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2026-10-20 - 00:54
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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 the highest latencies:
System rackcslot4.osadl.org (updated Mon Oct 19, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7584812314272,28sleep00-21swapper/007:06:390
7587182275215,45sleep10-21swapper/107:09:141
78184621540,4sleep0781849-21gltestperf08:05:170
75892999111105,4cyclictest766913-21kworker/u8:208:26:240
75893599693,44cyclictest876185-21apt-get10:50:121
8214862680,4sleep0821488-21cron09:30:010
75893599630,47cyclictest807448-21diskmemload11:17:081
8366772600,4sleep00-21swapper/009:50:320
75893599592,39cyclictest879432-21apt-get10:55:121
75893599590,9cyclictest785169-21seq08:14:261
75892999593,35cyclictest913416-21apt-get11:45:130
136599590,4rtkit-daemon1364-21rtkit-daemon12:28:470
9464262580,7sleep00-21swapper/012:32:070
758935995812,27cyclictest811214-21sh09:15:031
75893599580,8cyclictest775033-21taskset07:46:461
75893599570,5cyclictest790598-21ntpq08:25:221
75893599570,5cyclictest765120-21taskset07:22:131
75893599570,5cyclictest759650-21sed07:10:171
75893599560,2cyclictest8917432sleep111:12:461
75892999561,29cyclictest853337-21sh10:15:210
75893599557,34cyclictest807448-21diskmemload10:02:371
75893599557,33cyclictest807448-21diskmemload12:19:281
75893599550,8cyclictest769000-21seq07:31:261
75893599550,3cyclictest824333-21seq09:33:331
75893599550,3cyclictest773240-21runrttasks07:43:421
75893599541,6cyclictest807448-21diskmemload12:12:221
75893599540,40cyclictest807448-21diskmemload09:51:301
75893599540,3cyclictest888522-21ssh11:08:051
75893599532,10cyclictest906123-21ssh11:35:031
75893599530,3cyclictest839747-21memory09:55:211
75893599530,3cyclictest807448-21diskmemload12:28:451
75893599530,36cyclictest799583-1kworker/1:2H09:25:271
75893599530,2cyclictest873292-21ssh10:45:171
75892999532,32cyclictest923375-21apt-get12:00:120
75892999531,29cyclictest807448-21diskmemload10:28:170
75893599521,5cyclictest807448-21diskmemload11:31:131
75893599521,5cyclictest807448-21diskmemload10:07:571
75893599521,30cyclictest807448-21diskmemload11:01:271
758929995213,20cyclictest911589-21sh11:41:010
75893599516,26cyclictest782-21runrttasks07:51:481
75893599516,25cyclictest807448-21diskmemload11:46:231
75893599511,6cyclictest807448-21diskmemload12:31:301
75893599511,5cyclictest807448-21diskmemload12:38:391
75893599511,5cyclictest807448-21diskmemload12:38:391
75893599511,5cyclictest807448-21diskmemload11:53:541
75893599511,3cyclictest807448-21diskmemload10:17:071
75893599510,9cyclictest767280-21seq07:29:111
75893599510,6cyclictest807448-21diskmemload11:43:121
75892999519,21cyclictest0-21swapper/010:33:320
75892999511,32cyclictest906178-21apt-get11:35:110
75892999511,32cyclictest831955-21apt-get09:45:130
75892999511,30cyclictest902230-21seq11:28:560
75892999510,28cyclictest847892-21ssh10:07:340
75893599501,8cyclictest925335-21ssh12:01:551
75893599501,7cyclictest922039-21ssh11:57:161
75893599501,6cyclictest807448-21diskmemload09:20:361
75893599501,5cyclictest807448-21diskmemload10:14:441
75893599501,5cyclictest807448-21diskmemload09:47:541
75893599501,5cyclictest807448-21diskmemload09:11:081
75893599501,4cyclictest807448-21diskmemload12:06:201
75893599501,3cyclictest785232-21apt-get08:15:061
75893599500,9cyclictest830951-21ssh09:42:501
75893599500,8cyclictest870865-21ssh10:40:411
75892999508,20cyclictest869365-21/usr/sbin/munin10:40:150
75892999501,33cyclictest808051-21perl09:10:170
75892999501,27cyclictest839113-21apt-get09:55:160
75892999500,34cyclictest916683-21apt-get11:50:120
75893599495,27cyclictest1-21systemd08:50:011
75893599491,9cyclictest860663-21ssh10:25:351
75893599491,6cyclictest807448-21diskmemload10:34:081
75893599491,6cyclictest807448-21diskmemload09:38:131
75893599491,6cyclictest807448-21diskmemload09:38:131
75893599491,5cyclictest803681-21/usr/sbin/munin09:00:271
75893599490,9cyclictest858712-21seq10:24:231
75893599490,8cyclictest902524-21ssh11:29:441
75893599490,8cyclictest898016-21ssh11:21:441
75893599490,8cyclictest866016-21ssh10:35:061
75893599490,7cyclictest939290-21ssh12:22:311
75892999491,33cyclictest807448-21diskmemload10:21:500
75892999491,31cyclictest789448-21sendmail-mta08:23:210
75892999491,28cyclictest905085-21ssh11:32:380
75892999490,32cyclictest825137-21apt-get09:35:120
75892999490,32cyclictest825137-21apt-get09:35:110
75893599480,8cyclictest795168-21seq08:35:571
75892999482,31cyclictest872763-21apt-get10:45:140
75892999481,30cyclictest937058-21apt-get12:20:150
75892999481,30cyclictest849060-21apt-get10:10:130
75892999481,30cyclictest785848-21apt-get08:15:140
75892999481,29cyclictest889482-21apt-get11:10:110
758929994811,21cyclictest926951-21expr12:05:160
758929994810,18cyclictest803784-21cpuspeed_turbos09:00:160
75892999480,30cyclictest892801-21apt-get11:15:120
75892999480,26cyclictest813989-21seq09:18:470
75893599470,8cyclictest803148-21seq08:56:401
75892999471,29cyclictest882692-21apt-get11:00:130
75892999471,28cyclictest821757-21apt-get09:30:140
75892999470,32cyclictest896121-21apt-get11:20:130
75892999470,26cyclictest830735-21ssh09:42:120
75892999470,26cyclictest816423-21seq09:20:570
75892999470,24cyclictest800746-21awk08:50:230
75892999470,24cyclictest765498-21cut07:25:010
75892999470,23cyclictest761118-21sed07:15:010
75893599460,2cyclictest789625-21perf08:25:001
75892999461,32cyclictest879406-21ssh10:55:080
75892999461,27cyclictest780584-21sed08:00:260
75892999460,34cyclictest867864-21ssh10:36:380
75892999460,30cyclictest933403-21apt-get12:15:130
75892999460,30cyclictest930108-21apt-get12:10:120
75892999460,30cyclictest803311-21sshd08:58:240
75892999460,29cyclictest876185-21apt-get10:50:100
75892999460,25cyclictest921451-21seq11:55:490
75893599451,7cyclictest761625-21apt-get07:15:111
75893599450,2cyclictest799732-21apt-get08:50:121
75892999450,26cyclictest773805-21awk07:45:140
75892999450,25cyclictest794948-21sed08:35:240
75893599440,9cyclictest792585-21ntp_states08:30:221
75893599440,8cyclictest777740-21entropy07:55:161
75892999447,25cyclictest806440-21ntpq09:05:210
75892999440,32cyclictest772384-21awk07:40:210
75892999440,31cyclictest844495-21sh10:02:170
75892999440,28cyclictest795787-21apt-get08:40:120
75892999440,27cyclictest778611-21sed07:55:240
75892999440,27cyclictest765766-21ls07:25:140
75892999440,24cyclictest886079-21apt-get11:05:130
75893599431,3cyclictest781539-21cpu08:05:131
75893599430,3cyclictest805672-21apt09:05:121
75893599430,3cyclictest770315-21ntp_states07:35:211
75892999431,29cyclictest948866-21/usr/sbin/munin12:35:250
75892999431,29cyclictest948866-21/usr/sbin/munin12:35:240
75892999430,30cyclictest777350-21systemd-run07:55:000
75892999430,26cyclictest784600-21sed08:10:240
75893599420,3cyclictest797299-21sshd08:42:241
75893599420,3cyclictest780530-21sensors_temp08:00:251
75892999421,25cyclictest798539-21awk08:45:230
75892999420,30cyclictest770415-21ps07:35:230
75892999420,29cyclictest759409-21fw_packets07:10:170
75892999420,28cyclictest791813-21apt-get08:30:120
75892999420,23cyclictest767748-21expr07:30:140
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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