499100,3cyclictest32419-21ssh23:41:232
1520499100,3cyclictest24560-21ssh00:15:252
1520499100,3cyclictest21047-21ssh23:54:362
1520499100,2cyclictest5703-21sshd19:57:282
1520499100,2cyclictest5095-21ssh23:05:232
1520499100,2cyclictest32633-21chrt20:56:342
1520499100,2cyclictest25071-21ssh21:40:342
1520499100,2cyclictest22520-21ssh00:34:422
1520499100,2cyclictest2207-21ssh00:02:172
1520499100,2cyclictest18949-21ssh21:37:162
1520499100,1cyclictest33222sleep219:50:332
1520499100,1cyclictest32391-21ssh22:05:022
1520499100,1cyclictest24004-21ssh22:00:122
1520499100,1cyclictest14460-21ssh22:13:322
1520499100,1cyclictest126642chrt20:12:222
1520499100,0cyclictest0-21swapper/220:20:112
1520099103,6cyclictest19374-21sshd20:27:321
1520099101,2cyclictest658-21snmpd23:49:181
1520099100,3cyclictest28325-21chrt20:47:571
1520099100,3cyclictest275-21systemd-journal21:05:001
1520099100,1cyclictest25241-21ssh23:56:261
1520099100,1cyclictest24779-21ssh22:58:351
1520099100,1cyclictest18434-21ssh22:35:161
1520099100,1cyclictest16793-21sed20:20:191
1520099100,1cyclictest16488-21ssh21:16:031
1520099100,1cyclictest13454-21ssh21:34:261
1520099100,1cyclictest11705-21ssh22:11:271
1520099100,1cyclictest1033-21ssh23:03:531
1520099100,1cyclictest0-21swapper/123:28:241
1520099100,1cyclictest0-21swapper/122:50:191
1520099100,1cyclictest0-21swapper/121:47:561
1520099100,0cyclictest0-21swapper/119:40:121
1519699109,1cyclictest12-21ksoftirqd/021:40:000
1519699109,1cyclictest12-21ksoftirqd/019:20:010
1519699109,1cyclictest12-21ksoftirqd/000:40:000
1519699107,2cyclictest12-21ksoftirqd/022:30:010
152089990,8cyclictest26838-21latency_hist23:00:013
152049992,6cyclictest18423-21load20:25:152
152049992,4cyclictest0-21swapper/220:33:122
152049991,7cyclictest1-21systemd20:40:002
152049991,7cyclictest0-21swapper/219:35:112
152049990,8cyclictest504-21dbus-daemon20:55:012
152049990,8cyclictest3903-21grep21:05:162
152049990,5cyclictest1149-21chrt19:46:082
152049990,2cyclictest8519-21ssh22:49:032
152049990,2cyclictest2608-21chrt21:03:072
152049990,2cyclictest17080-21chrt19:11:362
152049990,1cyclictest8725-21apt-get20:05:102
152049990,1cyclictest26523-21ssh23:19:032
152049990,1cyclictest0-21swapper/220:15:132
152009993,5cyclictest16608-21sh22:15:011
152009992,6cyclictest9273-21grep20:05:131
152009992,6cyclictest658-21snmpd21:28:371
152009992,6cyclictest658-21snmpd19:53:251
152009992,6cyclictest658-21snmpd00:20:171
152009992,6cyclictest3149-21cpuspeed_turbos21:05:121
152009992,6cyclictest30678-21expr00:00:121
152009990,3cyclictest28406-21ssh00:18:251
152009990,3cyclictest15688-21ssh21:55:121
152009990,2cyclictest6507-21apt-get20:00:101
152009990,2cyclictest5253-21ssh21:10:021
152009990,2cyclictest28854-21perf23:40:011
152009990,2cyclictest22469-21latency_hist19:25:011
152009990,2cyclictest19858-21apt-get20:30:111
152009990,1cyclictest14560-21sh21:35:071
152009990,1cyclictest12648-21ssh00:08:591
152009990,1cyclictest0-21swapper/123:12:231
152009990,1cyclictest0-21swapper/122:26:591
152009990,1cyclictest0-21swapper/120:10:111
152009990,1cyclictest0-21swapper/100:37:101
152009990,1cyclictest0-21swapper/100:30:101
151969998,1cyclictest12-21ksoftirqd/023:05:000
151969998,1cyclictest12-21ksoftirqd/020:00:010
151969998,1cyclictest12-21ksoftirqd/019:15:010
151969997,1cyclictest12-21ksoftirqd/022:55:000
151969993,3cyclictest30022-21munin-run21:25:010
26898280,1sleep30-21swapper/322:40:153
152089984,3cyclictest275-21systemd-journal23:25:003
152049980,3cyclictest21133-21basename19:20:152
152049980,3cyclictest19284-21/usr/sbin/munin19:15:202
152009982,5cyclictest658-21snmpd19:33:381
152009982,5cyclictest25418-21cstates22:20:121
152009981,1cyclictest13620-21fschecks_time20:15:151
152009980,3cyclictest31909-21runrttasks19:45:071
152009980,3cyclictest24290-21/usr/sbin/munin20:40:111
152009980,3cyclictest1969-21/usr/sbin/munin22:45:201
152009980,3cyclictest17519-21munin-node19:15:011
152009980,2cyclictest4134-21cpuspeed_turbos19:55:131
152009980,2cyclictest29959-21smart_sda20:50:191
152009980,2cyclictest275-21systemd-journal21:50:011
152009980,2cyclictest22991-21apt-get19:25:021
152009980,1cyclictest44-21kcompactd000:10:121
152009980,1cyclictest31494-21grep20:55:131
152009980,1cyclictest0-21swapper/119:35:121
151969987,1cyclictest12-21ksoftirqd/023:35:000
151969987,1cyclictest12-21ksoftirqd/023:05:010
151969987,1cyclictest12-21ksoftirqd/021:45:010
151969987,1cyclictest12-21ksoftirqd/021:20:010
151969987,1cyclictest12-21ksoftirqd/021:05:000
151969987,1cyclictest12-21ksoftirqd/020:20:000
151969987,1cyclictest12-21ksoftirqd/019:30:020
151969987,1cyclictest12-21ksoftirqd/000:30:000
151969987,1cyclictest12-21ksoftirqd/000:05:010
151969986,1cyclictest12-21ksoftirqd/023:20:010
151969986,1cyclictest12-21ksoftirqd/023:15:000
151969986,1cyclictest12-21ksoftirqd/021:30:010
151969983,3cyclictest12-21ksoftirqd/020:00:140
152089976,1cyclictest12284-21ssh22:11:553
152089974,2cyclictest30772-21df00:00:123
152089973,3cyclictest658-21snmpd19:38:013
151969976,1cyclictest131rcuc/021:55:010
151969976,1cyclictest12-21ksoftirqd/023:45:010
151969976,1cyclictest12-21ksoftirqd/023:40:000
151969976,1cyclictest12-21ksoftirqd/021:00:000
151969976,1cyclictest12-21ksoftirqd/019:25:020
151969975,2cyclictest12-21ksoftirqd/021:15:000
151969975,1cyclictest12-21ksoftirqd/020:30:010
151969975,1cyclictest12-21ksoftirqd/019:55:010
151969974,1cyclictest12-21ksoftirqd/022:02:240
151969974,1cyclictest12-21ksoftirqd/021:30:170
151969973,1cyclictest0-21swapper/023:42:180
151969972,3cyclictest141rcu_preempt22:16:380
151969972,3cyclictest12-21ksoftirqd/020:50:150
151969970,5cyclictest12-21ksoftirqd/022:45:200
13643270,0sleep30-21swapper/323:10:353
6727260,0sleep30-21swapper/323:45:193
152089966,0cyclictest0-21swapper/322:22:073
152089963,2cyclictest7535-21ssh21:10:363
152089963,2cyclictest7215-21awk00:05:153
152089963,2cyclictest658-21snmpd22:08:163
152089963,2cyclictest658-21snmpd19:47:553
152089963,2cyclictest5867-21sh23:05:593
152089963,2cyclictest275-21systemd-journal20:02:453
152089963,2cyclictest25530-21sshd23:18:173
152089963,2cyclictest2241-21wc22:25:163
152089963,2cyclictest16941-21ssh00:10:553
152089963,2cyclictest15928-21ssh23:50:403
152089963,2cyclictest0-21swapper/321:40:023
152089963,2cyclictest0-21swapper/321:16:503
152089963,1cyclictest0-21swapper/321:25:553
152089962,3cyclictest6710-21cat21:30:133
152089962,3cyclictest658-21snmpd23:25:143
152089962,3cyclictest658-21snmpd22:35:283
152089962,3cyclictest658-21snmpd22:32:133
152089962,3cyclictest658-21snmpd21:51:273
152089962,3cyclictest658-21snmpd21:49:183
152089962,3cyclictest658-21snmpd21:08:083
152089962,3cyclictest658-21snmpd19:25:463
152089962,3cyclictest658-21snmpd19:18:463
152089962,3cyclictest658-21snmpd00:35:193
152089962,3cyclictest275-21systemd-journal23:41:113
152089962,3cyclictest275-21systemd-journal23:02:123
152089962,3cyclictest2743-21cat22:45:153
152089962,3cyclictest24985-21cat20:40:143
152089962,3cyclictest24276-21expr22:00:133
152089962,3cyclictest23430-21timerwakeupswit20:35:183
152089962,3cyclictest22841-21cat23:55:173
152089962,3cyclictest22627-21cat23:35:203
152089962,3cyclictest21013-21fw_packets19:20:153
152089962,3cyclictest20106-21expr20:30:123
152089962,3cyclictest14563-21cat20:15:223
152089962,3cyclictest11597-21cat20:10:153
152089962,3cyclictest11571-21systemctl22:50:203
152089962,3cyclictest0-21swapper/321:35:413
152089962,2cyclictest275-21systemd-journal21:55:013
152089960,6cyclictest0-21swapper/321:22:413
152089960,2cyclictest29132-21df20:50:143
152089960,2cyclictest25237-21/usr/sbin/munin19:30:203
152089960,2cyclictest24348-21sed00:15:203
152089960,2cyclictest18023-21diskstats20:25:133
151969965,1cyclictest12-21ksoftirqd/021:10:000
151969965,1cyclictest12-21ksoftirqd/020:15:000
151969965,1cyclictest12-21ksoftirqd/020:10:010
151969964,2cyclictest12-21ksoftirqd/022:10:140
151969963,2cyclictest674-21lldpd00:20:120
151969963,2cyclictest27961-21fschecks_time19:35:130
151969963,1cyclictest141rcu_preempt23:50:140
151969963,1cyclictest141rcu_preempt22:55:010
151969963,1cyclictest12-21ksoftirqd/020:45:140
151969963,0cyclictest141rcu_preempt21:55:180
151969962,3cyclictest658-21snmpd20:30:160
151969962,3cyclictest658-21snmpd20:21:450
151969962,3cyclictest658-21snmpd19:41:460
151969962,1cyclictest12-21ksoftirqd/020:35:170
151969961,3cyclictest275-21systemd-journal22:30:040
151969961,3cyclictest141rcu_preempt20:40:100
151969960,6cyclictest0-21swapper/022:40:180
151969960,6cyclictest0-21swapper/021:45:060
151969960,4cyclictest131rcuc/023:25:060
151969960,3cyclictest26769-21unixbench_singl19:30:200
151969960,3cyclictest12-21ksoftirqd/000:30:100
151969960,1cyclictest0-21swapper/000:05:120
152089953,1cyclictest31662-21irqstats20:55:153
152089952,3cyclictest30859-21kworker/3:121:00:203
152089952,2cyclictest658-21snmpd19:12:493
152089952,2cyclictest26591-21awk20:45:123
152089952,2cyclictest1816-21cat19:50:123
152089952,2cyclictest16981-21awk22:15:143
152089952,2cyclictest15923-21gltestperf20:20:133
152089951,3cyclictest8945-21expr20:05:123
152089951,3cyclictest30094-21expr19:40:123
152089951,1cyclictest934-21kworker/u8:000:30:103
152089950,4cyclictest5568-21seq19:55:553
151969951,3cyclictest31944-21/usr/sbin/munin19:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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