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2026-07-19 - 08:49
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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 rackdslot3.osadl.org (updated Sun Jul 19, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
243862246201,35sleep20-21swapper/219:08:592
139491205172,22phc2sys0-21swapper/319:09:443
244152203170,22sleep10-21swapper/119:09:221
242322203169,22sleep00-21swapper/019:07:040
2475899741,34cyclictest1795-21df22:50:150
2475899741,21cyclictest25412-21if_err_enp4s019:10:170
139391720,2ptp4l391rcuc/321:10:263
2475899710,29cyclictest27429-21df_abs21:30:150
24761996612,52cyclictest22807-21kworker/3:221:23:133
2475899660,23cyclictest6607-21cat23:00:010
2475899651,30cyclictest25904-21cat23:40:000
2475899631,30cyclictest21519-21sed22:25:010
2476199616,53cyclictest22807-21kworker/3:221:01:133
2475899600,21cyclictest19705-21sed00:30:260
2475899591,20cyclictest19740-21/usr/sbin/munin21:15:210
2475899590,23cyclictest27269-21/usr/sbin/munin23:40:250
2476099584,52cyclictest26981-21kworker/2:120:45:332
2476099583,53cyclictest24656-21kworker/2:222:55:332
2475899540,29cyclictest30739-21grep20:30:120
2475899540,22cyclictest2290-21awk23:55:260
2475899540,17cyclictest5745-21ptp4l21:50:240
24761995113,37cyclictest31848-21kworker/3:219:10:533
2475899510,29cyclictest20546-21/usr/sbin/munin00:35:130
24761994913,34cyclictest31488-21kworker/3:120:07:333
139391490,1ptp4l391rcuc/320:47:203
2476199481,45cyclictest26727-21kworker/3:000:15:243
2476099481,45cyclictest0-21swapper/221:20:232
24760994438,3cyclictest4204-21cron21:50:002
2475999440,43cyclictest0-21swapper/120:45:421
139391440,0ptp4l401ktimersoftd/323:15:283
128302440,2sleep30-21swapper/322:05:183
24760994312,29cyclictest15755-21kworker/2:020:05:332
24759994337,3cyclictest23669-21idleruntime-cro22:29:591
2475899430,18cyclictest0-21swapper/020:10:000
139391430,0ptp4l401ktimersoftd/323:25:153
2476199422,3cyclictest0-21swapper/322:15:233
24760994228,12cyclictest33-21ksoftirqd/220:45:002
2475999420,39cyclictest15341-21cron00:25:011
139391420,0ptp4l401ktimersoftd/322:23:243
2475999411,2cyclictest0-21swapper/119:45:031
2475999410,40cyclictest0-21swapper/120:35:431
2475999410,39cyclictest0-21swapper/120:56:031
24760993911,27cyclictest0-21swapper/220:35:232
24759993934,3cyclictest25-21ksoftirqd/121:19:591
2475999390,37cyclictest0-21swapper/123:10:231
2475999390,37cyclictest0-21swapper/123:10:231
2475999390,37cyclictest0-21swapper/122:50:231
2475999390,37cyclictest0-21swapper/121:00:331
2475899390,28cyclictest19110-21unixbench_singl21:10:280
139391390,0ptp4l401ktimersoftd/322:00:143
24759993731,4cyclictest25-21ksoftirqd/120:40:111
24759993731,4cyclictest25-21ksoftirqd/120:17:571
24759993731,4cyclictest25-21ksoftirqd/119:17:391
24759993731,4cyclictest25-21ksoftirqd/119:17:391
24759993731,4cyclictest25-21ksoftirqd/100:34:221
24759993730,5cyclictest25-21ksoftirqd/122:20:371
24759993730,5cyclictest25-21ksoftirqd/100:08:071
2475899370,23cyclictest8587-21irqrtprio20:50:190
24761993631,3cyclictest41-21ksoftirqd/323:00:013
24760993616,19cyclictest0-21swapper/223:35:242
24759993630,4cyclictest25-21ksoftirqd/123:46:541
24759993630,4cyclictest25-21ksoftirqd/122:10:541
24759993630,4cyclictest25-21ksoftirqd/121:12:251
24759993630,4cyclictest25-21ksoftirqd/120:02:241
2475999361,33cyclictest0-21swapper/123:03:531
24758993630,3cyclictest9-21ksoftirqd/021:25:130
2475899360,22cyclictest30526-21date22:40:250
2475899360,18cyclictest0-21swapper/021:20:250
24761993529,4cyclictest41-21ksoftirqd/323:20:593
24761993529,4cyclictest41-21ksoftirqd/321:51:573
2476199350,4cyclictest0-21swapper/322:35:133
2476099354,29cyclictest0-21swapper/221:00:232
24760993529,4cyclictest33-21ksoftirqd/223:59:262
24760993529,4cyclictest33-21ksoftirqd/222:04:492
24760993529,4cyclictest33-21ksoftirqd/221:52:532
24760993528,5cyclictest33-21ksoftirqd/220:57:292
2476099350,33cyclictest29409-21dpkg21:35:012
24759993529,4cyclictest25-21ksoftirqd/122:39:221
24759993529,4cyclictest25-21ksoftirqd/119:25:541
24759993529,4cyclictest25-21ksoftirqd/100:10:081
2475899351,26cyclictest0-21swapper/000:22:410
2475899351,21cyclictest19568-21latency23:25:200
24761993429,3cyclictest41-21ksoftirqd/322:48:193
24761993428,4cyclictest41-21ksoftirqd/322:14:453
24761993428,4cyclictest41-21ksoftirqd/321:50:003
24761993428,4cyclictest41-21ksoftirqd/321:44:003
24761993428,4cyclictest41-21ksoftirqd/321:29:043
24761993427,5cyclictest41-21ksoftirqd/322:32:583
24761993427,5cyclictest41-21ksoftirqd/322:32:573
24761993415,16cyclictest9685-21munin-node20:30:113
2476199340,20cyclictest26727-21kworker/3:000:05:263
2476099343,29cyclictest31345-21kworker/2:219:40:452
24760993428,4cyclictest33-21ksoftirqd/223:41:522
24760993428,4cyclictest33-21ksoftirqd/220:14:132
24760993428,4cyclictest33-21ksoftirqd/200:37:372
2476099340,33cyclictest24656-21kworker/2:222:42:322
24759993429,3cyclictest25-21ksoftirqd/121:22:201
24759993429,3cyclictest25-21ksoftirqd/120:53:191
24759993428,4cyclictest25-21ksoftirqd/123:36:541
24759993428,4cyclictest25-21ksoftirqd/121:42:541
24759993428,4cyclictest25-21ksoftirqd/120:14:121
24759993428,4cyclictest25-21ksoftirqd/120:09:591
24759993428,4cyclictest25-21ksoftirqd/119:58:271
24759993428,4cyclictest25-21ksoftirqd/119:40:101
24759993428,4cyclictest25-21ksoftirqd/119:34:321
24759993427,5cyclictest25-21ksoftirqd/121:50:561
24758993428,4cyclictest9-21ksoftirqd/022:48:190
24758993428,4cyclictest9-21ksoftirqd/000:12:590
24758993427,4cyclictest9-21ksoftirqd/020:28:230
2476199334,28cyclictest22807-21kworker/3:223:05:333
24761993329,3cyclictest41-21ksoftirqd/322:55:123
24761993328,3cyclictest41-21ksoftirqd/323:40:593
24761993328,3cyclictest41-21ksoftirqd/319:55:113
24761993328,3cyclictest41-21ksoftirqd/319:50:123
24761993328,3cyclictest41-21ksoftirqd/319:45:123
24761993328,3cyclictest41-21ksoftirqd/300:28:443
24761993328,3cyclictest41-21ksoftirqd/300:22:373
24761993327,4cyclictest41-21ksoftirqd/323:58:423
24761993327,4cyclictest41-21ksoftirqd/323:46:483
24761993327,4cyclictest41-21ksoftirqd/323:38:403
24761993327,4cyclictest41-21ksoftirqd/323:34:193
24761993327,4cyclictest41-21ksoftirqd/322:51:563
24761993327,4cyclictest41-21ksoftirqd/322:28:483
24761993327,4cyclictest41-21ksoftirqd/320:13:543
24761993327,4cyclictest41-21ksoftirqd/319:32:183
2476099333,29cyclictest15755-21kworker/2:020:21:522
2476099333,29cyclictest15755-21kworker/2:020:21:522
24760993328,3cyclictest33-21ksoftirqd/219:45:192
24760993328,3cyclictest33-21ksoftirqd/200:23:212
24760993327,4cyclictest33-21ksoftirqd/223:00:532
24760993327,4cyclictest33-21ksoftirqd/220:51:482
24760993327,4cyclictest33-21ksoftirqd/220:01:452
24760993326,5cyclictest33-21ksoftirqd/221:42:132
2476099332,29cyclictest15755-21kworker/2:020:25:052
24760993311,4cyclictest31628-21df_abs22:45:152
24759993328,3cyclictest25-21ksoftirqd/123:33:261
24759993327,4cyclictest25-21ksoftirqd/122:00:551
24759993327,4cyclictest25-21ksoftirqd/121:34:251
24759993327,4cyclictest25-21ksoftirqd/121:28:291
24759993327,4cyclictest25-21ksoftirqd/121:09:561
24759993327,4cyclictest25-21ksoftirqd/120:30:531
24759993327,4cyclictest25-21ksoftirqd/100:04:061
24759993327,3cyclictest25-21ksoftirqd/123:05:361
24759993326,4cyclictest25-21ksoftirqd/122:09:571
24758993327,4cyclictest9-21ksoftirqd/022:32:150
24758993327,4cyclictest9-21ksoftirqd/022:32:150
24758993327,4cyclictest9-21ksoftirqd/021:44:520
24758993327,4cyclictest9-21ksoftirqd/019:48:030
24758993324,6cyclictest9-21ksoftirqd/020:49:590
2476199328,23cyclictest26727-21kworker/3:000:10:463
24761993227,3cyclictest41-21ksoftirqd/319:20:113
24761993226,4cyclictest41-21ksoftirqd/321:19:123
24761993226,4cyclictest41-21ksoftirqd/319:16:453
24761993226,4cyclictest41-21ksoftirqd/319:16:453
2476199320,3cyclictest25955-21apt-get20:20:133
2476199320,3cyclictest25955-21apt-get20:20:133
2476099329,3cyclictest11625-21cut00:15:182
2476099327,4cyclictest14209-21df_abs19:55:142
24760993226,4cyclictest33-21ksoftirqd/223:48:302
24760993226,4cyclictest33-21ksoftirqd/223:09:442
24760993225,5cyclictest33-21ksoftirqd/219:34:092
2476099322,29cyclictest31428-21kworker/2:121:57:492
2476099322,29cyclictest26981-21kworker/2:121:07:492
2476099322,29cyclictest24656-21kworker/2:222:35:442
2476099322,28cyclictest31428-21kworker/2:122:19:442
24759993226,4cyclictest25-21ksoftirqd/123:57:441
24759993226,4cyclictest25-21ksoftirqd/119:50:531
24759993226,4cyclictest25-21ksoftirqd/119:21:241
24759993226,4cyclictest25-21ksoftirqd/100:36:231
24759993225,4cyclictest25-21ksoftirqd/123:15:031
24759993211,20cyclictest0-21swapper/121:55:421
24758993227,3cyclictest9-21ksoftirqd/023:16:480
24758993226,4cyclictest9-21ksoftirqd/023:50:340
24758993226,4cyclictest9-21ksoftirqd/023:50:330
24758993226,4cyclictest9-21ksoftirqd/020:40:420
24758993226,4cyclictest9-21ksoftirqd/019:23:560
2476199317,21cyclictest207-21systemd-journal21:55:593
24761993126,3cyclictest41-21ksoftirqd/320:04:183
24761993125,4cyclictest41-21ksoftirqd/321:07:413
24761993125,4cyclictest41-21ksoftirqd/320:37:203
24761993124,4cyclictest41-21ksoftirqd/300:35:453
2476099313,26cyclictest31428-21kworker/2:122:22:492
2476099313,26cyclictest19236-21kworker/2:221:12:452
24760993126,3cyclictest33-21ksoftirqd/223:12:172
24760993126,3cyclictest33-21ksoftirqd/223:12:172
24760993126,3cyclictest33-21ksoftirqd/219:11:392
24760993126,3cyclictest33-21ksoftirqd/200:12:172
24760993125,4cyclictest33-21ksoftirqd/222:09:062
2476099312,28cyclictest24656-21kworker/2:222:33:092
2476099312,28cyclictest24656-21kworker/2:222:33:092
2476099311,6cyclictest2031-21Xorg22:10:582
2476099311,28cyclictest26981-21kworker/2:120:31:092
2476099311,28cyclictest19236-21kworker/2:221:15:132
24760993112,18cyclictest0-21swapper/219:20:332
24760993110,3cyclictest2310-21cut22:50:202
24759993126,3cyclictest25-21ksoftirqd/121:37:551
24759993125,4cyclictest25-21ksoftirqd/123:40:121
24759993125,4cyclictest25-21ksoftirqd/122:43:351
24759993118,12cyclictest0-21swapper/119:11:231
24758993125,4cyclictest9-21ksoftirqd/023:49:360
24758993125,4cyclictest9-21ksoftirqd/023:21:250
24758993125,4cyclictest9-21ksoftirqd/021:56:530
24758993125,4cyclictest9-21ksoftirqd/020:16:480
24758993125,4cyclictest9-21ksoftirqd/020:12:220
24758993125,4cyclictest9-21ksoftirqd/019:44:300
24758993112,16cyclictest1317-21runrttasks22:17:100
24761993025,3cyclictest41-21ksoftirqd/320:15:473
24761993025,3cyclictest41-21ksoftirqd/300:00:113
24761993024,4cyclictest41-21ksoftirqd/319:26:283
2476099303,26cyclictest31428-21kworker/2:122:29:132
24760993025,3cyclictest33-21ksoftirqd/223:54:012
24760993025,3cyclictest33-21ksoftirqd/223:54:002
24760993025,3cyclictest33-21ksoftirqd/200:30:132
24760993024,3cyclictest33-21ksoftirqd/200:00:272
2476099302,27cyclictest19236-21kworker/2:221:25:412
24760993010,2cyclictest0-21swapper/223:35:012
24759993024,4cyclictest25-21ksoftirqd/119:35:331
24759993024,4cyclictest25-21ksoftirqd/100:17:471
24759993023,4cyclictest25-21ksoftirqd/120:27:291
24758993024,4cyclictest9-21ksoftirqd/022:14:450
24758993024,4cyclictest9-21ksoftirqd/000:02:130
24758993012,15cyclictest8084-21sendmail00:08:280
2475899301,17cyclictest1300-21snmpd20:24:350
2475899301,17cyclictest1300-21snmpd20:24:350
2476199299,18cyclictest19924-21vmstat00:30:273
2476199297,19cyclictest3470-21sed20:40:143
24761992924,3cyclictest41-21ksoftirqd/320:50:313
24761992923,4cyclictest41-21ksoftirqd/319:42:333
24761992913,13cyclictest28310-21/usr/sbin/munin20:25:273
24761992911,16cyclictest30723-21sed21:35:213
24761992911,15cyclictest11589-21gzip20:55:243
24761992910,17cyclictest30840-21sshd22:42:583
2476099299,19cyclictest15755-21kworker/2:020:15:232
2476099296,4cyclictest0-21swapper/221:35:162
24760992924,3cyclictest33-21ksoftirqd/223:28:332
24760992924,3cyclictest33-21ksoftirqd/223:18:582
24760992924,3cyclictest33-21ksoftirqd/219:35:012
24760992923,4cyclictest33-21ksoftirqd/200:09:482
2476099292,26cyclictest17168-21kworker/2:119:19:292
2476099292,26cyclictest17168-21kworker/2:119:19:292
24760992912,3cyclictest1103-21timerwakeupswit19:25:302
24759992924,3cyclictest25-21ksoftirqd/123:53:351
24759992924,3cyclictest25-21ksoftirqd/123:53:341
24759992924,3cyclictest25-21ksoftirqd/122:18:591
24759992923,4cyclictest25-21ksoftirqd/122:30:561
24759992923,4cyclictest25-21ksoftirqd/122:30:551
24759992921,5cyclictest25-21ksoftirqd/121:45:161
24758992923,4cyclictest9-21ksoftirqd/021:47:580
2475899291,25cyclictest27324-21grep19:15:140
2475899291,25cyclictest27324-21grep19:15:140
24758992911,15cyclictest14966-21latency_hist21:05:000
24758992910,16cyclictest16521-21kernelversion00:25:200
2475899290,15cyclictest0-21swapper/019:25:200
24761992823,3cyclictest41-21ksoftirqd/323:12:093
24761992823,3cyclictest41-21ksoftirqd/323:12:093
2476099288,3cyclictest16336-21cut00:25:202
24760992822,4cyclictest33-21ksoftirqd/223:23:042
24760992822,4cyclictest33-21ksoftirqd/219:54:232
2475999285,21cyclictest0-21swapper/122:46:091
24759992823,3cyclictest25-21ksoftirqd/123:29:411
24759992823,3cyclictest25-21ksoftirqd/123:20:541
24759992823,3cyclictest25-21ksoftirqd/122:59:181
2475999280,1cyclictest0-21swapper/100:29:051
2475899286,19cyclictest230202chrt23:34:170
24758992823,3cyclictest9-21ksoftirqd/022:56:300
24758992822,4cyclictest9-21ksoftirqd/022:08:120
2475899281,24cyclictest686-21ls20:35:140
24758992812,14cyclictest1317-21runrttasks19:32:130
24761992722,3cyclictest41-21ksoftirqd/321:33:343
24761992720,5cyclictest41-21ksoftirqd/319:38:563
2475899279,15cyclictest29688-21cpu21:35:120
24758992722,3cyclictest9-21ksoftirqd/021:09:030
24758992713,12cyclictest1308-21sshd00:17:240
2475899271,23cyclictest22795-21wc22:25:230
2475899271,23cyclictest18374-21ls20:05:010
2475899270,24cyclictest28669-21cat22:40:010
2475899270,24cyclictest15156-21ptp4l19:55:240
2475899270,24cyclictest12122-21ps23:10:180
2475899270,24cyclictest12122-21ps23:10:180
2475899270,24cyclictest11835-21df19:50:140
2475899270,24cyclictest11249-21awk23:10:000
2475899270,23cyclictest4515-21wc19:35:120
2475899261,22cyclictest11810-21cron22:05:010
2475899260,23cyclictest10930-21sed20:55:180
139391250,0ptp4l401ktimersoftd/323:50:283
139391250,0ptp4l401ktimersoftd/323:50:283
24759992216,3cyclictest25-21ksoftirqd/120:20:481
24759992216,3cyclictest25-21ksoftirqd/120:20:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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