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2026-07-16 - 16:37
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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 all highest latencies:
System rackdslot4.osadl.org (updated Thu Jul 16, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591204171,22phc2sys0-21swapper/307:07:553
302032203170,22sleep10-21swapper/107:06:021
304942201167,23sleep20-21swapper/207:09:492
301722201167,23sleep00-21swapper/007:05:370
2083921710,3sleep13080599cyclictest10:05:131
289112830,2sleep00-21swapper/010:20:210
138491730,6ptp4l3080799cyclictest10:08:273
3080499639,15cyclictest0-21swapper/010:40:150
30804996314,17cyclictest20903-21iwlist12:15:170
30804996114,15cyclictest16780-21mailstats11:00:230
30804996012,11cyclictest11929-21sed07:35:200
286492600,2sleep20-21swapper/209:15:162
30804995816,11cyclictest6661-21netstat11:45:200
30804995813,10cyclictest32032-21grep08:15:250
30804995712,17cyclictest13914-21cat10:55:180
3080499570,17cyclictest18179-21/usr/sbin/munin08:55:220
138491570,1ptp4l401ktimersoftd/311:35:233
30804995514,9cyclictest16183-21fschecks_count08:50:130
30804995513,15cyclictest12626-21latency_hist10:55:010
30804995511,15cyclictest0-21swapper/011:50:250
3080499549,15cyclictest0-21swapper/009:40:170
3080499540,16cyclictest1611-21latency09:25:190
30804995314,8cyclictest6656-21memory09:35:210
30804995314,8cyclictest27445-21sshd09:10:400
30804995313,7cyclictest22199-21swap07:55:270
3080499528,14cyclictest0-21swapper/008:30:200
30804995214,7cyclictest18362-21fw_packets12:10:180
30804995214,11cyclictest22832-21dpkg12:20:010
30804995213,8cyclictest3343-21cstates08:25:130
30804995213,7cyclictest4540-21memory07:20:230
30804995213,7cyclictest14671-21unixbench_multi09:50:250
30804995212,16cyclictest2394-21awk07:15:230
3080499520,10cyclictest0-21swapper/011:25:180
30804995112,8cyclictest21396-21ps09:00:190
30804995112,8cyclictest21396-21ps09:00:190
30804995111,7cyclictest9433-21ls07:30:180
30804995011,7cyclictest23163-21apt-get08:00:110
30804995011,7cyclictest13265-21apt-get07:40:110
30804995010,7cyclictest30841-21apt-get07:10:120
84602490,2sleep10-21swapper/110:45:181
236052480,3sleep10-21swapper/111:15:191
50798460,4rtkit-daemon3080599cyclictest11:10:321
30804994610,7cyclictest32026-21ls12:35:260
3080599459,19cyclictest16195-21entropy07:45:151
138491440,0ptp4l401ktimersoftd/307:36:053
138491430,0ptp4l401ktimersoftd/309:51:013
3080499429,7cyclictest19650-21ls10:00:280
138491420,0ptp4l401ktimersoftd/310:45:373
30807994034,3cyclictest41-21ksoftirqd/309:20:003
3080499403,9cyclictest6335-21sed07:25:140
30804994010,12cyclictest32105-21ls09:20:240
3080499400,8cyclictest3170-21df10:35:140
3080499400,8cyclictest15994-21iostat_ios12:05:190
50798390,6rtkit-daemon10783-21expr08:40:141
138491390,0ptp4l401ktimersoftd/312:25:183
30807993833,3cyclictest41-21ksoftirqd/309:40:013
3080499380,7cyclictest16187-21diskstats07:45:140
138491380,1ptp4l9959-21apt-get10:50:043
138491380,1ptp4l0-21swapper/310:42:463
138491380,0ptp4l401ktimersoftd/311:25:293
138491380,0ptp4l401ktimersoftd/310:25:263
30807993732,3cyclictest41-21ksoftirqd/311:20:243
30807993731,4cyclictest41-21ksoftirqd/308:59:333
30805993731,4cyclictest25-21ksoftirqd/107:22:431
3080499378,19cyclictest0-21swapper/008:49:090
3080499378,19cyclictest0-21swapper/008:40:290
30804993710,16cyclictest9181-21mailstats10:45:250
3080499370,8cyclictest1386-21meminfo10:30:190
3080499370,16cyclictest30325-21cpuspeed_turbos10:25:120
30807993630,4cyclictest41-21ksoftirqd/307:33:043
30806993630,4cyclictest33-21ksoftirqd/211:10:492
30806993630,4cyclictest33-21ksoftirqd/210:32:352
30806993630,4cyclictest33-21ksoftirqd/209:39:242
30805993630,4cyclictest25-21ksoftirqd/112:19:201
30805993630,4cyclictest25-21ksoftirqd/111:54:141
30805993630,4cyclictest25-21ksoftirqd/109:41:111
30805993630,4cyclictest25-21ksoftirqd/109:20:431
30805993630,4cyclictest25-21ksoftirqd/109:06:041
30805993630,4cyclictest25-21ksoftirqd/107:31:331
30805993629,5cyclictest25-21ksoftirqd/107:50:551
30805993629,5cyclictest25-21ksoftirqd/107:50:551
30805993618,15cyclictest23354-21df12:20:131
30805993611,22cyclictest5318-21latency_hist09:35:001
3080499369,7cyclictest29131-21ls09:15:200
50798350,2rtkit-daemon0-21swapper/107:40:151
30807993529,4cyclictest41-21ksoftirqd/311:57:573
30807993529,4cyclictest41-21ksoftirqd/310:12:023
30807993529,4cyclictest41-21ksoftirqd/309:14:543
30807993529,4cyclictest41-21ksoftirqd/309:08:083
30807993529,4cyclictest41-21ksoftirqd/308:51:353
30807993529,4cyclictest41-21ksoftirqd/308:13:563
30806993530,3cyclictest33-21ksoftirqd/210:15:092
30806993530,3cyclictest33-21ksoftirqd/208:17:462
30806993529,4cyclictest33-21ksoftirqd/211:46:532
30806993529,4cyclictest33-21ksoftirqd/211:28:272
30806993529,4cyclictest33-21ksoftirqd/209:46:212
30806993529,4cyclictest33-21ksoftirqd/209:04:262
30806993529,4cyclictest33-21ksoftirqd/209:04:262
30805993529,4cyclictest25-21ksoftirqd/111:30:121
30805993529,4cyclictest25-21ksoftirqd/110:43:201
30805993529,4cyclictest25-21ksoftirqd/109:17:481
30805993529,4cyclictest25-21ksoftirqd/107:56:531
3080599350,3cyclictest0-21swapper/112:04:131
3080599350,3cyclictest0-21swapper/112:04:131
3080499358,16cyclictest0-21swapper/008:10:110
30804993530,3cyclictest9-21ksoftirqd/010:16:210
30804993529,4cyclictest9-21ksoftirqd/010:12:390
138491350,1ptp4l401ktimersoftd/308:15:133
135191350,3getstats3080799cyclictest09:45:413
30807993428,4cyclictest41-21ksoftirqd/312:15:373
30807993428,4cyclictest41-21ksoftirqd/312:11:123
30807993428,4cyclictest41-21ksoftirqd/311:09:193
30807993428,4cyclictest41-21ksoftirqd/310:01:503
30807993428,4cyclictest41-21ksoftirqd/307:50:133
30807993428,4cyclictest41-21ksoftirqd/307:50:133
30807993428,4cyclictest41-21ksoftirqd/307:20:043
30807993428,3cyclictest41-21ksoftirqd/307:45:123
30806993429,3cyclictest33-21ksoftirqd/208:46:302
30806993429,3cyclictest33-21ksoftirqd/208:10:222
30806993428,4cyclictest33-21ksoftirqd/211:37:132
30806993428,4cyclictest33-21ksoftirqd/210:36:002
30806993428,4cyclictest33-21ksoftirqd/210:26:082
30806993428,4cyclictest33-21ksoftirqd/208:02:192
30806993428,4cyclictest33-21ksoftirqd/207:26:572
30806993428,4cyclictest33-21ksoftirqd/207:22:522
30806993427,5cyclictest33-21ksoftirqd/207:16:022
30805993428,4cyclictest25-21ksoftirqd/112:27:161
30805993428,4cyclictest25-21ksoftirqd/111:00:141
30805993428,4cyclictest25-21ksoftirqd/110:25:561
30805993428,4cyclictest25-21ksoftirqd/109:25:391
30805993428,4cyclictest25-21ksoftirqd/108:56:581
30805993428,4cyclictest25-21ksoftirqd/108:27:061
3080499348,16cyclictest0-21swapper/012:25:170
3080499348,16cyclictest0-21swapper/010:05:120
138491340,0ptp4l401ktimersoftd/309:55:103
138491340,0ptp4l401ktimersoftd/309:32:593
30807993327,4cyclictest41-21ksoftirqd/311:10:553
30807993327,4cyclictest41-21ksoftirqd/307:12:063
30807993326,5cyclictest41-21ksoftirqd/308:34:173
30806993329,3cyclictest33-21ksoftirqd/207:54:072
30806993329,3cyclictest33-21ksoftirqd/207:54:072
30806993328,3cyclictest33-21ksoftirqd/212:01:152
30806993328,3cyclictest33-21ksoftirqd/212:01:152
30806993328,3cyclictest33-21ksoftirqd/211:04:322
30806993328,3cyclictest33-21ksoftirqd/210:59:222
30806993328,3cyclictest33-21ksoftirqd/209:13:172
30806993328,3cyclictest33-21ksoftirqd/207:33:472
30806993327,4cyclictest33-21ksoftirqd/212:07:512
30806993327,4cyclictest33-21ksoftirqd/208:43:272
3080599334,27cyclictest0-21swapper/110:15:531
30805993328,3cyclictest25-21ksoftirqd/112:31:251
30805993328,3cyclictest25-21ksoftirqd/110:35:121
30805993327,4cyclictest25-21ksoftirqd/111:59:321
30805993327,4cyclictest25-21ksoftirqd/110:34:391
30805993327,4cyclictest25-21ksoftirqd/107:39:521
30805993311,19cyclictest7241-21timerwakeupswit09:35:271
30805993310,20cyclictest8265-21date07:30:001
3080499338,16cyclictest0-21swapper/009:55:150
30804993327,4cyclictest9-21ksoftirqd/011:11:160
30804993327,4cyclictest9-21ksoftirqd/011:05:030
30804993327,4cyclictest9-21ksoftirqd/007:51:540
30804993327,4cyclictest9-21ksoftirqd/007:51:540
138491330,1ptp4l391rcuc/312:09:063
30807993227,3cyclictest41-21ksoftirqd/312:03:013
30807993227,3cyclictest41-21ksoftirqd/312:03:003
30807993227,3cyclictest41-21ksoftirqd/309:27:573
30807993227,3cyclictest41-21ksoftirqd/309:24:213
30807993227,3cyclictest41-21ksoftirqd/308:07:443
30807993226,4cyclictest41-21ksoftirqd/308:20:583
30807993225,4cyclictest41-21ksoftirqd/307:55:143
30806993228,3cyclictest33-21ksoftirqd/207:45:302
30806993227,3cyclictest33-21ksoftirqd/210:10:122
30806993227,3cyclictest33-21ksoftirqd/209:28:302
30806993227,3cyclictest33-21ksoftirqd/209:06:472
30806993227,3cyclictest33-21ksoftirqd/208:57:302
30806993226,4cyclictest33-21ksoftirqd/212:36:302
30806993226,4cyclictest33-21ksoftirqd/212:32:012
30806993226,4cyclictest33-21ksoftirqd/212:12:042
30806993226,4cyclictest33-21ksoftirqd/211:42:512
30806993226,4cyclictest33-21ksoftirqd/210:52:002
30806993226,4cyclictest33-21ksoftirqd/207:39:252
30806993226,4cyclictest33-21ksoftirqd/207:10:362
3080599328,21cyclictest1509-21ls07:15:161
30805993226,4cyclictest25-21ksoftirqd/112:36:141
30805993226,4cyclictest25-21ksoftirqd/111:43:311
30805993226,4cyclictest25-21ksoftirqd/111:25:001
30805993226,4cyclictest25-21ksoftirqd/111:05:441
30805993226,4cyclictest25-21ksoftirqd/109:10:341
30805993226,4cyclictest25-21ksoftirqd/108:19:151
30805993226,4cyclictest25-21ksoftirqd/108:06:551
3080599322,26cyclictest27887-21taskset11:25:041
3080599320,4cyclictest614-21awk07:15:011
30804993227,3cyclictest9-21ksoftirqd/011:44:530
30804993226,4cyclictest9-21ksoftirqd/009:06:040
30804993213,7cyclictest26098-21forks08:05:160
3080799315,23cyclictest29361-21ls12:30:253
30807993126,3cyclictest41-21ksoftirqd/308:47:373
30807993126,3cyclictest41-21ksoftirqd/307:17:163
30807993125,4cyclictest41-21ksoftirqd/311:17:573
30807993125,4cyclictest41-21ksoftirqd/310:17:203
30807993125,4cyclictest41-21ksoftirqd/308:28:163
30807993124,4cyclictest41-21ksoftirqd/311:48:223
30806993127,3cyclictest33-21ksoftirqd/207:45:002
30806993126,3cyclictest33-21ksoftirqd/212:29:502
30806993126,3cyclictest33-21ksoftirqd/212:23:292
30806993126,3cyclictest33-21ksoftirqd/208:36:302
30806993126,3cyclictest33-21ksoftirqd/208:06:362
30806993125,4cyclictest33-21ksoftirqd/211:50:132
30806993125,4cyclictest33-21ksoftirqd/211:08:422
30806993125,4cyclictest33-21ksoftirqd/210:03:352
30806993125,4cyclictest33-21ksoftirqd/209:23:342
3080599312,6cyclictest0-21swapper/111:45:111
30805993126,3cyclictest25-21ksoftirqd/112:10:591
30805993126,3cyclictest25-21ksoftirqd/110:11:191
30805993126,3cyclictest25-21ksoftirqd/108:22:111
30805993125,4cyclictest25-21ksoftirqd/109:45:331
30804993126,3cyclictest9-21ksoftirqd/008:22:500
138491310,9ptp4l401ktimersoftd/310:20:243
30807993025,3cyclictest41-21ksoftirqd/312:35:493
30807993025,3cyclictest41-21ksoftirqd/312:24:403
30807993025,3cyclictest41-21ksoftirqd/310:55:323
30807993025,3cyclictest41-21ksoftirqd/309:02:113
30807993025,3cyclictest41-21ksoftirqd/309:02:103
30807993025,3cyclictest41-21ksoftirqd/308:04:123
30807993024,4cyclictest41-21ksoftirqd/311:50:473
30807993024,4cyclictest41-21ksoftirqd/311:04:423
30806993025,3cyclictest33-21ksoftirqd/209:32:042
30806993024,4cyclictest33-21ksoftirqd/208:52:252
30806993024,4cyclictest33-21ksoftirqd/208:23:462
30806993019,10cyclictest33-21ksoftirqd/208:25:192
3080599309,18cyclictest28324-21expr08:10:131
3080599308,19cyclictest10730-21expr10:50:131
3080599306,5cyclictest1-21systemd08:35:241
3080599306,4cyclictest461-21dbus-daemon09:50:241
30805993025,3cyclictest25-21ksoftirqd/112:10:001
30805993024,4cyclictest25-21ksoftirqd/110:03:581
30805993024,4cyclictest25-21ksoftirqd/108:01:341
3080599301,3cyclictest0-21swapper/109:55:111
30805993011,17cyclictest5982-21df_abs08:30:121
30804993024,4cyclictest9-21ksoftirqd/009:45:310
30804993024,4cyclictest9-21ksoftirqd/008:39:200
30804993017,9cyclictest26657-21/usr/sbin/munin11:20:220
30804993016,10cyclictest3598-21grep09:30:150
138491300,7ptp4l401ktimersoftd/307:27:473
138491300,1ptp4l0-21swapper/308:38:213
30807992925,3cyclictest41-21ksoftirqd/311:33:293
30806992924,3cyclictest33-21ksoftirqd/212:16:582
30806992924,3cyclictest33-21ksoftirqd/211:58:292
30806992924,3cyclictest33-21ksoftirqd/211:30:352
30806992924,3cyclictest33-21ksoftirqd/210:44:132
30806992923,4cyclictest33-21ksoftirqd/210:22:472
3080599297,3cyclictest14344-21mailstats10:55:241
30805992923,4cyclictest25-21ksoftirqd/110:21:431
30805992923,4cyclictest25-21ksoftirqd/108:53:071
30804992924,3cyclictest9-21ksoftirqd/011:55:090
30804992917,8cyclictest32065-21/usr/sbin/munin11:30:260
138491290,0ptp4l401ktimersoftd/311:40:233
138491290,0ptp4l401ktimersoftd/310:39:253
30807992823,3cyclictest41-21ksoftirqd/310:30:213
30806992823,3cyclictest33-21ksoftirqd/210:06:462
30806992823,3cyclictest33-21ksoftirqd/209:55:122
30806992823,3cyclictest33-21ksoftirqd/209:54:502
30806992823,3cyclictest33-21ksoftirqd/209:40:582
3080599288,17cyclictest21960-21phc2sys-jitter09:00:231
3080599288,17cyclictest21960-21phc2sys-jitter09:00:231
30805992823,3cyclictest25-21ksoftirqd/111:37:471
30804992817,8cyclictest374-21/usr/sbin/munin11:35:110
138491280,0ptp4l401ktimersoftd/308:43:243
30806992721,4cyclictest33-21ksoftirqd/210:48:362
3080599272,5cyclictest13190-21apt-get08:45:121
30804992716,8cyclictest24446-21sed11:15:250
30804992716,7cyclictest13047-21ls12:00:130
30804992716,7cyclictest13047-21ls12:00:130
138491270,8ptp4l0-21swapper/307:43:403
30804992615,8cyclictest28185-21expr12:30:120
30807992520,3cyclictest41-21ksoftirqd/309:43:473
30806992520,3cyclictest33-21ksoftirqd/211:20:472
30806992520,3cyclictest33-21ksoftirqd/207:55:292
30806992420,3cyclictest33-21ksoftirqd/208:30:262
30806992015,3cyclictest33-21ksoftirqd/211:17:362
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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