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2026-08-19 - 10:09
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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 376 highest latencies:
System rackdslot4.osadl.org (updated Wed Aug 19, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310382204169,23sleep30-21swapper/319:08:513
308292203171,21sleep10-21swapper/119:06:081
309272202168,22sleep20-21swapper/219:07:262
310402201167,22sleep00-21swapper/019:08:520
3048821450,6sleep23142199cyclictest20:10:282
671121370,3sleep13142099cyclictest22:40:141
21862750,25sleep09-21ksoftirqd/021:25:200
31421996931,7cyclictest33-21ksoftirqd/222:05:262
31421996535,4cyclictest33-21ksoftirqd/219:54:592
31421996435,4cyclictest33-21ksoftirqd/221:15:012
31421996331,7cyclictest33-21ksoftirqd/222:50:252
31421996231,4cyclictest33-21ksoftirqd/219:25:132
31421996229,6cyclictest33-21ksoftirqd/222:40:002
31421996229,6cyclictest33-21ksoftirqd/221:50:132
31421996225,4cyclictest33-21ksoftirqd/223:20:222
3142299613,10cyclictest30804-21ls00:35:013
3142299613,10cyclictest30804-21ls00:35:003
31421996131,5cyclictest33-21ksoftirqd/220:05:202
31421996129,6cyclictest33-21ksoftirqd/221:40:152
31421996129,6cyclictest33-21ksoftirqd/219:45:262
31421996129,6cyclictest33-21ksoftirqd/219:30:172
31421996128,6cyclictest33-21ksoftirqd/220:00:292
31421996128,5cyclictest33-21ksoftirqd/220:30:132
31421996127,8cyclictest33-21ksoftirqd/219:15:202
31421996126,7cyclictest33-21ksoftirqd/200:15:242
3142299603,12cyclictest27411-21sed20:05:233
31421996030,5cyclictest33-21ksoftirqd/222:15:202
31421996028,6cyclictest33-21ksoftirqd/221:25:152
3142299596,9cyclictest8175-21sshd22:40:443
3142299595,12cyclictest2927-21gzip20:20:233
31421995929,8cyclictest33-21ksoftirqd/222:45:142
31421995927,6cyclictest33-21ksoftirqd/221:05:162
31421995927,6cyclictest33-21ksoftirqd/220:20:162
3142299587,10cyclictest12546-21grep23:55:243
3142299582,10cyclictest1377-21cpuspeed_turbos23:35:143
3142299582,10cyclictest0-21swapper/320:35:013
3142299581,17cyclictest0-21swapper/323:05:243
31421995830,4cyclictest33-21ksoftirqd/222:40:142
31421995829,6cyclictest33-21ksoftirqd/222:25:142
31421995829,5cyclictest33-21ksoftirqd/223:05:212
31421995829,4cyclictest33-21ksoftirqd/221:40:002
31421995828,6cyclictest33-21ksoftirqd/200:10:162
31421995828,5cyclictest33-21ksoftirqd/200:00:142
31421995828,5cyclictest33-21ksoftirqd/200:00:142
31421995827,6cyclictest33-21ksoftirqd/223:55:202
31421995827,5cyclictest33-21ksoftirqd/200:30:232
31421995827,5cyclictest33-21ksoftirqd/200:30:232
3142299576,11cyclictest16827-21sort23:00:193
3142299576,11cyclictest16827-21sort23:00:193
3142299574,17cyclictest6593-21wc19:25:113
3142299574,10cyclictest25801-21latency_hist23:20:013
31421995732,8cyclictest33-21ksoftirqd/221:55:172
31421995730,6cyclictest33-21ksoftirqd/222:20:152
31421995729,5cyclictest33-21ksoftirqd/221:30:132
31421995728,6cyclictest33-21ksoftirqd/223:00:152
31421995728,6cyclictest33-21ksoftirqd/223:00:152
31421995727,6cyclictest33-21ksoftirqd/222:10:172
31421995727,6cyclictest33-21ksoftirqd/200:05:282
3142299567,16cyclictest30346-21awk23:25:273
3142299565,10cyclictest6352-21date20:30:013
3142299565,10cyclictest22849-21grep19:55:253
3142299564,9cyclictest461-21dbus-daemon22:00:263
3142299564,10cyclictest7965-21ssh21:35:283
3142299562,11cyclictest12119-21sed22:50:193
31421995629,4cyclictest33-21ksoftirqd/223:35:182
31421995628,4cyclictest33-21ksoftirqd/219:35:142
31421995627,6cyclictest33-21ksoftirqd/223:15:152
31421995627,4cyclictest33-21ksoftirqd/220:45:172
31421995626,4cyclictest33-21ksoftirqd/221:45:262
31421995626,4cyclictest33-21ksoftirqd/220:25:132
31421995625,6cyclictest33-21ksoftirqd/200:25:212
31421995625,5cyclictest33-21ksoftirqd/220:55:142
31421995624,5cyclictest33-21ksoftirqd/220:35:142
31421995620,6cyclictest33-21ksoftirqd/221:25:012
3142099567,7cyclictest16355-21grep23:00:161
3142099567,7cyclictest16355-21grep23:00:161
3142299557,16cyclictest536-21timerandwakeup21:20:293
3142299554,9cyclictest9072-21/usr/sbin/munin20:35:253
3142299554,12cyclictest16771-21tune2fs00:05:203
3142299553,12cyclictest12497-21sed19:35:193
3142299553,11cyclictest8944-21/usr/sbin/munin19:30:203
3142299553,10cyclictest27273-21netstat23:20:203
3142299550,14cyclictest0-21swapper/322:55:213
3142299550,11cyclictest0-21swapper/321:40:183
31421995526,7cyclictest33-21ksoftirqd/223:10:142
31421995525,5cyclictest33-21ksoftirqd/223:50:262
31421995525,4cyclictest33-21ksoftirqd/222:00:242
3142099557,5cyclictest15063-21sed19:40:201
3142099556,6cyclictest16643-21grep21:55:151
31420995524,8cyclictest25-21ksoftirqd/119:11:061
31420995524,8cyclictest25-21ksoftirqd/119:11:061
3142299547,9cyclictest5203-21grep23:40:233
3142299545,9cyclictest29914-21latency21:15:193
3142299544,9cyclictest776-21vmstat20:15:283
3142299544,10cyclictest21422-21egrep22:05:133
3142299543,9cyclictest21707-21wc21:00:143
3142299543,11cyclictest21337-21date21:00:013
3142299543,10cyclictest25304-21processes21:05:243
3142299542,18cyclictest16997-21fschecks_count21:55:183
3142299542,11cyclictest22022-21sed23:10:203
3142299542,11cyclictest16139-21apt-config21:55:003
31421995423,4cyclictest33-21ksoftirqd/223:30:142
31421995423,4cyclictest33-21ksoftirqd/223:30:142
3142099546,5cyclictest26482-21cpuspeed_turbos22:15:131
3142299534,9cyclictest31353-21cpuspeed_turbos22:25:143
3142299533,11cyclictest29575-21cut22:20:193
3142299532,12cyclictest27483-21sed22:15:213
3142299532,11cyclictest8962-21cstates22:45:133
3142299531,10cyclictest0-21swapper/300:10:153
3142299530,18cyclictest0-21swapper/319:20:203
31421995327,8cyclictest33-21ksoftirqd/221:05:002
31421995323,4cyclictest33-21ksoftirqd/220:50:252
31421995317,9cyclictest33-21ksoftirqd/223:40:222
3142099536,5cyclictest3745-21ls21:30:001
3142099535,6cyclictest11041-21latency_hist23:55:001
3142299525,11cyclictest28248-21awk21:10:283
3142299523,9cyclictest32370-21ps00:35:233
3142299522,17cyclictest24045-21cpuspeed_turbos22:10:143
3142299522,11cyclictest18236-21sed20:50:263
3142299520,18cyclictest0-21swapper/321:30:013
3142299520,11cyclictest0-21swapper/319:50:143
31421995224,4cyclictest33-21ksoftirqd/200:35:132
31421995218,9cyclictest33-21ksoftirqd/221:15:242
31421995216,9cyclictest33-21ksoftirqd/200:20:242
3142099525,6cyclictest30923-21latency_hist23:30:011
3142299513,12cyclictest13108-21sed21:45:283
3142299511,10cyclictest4130-21cstates21:30:143
31422995110,15cyclictest15110-21kernelversion19:40:213
31421995116,8cyclictest33-21ksoftirqd/219:55:172
3142099516,7cyclictest6969-21cut20:30:161
3142099516,6cyclictest29078-21cpuspeed_turbos20:10:141
3142099515,6cyclictest21800-21idleruntime00:15:181
3142099515,6cyclictest10597-21grep21:40:261
3142299506,11cyclictest14854-21awk00:00:233
3142299506,11cyclictest14854-21awk00:00:233
3142299504,11cyclictest4212-21df_abs22:35:153
3142299504,10cyclictest11920-21expr20:40:143
3142299501,18cyclictest0-21swapper/300:25:283
31421995038,3cyclictest33-21ksoftirqd/219:45:002
31421995024,4cyclictest33-21ksoftirqd/223:25:122
3142099505,7cyclictest29642-21sed22:20:191
3142099504,7cyclictest31990-21idleruntime20:15:171
3142099504,6cyclictest28852-21expr00:30:131
3142099504,6cyclictest28852-21expr00:30:131
3142099503,7cyclictest24161-21cstates21:05:141
3142299495,12cyclictest3151-21awk19:15:263
3142299494,17cyclictest25621-21sed20:00:293
3142299494,11cyclictest503-21sed23:30:293
3142299494,11cyclictest503-21sed23:30:293
3142299493,17cyclictest25886-21latency_hist00:25:003
3142299493,16cyclictest29117-21cstates20:10:143
3142299490,17cyclictest0-21swapper/320:45:253
3142299490,11cyclictest31435-21/usr/sbin/munin19:10:243
3142299490,11cyclictest31435-21/usr/sbin/munin19:10:243
31421994923,4cyclictest33-21ksoftirqd/222:30:132
31421994923,4cyclictest33-21ksoftirqd/222:30:132
31421994920,4cyclictest33-21ksoftirqd/220:15:162
31421994919,6cyclictest33-21ksoftirqd/222:55:132
31420994920,8cyclictest25-21ksoftirqd/122:12:521
3142299483,10cyclictest1470-21expr22:30:143
3142299483,10cyclictest1470-21expr22:30:143
3142199488,3cyclictest33-21ksoftirqd/219:10:162
3142199488,3cyclictest33-21ksoftirqd/219:10:162
31421994815,8cyclictest33-21ksoftirqd/219:20:142
31421994814,8cyclictest33-21ksoftirqd/220:40:242
3142099484,6cyclictest19200-21cpuspeed_turbos19:50:141
3142099484,5cyclictest23835-21expr00:20:121
31420994819,8cyclictest25-21ksoftirqd/122:48:261
3142299472,14cyclictest17542-21irqrtprio19:45:213
3142099474,7cyclictest18954-21date19:50:001
3142099474,6cyclictest4993-21sed21:30:201
3142099474,4cyclictest0-21swapper/120:55:321
3142099473,6cyclictest12435-21missed_timers21:45:221
3142099472,6cyclictest241ktimersoftd/119:30:191
3142099470,7cyclictest25-21ksoftirqd/123:45:141
3142299464,8cyclictest7658-21sendmail_mailqu23:45:253
3142099464,6cyclictest24402-21df_abs20:00:151
3142099462,8cyclictest13917-21cstates00:00:141
3142099462,8cyclictest13917-21cstates00:00:141
31420994618,6cyclictest25-21ksoftirqd/121:17:391
3142099454,6cyclictest13640-21date22:55:001
3142099453,5cyclictest2491-21cut23:35:221
3142299443,15cyclictest21415-21cstates00:15:153
3142099443,6cyclictest16598-21cstates00:05:181
31420994419,7cyclictest25-21ksoftirqd/120:54:531
31421994332,2cyclictest33-21ksoftirqd/223:45:272
3142099420,10cyclictest11562-21apt-get20:40:131
3141999428,6cyclictest9-21ksoftirqd/023:10:140
31419994214,3cyclictest9-21ksoftirqd/022:30:000
31420994114,9cyclictest25-21ksoftirqd/121:40:011
31419994126,4cyclictest9-21ksoftirqd/019:10:170
31419994126,4cyclictest9-21ksoftirqd/019:10:170
3142099405,6cyclictest22887-21run-parts22:05:261
31419994036,2cyclictest9-21ksoftirqd/020:40:000
31419994035,3cyclictest9-21ksoftirqd/022:10:000
31419994035,3cyclictest9-21ksoftirqd/021:20:000
31419994034,3cyclictest9-21ksoftirqd/020:55:000
3142099396,6cyclictest955-21cut00:40:011
3141999399,10cyclictest9-21ksoftirqd/000:15:170
3141999396,6cyclictest9-21ksoftirqd/022:40:000
31419993934,3cyclictest9-21ksoftirqd/021:55:000
31419993934,3cyclictest9-21ksoftirqd/021:50:000
31419993834,2cyclictest9-21ksoftirqd/021:40:000
31419993833,3cyclictest9-21ksoftirqd/022:05:000
31419993833,3cyclictest9-21ksoftirqd/019:35:260
31419993832,3cyclictest9-21ksoftirqd/022:45:200
3141999382,6cyclictest9-21ksoftirqd/020:10:000
31419993811,5cyclictest9-21ksoftirqd/000:15:000
31420993714,6cyclictest25-21ksoftirqd/123:11:221
3142099370,36cyclictest24943-21kworker/1:022:31:451
3142099370,36cyclictest24943-21kworker/1:022:31:451
3141999378,3cyclictest9-21ksoftirqd/000:35:150
3141999378,10cyclictest9-21ksoftirqd/019:40:180
31419993733,3cyclictest9-21ksoftirqd/023:49:590
31419993732,3cyclictest9-21ksoftirqd/023:45:000
31419993732,3cyclictest9-21ksoftirqd/023:00:150
31419993732,3cyclictest9-21ksoftirqd/023:00:150
31419993732,3cyclictest9-21ksoftirqd/022:15:000
31419993732,3cyclictest9-21ksoftirqd/020:40:140
31419993732,3cyclictest9-21ksoftirqd/020:35:000
31419993732,3cyclictest9-21ksoftirqd/020:30:010
31419993732,3cyclictest9-21ksoftirqd/020:05:000
31419993732,3cyclictest9-21ksoftirqd/019:55:190
31419993732,2cyclictest9-21ksoftirqd/021:05:130
31419993731,3cyclictest9-21ksoftirqd/000:25:200
31419993731,3cyclictest9-21ksoftirqd/000:20:140
31419993730,4cyclictest9-21ksoftirqd/023:27:260
3141999371,5cyclictest9-21ksoftirqd/000:00:010
31420993630,4cyclictest25-21ksoftirqd/123:21:031
31420993630,4cyclictest25-21ksoftirqd/121:00:291
31420993629,5cyclictest25-21ksoftirqd/120:29:081
31420993621,6cyclictest25-21ksoftirqd/119:29:491
31420993616,6cyclictest25-21ksoftirqd/123:40:241
3141999367,6cyclictest9-21ksoftirqd/023:50:260
3141999365,6cyclictest9-21ksoftirqd/022:15:200
3141999364,6cyclictest121rcu_preempt21:40:140
3141999364,2cyclictest121rcu_preempt22:50:200
31419993632,3cyclictest9-21ksoftirqd/023:35:000
31419993632,3cyclictest9-21ksoftirqd/023:35:000
31419993632,2cyclictest9-21ksoftirqd/022:30:120
31419993632,2cyclictest9-21ksoftirqd/022:30:120
31419993631,3cyclictest9-21ksoftirqd/023:20:160
31419993631,3cyclictest9-21ksoftirqd/022:40:250
31419993631,3cyclictest9-21ksoftirqd/021:55:000
31419993631,3cyclictest9-21ksoftirqd/021:10:230
31419993631,3cyclictest9-21ksoftirqd/019:45:210
31419993631,3cyclictest9-21ksoftirqd/019:25:100
31419993631,3cyclictest9-21ksoftirqd/000:00:150
31419993631,3cyclictest9-21ksoftirqd/000:00:140
31419993614,10cyclictest9-21ksoftirqd/000:10:000
31420993530,3cyclictest25-21ksoftirqd/122:40:001
31420993530,3cyclictest25-21ksoftirqd/119:55:141
31420993516,6cyclictest25-21ksoftirqd/121:50:131
3141999356,2cyclictest9-21ksoftirqd/021:00:220
3141999354,6cyclictest9-21ksoftirqd/020:20:190
31419993531,2cyclictest9-21ksoftirqd/022:55:250
31419993530,3cyclictest9-21ksoftirqd/021:25:000
31419993530,3cyclictest9-21ksoftirqd/020:55:150
31419993530,3cyclictest9-21ksoftirqd/019:50:200
31419993530,3cyclictest9-21ksoftirqd/019:15:140
31419993530,3cyclictest1319-21snmpd23:15:320
31419993529,4cyclictest9-21ksoftirqd/020:46:240
31419993529,3cyclictest9-21ksoftirqd/019:20:190
31419993529,3cyclictest9-21ksoftirqd/000:30:180
31419993529,3cyclictest9-21ksoftirqd/000:30:180
31420993428,4cyclictest25-21ksoftirqd/122:26:171
31420993428,4cyclictest25-21ksoftirqd/119:37:041
31420993413,6cyclictest25-21ksoftirqd/123:56:341
31420993411,7cyclictest25-21ksoftirqd/121:24:211
31419993430,2cyclictest9-21ksoftirqd/023:05:180
31419993429,3cyclictest9-21ksoftirqd/023:35:130
31419993429,3cyclictest9-21ksoftirqd/021:30:140
31419993428,3cyclictest9-21ksoftirqd/020:15:150
31419993428,3cyclictest9-21ksoftirqd/020:10:290
3142299332,4cyclictest401ktimersoftd/323:50:233
31420993328,3cyclictest25-21ksoftirqd/123:10:011
3142099331,30cyclictest21525-21kworker/1:223:15:451
3141999334,2cyclictest121rcu_preempt22:20:240
31419993328,3cyclictest9-21ksoftirqd/019:30:130
31420993227,3cyclictest25-21ksoftirqd/122:58:591
3142099322,5cyclictest25-21ksoftirqd/122:00:501
31420993215,6cyclictest25-21ksoftirqd/121:10:141
31420993026,2cyclictest25-21ksoftirqd/119:20:141
31420993026,2cyclictest25-21ksoftirqd/119:15:141
31420993024,4cyclictest25-21ksoftirqd/123:31:061
31420993024,4cyclictest25-21ksoftirqd/123:31:061
31420993024,4cyclictest25-21ksoftirqd/120:36:301
31420992924,3cyclictest25-21ksoftirqd/100:10:111
31420992923,4cyclictest25-21ksoftirqd/120:48:291
31420992923,4cyclictest25-21ksoftirqd/120:09:541
31420992825,1cyclictest231rcuc/120:22:311
31420992420,2cyclictest25-21ksoftirqd/100:25:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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