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2026-04-20 - 20:46
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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 Mon Apr 20, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246092313287,17sleep20-21swapper/207:05:582
248982311279,22sleep10-21swapper/107:09:351
245972262232,20sleep00-21swapper/007:05:490
248902258231,18sleep30-21swapper/307:09:293
83552640,0sleep20-21swapper/212:21:432
22292630,0sleep0131rcuc/011:00:090
92202590,0sleep00-21swapper/009:45:180
24992590,0sleep10-21swapper/109:40:491
98782560,0sleep00-21swapper/010:25:130
309922560,0sleep20-21swapper/211:17:142
58422550,0sleep228-21ksoftirqd/211:41:032
292592540,0sleep20-21swapper/209:37:492
289482210,0sleep30-21swapper/309:18:013
314792160,0sleep00-21swapper/010:57:540
2504999150,12cyclictest30569-21sh10:37:311
2504599150,11cyclictest23965-21ssh10:14:090
189262150,0sleep30-21swapper/311:10:133
2504599142,9cyclictest0-21swapper/010:48:340
2504599140,10cyclictest5754-21ssh12:00:370
2504599140,10cyclictest19383-21ssh12:28:530
2504599131,9cyclictest19304-21grep08:05:170
2504599130,9cyclictest7888-21ssh11:23:020
2504599130,9cyclictest28071-21ssh10:35:360
2504599130,9cyclictest27895-21ssh12:14:350
2504599130,10cyclictest7764-21ssh09:25:090
2504599130,10cyclictest3884-21awk07:30:210
2504599130,10cyclictest3749-21ssh10:20:500
2504599130,10cyclictest32203-21ssh11:18:100
2504599130,10cyclictest31741-21ssh12:16:100
2504599130,10cyclictest31189-21ssh11:36:580
2504599130,10cyclictest29796-21ssh10:17:170
2504599130,10cyclictest27938-21ssh09:36:490
2504599130,10cyclictest2719-21ssh12:38:200
2504599130,10cyclictest26258-21gzip08:20:180
2504599130,10cyclictest25369-21ssh12:32:070
2504599130,10cyclictest24669-21ssh10:34:210
2504599130,10cyclictest24192-21ssh10:53:350
2504599130,10cyclictest1474-21find07:25:190
2504599130,10cyclictest12521-21ssh11:05:320
2504599122,8cyclictest658-21snmpd09:43:100
2504599120,9cyclictest31848-21ssh09:20:040
2504599120,9cyclictest31600-21ssh11:56:520
2504599120,9cyclictest3089-21ssh11:40:090
2504599120,9cyclictest2639-21ssh10:00:340
2504599120,9cyclictest25805-21ssh09:15:330
2504599120,9cyclictest23667-21ssh11:32:320
2504599120,9cyclictest21579-21ssh11:11:110
2504599120,9cyclictest21501-21ssh11:50:280
2504599120,9cyclictest20267-21ssh09:12:400
2504599120,9cyclictest18377-21ssh09:50:240
2504599120,9cyclictest18142-21ssh09:30:360
2504599120,9cyclictest14567-21ssh12:05:500
2504599120,9cyclictest13927-21chrt07:55:060
2504599120,9cyclictest11413-21chrt10:05:590
2504599120,9cyclictest11284-21ssh11:45:080
2504599120,9cyclictest10634-21ssh11:25:010
2504599120,7cyclictest6389-21ssh10:42:310
2504599120,6cyclictest15006-21diskmemload09:56:070
2504599120,10cyclictest9176-21ssh12:22:210
2504999113,5cyclictest658-21snmpd08:14:321
2504999110,3cyclictest28055-21ssh09:56:321
2504999110,2cyclictest6185-21ssh10:42:211
2504999110,2cyclictest23257-21ssh09:14:591
2504999110,2cyclictest15437-21ssh11:47:081
2504999110,2cyclictest12541-21unixbench_singl11:25:191
2504999110,1cyclictest4529-21sensors_temp11:40:191
2504999110,1cyclictest0-21swapper/110:28:311
2504599110,9cyclictest663-21runrttasks09:05:280
2504599110,8cyclictest2266-21basename08:40:160
2504599110,7cyclictest32761-21ntpq08:35:190
2504599110,7cyclictest30453-21cpuspeed_turbos07:20:120
155752110,0sleep20-21swapper/211:27:382
2504999102,2cyclictest275-21systemd-journal08:25:001
2504999100,3cyclictest26894-21ssh11:54:391
2504999100,3cyclictest24303-21apt09:55:011
2504999100,3cyclictest2145-21cron07:30:001
2504999100,2cyclictest9533-21ssh12:22:381
2504999100,2cyclictest4863-21sh10:21:431
2504999100,2cyclictest22858-21/usr/sbin/munin08:15:151
2504999100,2cyclictest22704-21ssh11:12:091
2504999100,2cyclictest13658-21ssh09:48:081
2504999100,1cyclictest9571-21date08:55:201
2504999100,1cyclictest31380-21ssh11:37:071
2504999100,1cyclictest16030-21ssh09:30:101
2504999100,1cyclictest14568-21ssh12:05:501
2504599100,9cyclictest0-21swapper/007:10:110
2504599100,8cyclictest11713-21/usr/sbin/munin07:50:150
2504599100,7cyclictest5561-21taskset08:47:090
2504599100,7cyclictest29554-21chrt08:30:050
2504599100,6cyclictest5543-21netstat07:35:170
2504599100,6cyclictest20629-21/usr/sbin/munin08:10:150
2504599100,6cyclictest12000-21run-parts09:00:150
2504599100,6cyclictest11002-21sshd07:48:130
2504599100,5cyclictest0-21swapper/008:55:180
250499993,3cyclictest275-21systemd-journal08:40:121
250499992,3cyclictest658-21snmpd11:07:171
250499992,2cyclictest658-21snmpd10:10:081
250499992,2cyclictest10133-21gzip10:05:201
250499991,3cyclictest927-21grep08:35:211
250499990,3cyclictest9551-21users09:25:201
250499990,3cyclictest31671-21ls07:20:191
250499990,3cyclictest30259-21ssh12:15:191
250499990,3cyclictest275-21systemd-journal11:25:001
250499990,3cyclictest27283-21munin-node07:15:021
250499990,3cyclictest19067-21cut10:50:151
250499990,3cyclictest18377-21sed10:30:121
250499990,3cyclictest17214-21cut08:00:191
250499990,3cyclictest11280-21latency_hist07:50:001
250499990,2cyclictest504-21dbus-daemon07:45:001
250499990,2cyclictest28478-21diskmemload10:55:321
250499990,2cyclictest27882-21sh11:55:131
250499990,2cyclictest27623-21irqstats11:15:161
250499990,2cyclictest275-21systemd-journal11:05:021
250499990,2cyclictest275-21systemd-journal10:05:011
250499990,2cyclictest24355-21ssh09:35:131
250499990,1cyclictest27353-21/usr/sbin/munin08:25:111
250499990,1cyclictest21998-21hddtemp_smartct12:30:141
250459993,5cyclictest7368-21timerandwakeup08:50:200
250459992,6cyclictest16702-21tune2fs08:00:150
250459991,4cyclictest663-21runrttasks08:28:240
250459990,8cyclictest8387-21cat07:40:220
250459990,8cyclictest28950-21ls07:15:150
250459990,6cyclictest663-21runrttasks08:18:580
250539983,3cyclictest275-21systemd-journal07:48:352
250539983,2cyclictest8360-21awk10:05:012
250499982,1cyclictest21243-21grep12:10:141
250499981,3cyclictest658-21snmpd07:37:391
250499981,2cyclictest12941-21/usr/sbin/munin07:50:181
250499981,1cyclictest30199-21hwlatdetect08:30:141
250499981,1cyclictest0-21swapper/110:45:141
250499980,3cyclictest4362-21fschecks_time08:45:141
250499980,3cyclictest3606-21diskmemload12:00:101
250499980,3cyclictest29467-21sh12:35:071
250499980,3cyclictest26097-21cut10:15:141
250499980,3cyclictest24827-21ntp_kernel_pll_09:15:171
250499980,3cyclictest18230-21ssh12:27:591
250499980,2cyclictest6239-21cut08:50:131
250499980,2cyclictest3533-21awk07:30:191
250499980,2cyclictest28989-21grep07:15:161
250499980,2cyclictest19703-21cut11:30:131
250499980,2cyclictest19351-21grep08:05:181
250499980,2cyclictest13481-21cut09:05:151
250499980,2cyclictest11789-21sh09:00:151
250499980,1cyclictest275-21systemd-journal09:20:041
250499980,1cyclictest275-21systemd-journal07:55:151
8111270,0sleep20-21swapper/209:25:122
250589973,1cyclictest0-21swapper/312:24:073
250589970,7cyclictest27917-21ssh12:34:053
250539973,3cyclictest658-21snmpd10:49:212
250539973,3cyclictest658-21snmpd10:14:572
250539973,3cyclictest275-21systemd-journal08:11:132
250539973,2cyclictest275-21systemd-journal12:30:002
250539971,4cyclictest275-21systemd-journal09:00:022
20413270,0sleep20-21swapper/212:29:402
250589966,0cyclictest0-21swapper/311:18:123
250589963,2cyclictest8975-21pmu-power09:25:193
250589963,2cyclictest663-21runrttasks08:50:303
250589963,2cyclictest658-21snmpd12:01:083
250589963,2cyclictest658-21snmpd10:47:003
250589963,2cyclictest4336-21sh10:21:193
250589963,2cyclictest19543-11brltty10:05:553
250589963,2cyclictest12984-21ssh12:25:103
250589963,1cyclictest0-21swapper/312:08:563
250589963,1cyclictest0-21swapper/310:51:363
250589963,1cyclictest0-21swapper/310:31:173
250589962,3cyclictest658-21snmpd12:37:303
250589962,3cyclictest658-21snmpd12:14:013
250589962,3cyclictest658-21snmpd11:58:383
250589962,3cyclictest658-21snmpd11:45:113
250589962,3cyclictest658-21snmpd11:41:443
250589962,3cyclictest658-21snmpd11:30:203
250589962,3cyclictest658-21snmpd09:40:093
250589962,3cyclictest658-21snmpd08:27:293
250589962,3cyclictest658-21snmpd07:59:123
250589962,3cyclictest658-21snmpd07:40:403
250589962,3cyclictest658-21snmpd07:36:253
250589962,3cyclictest658-21snmpd07:32:553
250589962,3cyclictest658-21snmpd07:20:093
250589962,3cyclictest658-21snmpd07:15:203
250589962,3cyclictest314-21cat09:20:173
250589962,3cyclictest275-21systemd-journal11:00:013
250589962,3cyclictest2455-21ls11:00:103
250589962,3cyclictest2038-21expr10:40:133
250589962,3cyclictest1672-21uname10:00:163
250589962,3cyclictest11527-21cat11:25:143
250589961,3cyclictest275-21systemd-journal07:45:123
250589960,6cyclictest0-21swapper/310:35:373
250589960,6cyclictest0-21swapper/310:18:113
250589960,5cyclictest25312-21cpuspeed_turbos08:20:133
250539966,0cyclictest0-21swapper/211:30:112
250539966,0cyclictest0-21swapper/209:47:422
250539963,2cyclictest7539-21ssh11:03:052
250539963,2cyclictest6626-21ssh10:42:412
250539963,2cyclictest658-21snmpd11:53:352
250539963,2cyclictest658-21snmpd10:37:062
250539963,2cyclictest658-21snmpd08:17:382
250539963,2cyclictest658-21snmpd07:10:422
250539963,2cyclictest545-21mailstats08:35:202
250539963,2cyclictest27107-21rm11:35:022
250539963,2cyclictest25253-21ssh10:54:252
250539963,1cyclictest0-21swapper/211:46:402
250539963,1cyclictest0-21swapper/210:20:112
250539963,1cyclictest0-21swapper/209:17:582
250539962,3cyclictest658-21snmpd12:10:552
250539962,3cyclictest658-21snmpd11:23:502
250539962,3cyclictest658-21snmpd09:58:352
250539962,3cyclictest658-21snmpd09:54:172
250539962,3cyclictest658-21snmpd09:42:062
250539962,3cyclictest658-21snmpd09:12:242
250539962,3cyclictest658-21snmpd08:45:222
250539962,3cyclictest658-21snmpd08:28:582
250539962,3cyclictest658-21snmpd07:44:422
250539962,3cyclictest275-21systemd-journal09:09:082
250539962,3cyclictest20440-21ssh09:32:222
250539962,3cyclictest16363-21ssh12:07:152
250539962,3cyclictest12898-21grep07:50:182
250539962,3cyclictest11087-21cat10:25:212
250539962,1cyclictest0-21swapper/212:35:082
250539961,4cyclictest658-21snmpd10:56:212
250539960,6cyclictest0-21swapper/211:11:552
250539960,6cyclictest0-21swapper/211:08:472
250539960,5cyclictest32453-21seq09:20:142
250539960,5cyclictest2936-21sh11:59:512
250539960,5cyclictest13283-21ssh10:07:282
250539960,3cyclictest8035-21perf08:55:002
250539960,0cyclictest31189-21ssh10:18:232
250539960,0cyclictest0-21swapper/212:16:452
16672260,0sleep30-21swapper/309:30:143
10272260,0sleep3331rcuc/309:45:283
250589953,1cyclictest32199-21sh08:35:153
250589953,1cyclictest24324-21sh09:35:123
250589952,3cyclictest10684-21tr11:05:133
250589952,2cyclictest9404-21ssh10:25:073
250589952,2cyclictest658-21snmpd08:00:033
250589952,2cyclictest4655-21load08:45:153
250589952,2cyclictest364-21expr07:25:143
250589952,2cyclictest30736-11brltty07:10:133
250589952,2cyclictest29962-21expr08:30:133
250589952,2cyclictest28846-21sh12:15:103
250589952,2cyclictest27210-21ssh11:35:063
250589952,2cyclictest24992-21cpuspeed_turbos09:55:133
250589952,2cyclictest23169-21expr08:15:133
250589952,2cyclictest21343-21uname08:10:153
250589952,2cyclictest20062-21chrt08:06:143
250589952,2cyclictest19860-21expr11:50:123
250589952,2cyclictest1815-21grep08:40:133
250589952,2cyclictest16875-21expr09:50:143
250589952,2cyclictest13357-21expr09:05:133
250589952,2cyclictest10677-21apt-key09:00:013
250589951,3cyclictest8866-21tail08:55:143
250589951,3cyclictest658-21snmpd07:50:033
250589951,3cyclictest2656-21/usr/sbin/munin11:20:163
250589951,2cyclictest275-21systemd-journal10:10:133
250589950,4cyclictest17752-21ssh09:10:443
250539952,2cyclictest9469-21run-parts08:55:182
250539952,2cyclictest658-21snmpd08:20:142
250539952,2cyclictest658-21snmpd07:57:512
250539952,2cyclictest3888-21cat12:00:132
250539952,2cyclictest32568-21seq07:25:122
250539952,2cyclictest30645-21expr07:20:132
250539952,2cyclictest19945-21unixbench_singl08:05:212
250539951,3cyclictest658-21snmpd08:30:102
250539951,3cyclictest5029-21/usr/sbin/munin07:35:142
250539951,3cyclictest3275-21date07:30:172
250539951,3cyclictest27635-21expr07:15:022
250539951,3cyclictest18231-21fschecks_count10:30:122
250539951,3cyclictest1618-21/usr/sbin/munin08:40:162
250539950,4cyclictest16180-21/usr/sbin/munin08:00:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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