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2026-09-14 - 04:05
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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 rackdslot2.osadl.org (updated Mon Sep 14, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139591208174,22phc2sys0-21swapper/319:05:353
99622206172,22sleep10-21swapper/119:06:161
99172204171,22sleep20-21swapper/219:05:402
99562203170,22sleep00-21swapper/019:06:100
2129021590,6sleep31055599cyclictest21:45:203
1392911240,1ptp4l14255-21sed23:45:203
1055499723,22cyclictest30683-21latency_hist21:00:002
1055499721,29cyclictest31239-21fschecks_time21:00:162
1055499710,23cyclictest4071-21cut21:10:172
1055499710,23cyclictest4071-21cut21:10:172
1055499700,29cyclictest1132-21cpuspeed_turbos21:05:132
1055499700,28cyclictest30245-21cpuspeed_turbos00:20:132
1055499700,28cyclictest30245-21cpuspeed_turbos00:20:132
1055499691,22cyclictest25075-21dpkg00:10:002
10554996813,22cyclictest5916-21latency_hist23:30:012
1055499681,23cyclictest15362-21latency_hist21:35:012
1055499680,30cyclictest21110-21/usr/sbin/munin00:00:232
1055499680,28cyclictest30166-21/usr/sbin/munin19:50:172
1055499680,23cyclictest11722-21date20:20:012
1055499680,22cyclictest27541-21/usr/sbin/munin20:50:292
1055499680,22cyclictest14256-21cat23:45:202
1055499680,21cyclictest15688-21/usr/sbin/munin23:50:252
1055499680,21cyclictest10901-21/usr/sbin/munin23:40:242
1055499671,29cyclictest32202-21/usr/sbin/munin19:55:102
1055499670,24cyclictest1253-21date23:20:012
1055499670,22cyclictest15311-21latency_hist19:20:002
1055499670,21cyclictest13429-21cat22:35:282
1055499660,30cyclictest23613-21date20:45:002
1055499650,23cyclictest4992-21df_abs20:05:162
1055499650,22cyclictest29578-21http22:05:002
1055499650,20cyclictest4454-21date20:05:002
1055499640,23cyclictest4696-21wc22:20:012
10553996422,4cyclictest25-21ksoftirqd/100:35:291
1055499620,29cyclictest26518-21date23:05:002
175782610,1sleep00-21swapper/019:24:590
139291610,1ptp4l401ktimersoftd/320:37:213
1055499611,20cyclictest2432-21missed_timers23:20:222
1055499610,22cyclictest19426-21systemctl23:55:212
10553996116,6cyclictest25-21ksoftirqd/122:45:151
1055499600,23cyclictest30415-21sensors23:10:242
1055499590,23cyclictest16896-21mailstats21:35:232
1055499590,23cyclictest15860-21gzip22:40:262
1055499590,23cyclictest15860-21gzip22:40:262
1055499590,21cyclictest8092-21latency_hist21:20:012
139291570,0ptp4l401ktimersoftd/323:18:233
1055499570,22cyclictest8488-21systemctl22:25:252
1055499570,22cyclictest25051-21systemctl20:45:262
1055499560,22cyclictest2058-21taskset00:27:372
10553995513,6cyclictest25-21ksoftirqd/100:15:251
1055499540,24cyclictest6809-21chrt22:24:102
10553995423,8cyclictest25-21ksoftirqd/119:40:001
1055499520,26cyclictest12759-21taskset21:28:532
10553995219,3cyclictest25-21ksoftirqd/121:15:011
10553995219,3cyclictest25-21ksoftirqd/121:15:001
10553995215,7cyclictest25-21ksoftirqd/122:00:211
1055499513,21cyclictest26052-21missed_timers21:55:222
10553995137,3cyclictest25-21ksoftirqd/100:00:191
10553995127,5cyclictest25-21ksoftirqd/123:00:261
10553995114,7cyclictest25-21ksoftirqd/122:05:271
10553995018,7cyclictest25-21ksoftirqd/122:20:241
10553995013,6cyclictest25-21ksoftirqd/123:45:121
10552995024,3cyclictest9-21ksoftirqd/020:25:200
10552995021,3cyclictest9-21ksoftirqd/021:10:190
10552995021,3cyclictest9-21ksoftirqd/021:10:190
1055499490,20cyclictest1312-21snmpd20:27:402
10553994913,7cyclictest25-21ksoftirqd/123:50:251
10553994913,7cyclictest25-21ksoftirqd/123:05:191
10553994913,7cyclictest25-21ksoftirqd/121:55:181
10553994913,7cyclictest25-21ksoftirqd/100:20:171
10553994913,7cyclictest25-21ksoftirqd/100:20:161
10553994912,7cyclictest25-21ksoftirqd/100:30:261
10553994912,6cyclictest25-21ksoftirqd/100:25:251
10553994911,7cyclictest25-21ksoftirqd/121:45:211
139291480,1ptp4l4953-21expr22:20:143
1055499480,23cyclictest323432sleep222:10:102
10553994810,7cyclictest25-21ksoftirqd/123:30:161
1055499470,20cyclictest19066-21runrttasks22:48:002
10553994743,2cyclictest231rcuc/123:10:261
10553994731,5cyclictest25-21ksoftirqd/100:10:001
10553994726,7cyclictest25-21ksoftirqd/121:05:001
1055399472,3cyclictest121rcu_preempt20:50:241
10553994715,7cyclictest25-21ksoftirqd/122:55:251
10553994711,7cyclictest25-21ksoftirqd/121:40:241
10553994711,5cyclictest25-21ksoftirqd/120:20:121
1055499460,23cyclictest9573-21phc2sys-jitter21:20:252
1055399469,7cyclictest25-21ksoftirqd/119:20:121
1055399464,2cyclictest25-21ksoftirqd/119:20:001
1055399464,2cyclictest121rcu_preempt22:40:191
1055399464,2cyclictest121rcu_preempt22:40:191
1055399463,3cyclictest121rcu_preempt20:00:161
1055399463,2cyclictest121rcu_preempt22:35:201
1055399463,2cyclictest121rcu_preempt22:25:241
1055399463,2cyclictest121rcu_preempt20:55:271
1055399463,2cyclictest121rcu_preempt20:35:151
1055399463,2cyclictest121rcu_preempt19:50:291
10553994626,10cyclictest25-21ksoftirqd/120:15:201
10553994619,2cyclictest25-21ksoftirqd/119:30:201
1055399461,7cyclictest25-21ksoftirqd/100:10:021
1055399461,6cyclictest25-21ksoftirqd/122:20:001
10553994610,7cyclictest25-21ksoftirqd/123:55:201
1055299462,2cyclictest121rcu_preempt00:04:590
1055399454,2cyclictest25-21ksoftirqd/122:55:011
1055399453,3cyclictest121rcu_preempt19:45:261
1055399453,2cyclictest121rcu_preempt19:10:171
10553994531,3cyclictest25-21ksoftirqd/120:45:171
10553994530,3cyclictest25-21ksoftirqd/120:30:171
1055399452,4cyclictest25-21ksoftirqd/120:29:591
10553994510,6cyclictest25-21ksoftirqd/123:20:281
1055399450,3cyclictest25-21ksoftirqd/123:40:261
1055299459,9cyclictest9-21ksoftirqd/021:25:160
1055299458,10cyclictest9-21ksoftirqd/022:00:010
10552994531,3cyclictest9-21ksoftirqd/023:40:190
10552994517,3cyclictest9-21ksoftirqd/019:55:010
10552994513,4cyclictest9-21ksoftirqd/022:35:180
1055399442,3cyclictest25-21ksoftirqd/120:10:281
1055399442,3cyclictest25-21ksoftirqd/120:10:281
10553994423,3cyclictest25-21ksoftirqd/120:00:001
10553994410,7cyclictest25-21ksoftirqd/121:30:201
1055399440,2cyclictest25-21ksoftirqd/121:50:311
10552994438,3cyclictest9-21ksoftirqd/000:20:000
1055299441,2cyclictest121rcu_preempt22:05:000
139291430,0ptp4l401ktimersoftd/323:05:273
1055399432,3cyclictest121rcu_preempt23:15:171
1055399432,2cyclictest121rcu_preempt23:35:151
10553994313,7cyclictest25-21ksoftirqd/121:35:251
1055299434,4cyclictest9-21ksoftirqd/020:50:000
1055299433,2cyclictest121rcu_preempt20:00:150
10552994327,4cyclictest9-21ksoftirqd/020:50:240
10552994313,3cyclictest9-21ksoftirqd/020:30:240
10552994312,4cyclictest9-21ksoftirqd/022:30:010
1055299430,3cyclictest217-21systemd-journal00:35:010
139291420,0ptp4l401ktimersoftd/320:43:193
10555994237,3cyclictest337-21dbus-daemon20:02:003
1055499420,26cyclictest217-21systemd-journal19:50:002
10553994236,3cyclictest25-21ksoftirqd/122:30:281
10553994233,3cyclictest25-21ksoftirqd/121:15:241
10553994233,2cyclictest25-21ksoftirqd/121:20:261
1055399422,5cyclictest121rcu_preempt20:05:211
10553994215,7cyclictest25-21ksoftirqd/119:25:131
10553994212,7cyclictest25-21ksoftirqd/123:25:251
10553994211,7cyclictest25-21ksoftirqd/122:10:211
1055399420,2cyclictest25-21ksoftirqd/121:05:171
1055299422,2cyclictest121rcu_preempt19:40:000
1055299421,2cyclictest121rcu_preempt21:00:110
10552994211,9cyclictest9-21ksoftirqd/000:00:000
139291410,1ptp4l401ktimersoftd/300:25:063
139291410,0ptp4l401ktimersoftd/321:24:393
139291410,0ptp4l401ktimersoftd/319:28:573
1055399410,5cyclictest25-21ksoftirqd/119:40:141
1055299419,3cyclictest9-21ksoftirqd/022:10:130
1055299415,3cyclictest9-21ksoftirqd/021:50:170
1055299412,3cyclictest9-21ksoftirqd/020:35:180
1055299412,2cyclictest121rcu_preempt22:40:010
1055299412,2cyclictest121rcu_preempt22:40:000
1055299411,6cyclictest121rcu_preempt19:45:000
10552994112,3cyclictest9-21ksoftirqd/022:15:200
10552994110,4cyclictest9-21ksoftirqd/020:05:260
1055499400,19cyclictest0-21swapper/223:05:272
10553994034,3cyclictest25-21ksoftirqd/120:45:001
1055299400,4cyclictest121rcu_preempt23:05:250
139291390,0ptp4l401ktimersoftd/323:00:143
1055499390,28cyclictest19693-21taskset21:40:532
1055499390,21cyclictest23903-21mailstats19:35:242
10552993935,2cyclictest9-21ksoftirqd/021:40:000
10552993934,3cyclictest9-21ksoftirqd/021:30:230
10552993933,3cyclictest9-21ksoftirqd/023:50:000
10552993933,3cyclictest9-21ksoftirqd/023:20:000
10552993933,3cyclictest9-21ksoftirqd/020:00:000
10552993933,3cyclictest9-21ksoftirqd/000:35:280
10552993926,3cyclictest9-21ksoftirqd/019:20:000
1055299392,2cyclictest121rcu_preempt23:10:130
1055299392,2cyclictest121rcu_preempt21:05:130
1055299391,3cyclictest121rcu_preempt22:22:360
10552993910,3cyclictest9-21ksoftirqd/020:20:170
10555993832,4cyclictest41-21ksoftirqd/323:21:203
10555993832,4cyclictest41-21ksoftirqd/319:54:113
10555993832,4cyclictest41-21ksoftirqd/319:15:243
1055499381,22cyclictest6079-21/usr/sbin/munin00:35:232
10553993832,3cyclictest25-21ksoftirqd/121:30:001
1055299387,4cyclictest9-21ksoftirqd/021:45:140
1055299387,4cyclictest9-21ksoftirqd/019:30:150
10552993833,2cyclictest9-21ksoftirqd/020:55:200
10552993831,3cyclictest9-21ksoftirqd/020:40:250
10552993824,4cyclictest9-21ksoftirqd/000:25:000
10552993824,4cyclictest9-21ksoftirqd/000:25:000
139291370,0ptp4l401ktimersoftd/321:05:013
10555993732,3cyclictest41-21ksoftirqd/300:21:053
10555993732,3cyclictest41-21ksoftirqd/300:21:053
10555993732,3cyclictest15921-21fschecks_count21:35:153
10555993731,4cyclictest41-21ksoftirqd/323:12:173
10555993731,4cyclictest41-21ksoftirqd/322:31:093
10554993731,4cyclictest33-21ksoftirqd/220:32:252
1055499371,18cyclictest0-21swapper/200:05:262
1055499371,17cyclictest1312-21snmpd23:36:422
1055499370,22cyclictest15582-21cpuspeed_turbos19:20:142
1055299378,7cyclictest9-21ksoftirqd/000:05:250
1055299377,9cyclictest9-21ksoftirqd/000:10:010
10552993733,2cyclictest9-21ksoftirqd/022:55:010
10552993732,3cyclictest9-21ksoftirqd/022:30:230
10552993732,3cyclictest9-21ksoftirqd/021:15:280
10552993732,3cyclictest9-21ksoftirqd/020:20:000
10552993732,3cyclictest9-21ksoftirqd/000:25:260
10552993732,2cyclictest9-21ksoftirqd/019:30:010
10552993724,3cyclictest9-21ksoftirqd/023:50:200
10552993721,3cyclictest9-21ksoftirqd/022:10:000
1055299371,5cyclictest0-21swapper/022:45:270
1055299370,2cyclictest121rcu_preempt21:20:290
1055299370,2cyclictest121rcu_preempt19:45:170
10555993632,2cyclictest23959-21cron23:00:003
10555993631,3cyclictest41-21ksoftirqd/322:50:093
10555993631,3cyclictest41-21ksoftirqd/322:40:003
10555993631,3cyclictest41-21ksoftirqd/320:15:133
10555993630,4cyclictest41-21ksoftirqd/319:44:213
10555993630,4cyclictest41-21ksoftirqd/319:13:403
10555993630,4cyclictest41-21ksoftirqd/300:03:163
10555993629,4cyclictest41-21ksoftirqd/323:39:243
1055499360,33cyclictest22262-21latency_hist19:35:012
1055499360,23cyclictest30902-21irqstats22:05:222
1055499360,23cyclictest12576-21sshd19:13:242
1055499360,21cyclictest21240-21cat20:40:002
1055299369,3cyclictest9-21ksoftirqd/023:25:150
10552993633,2cyclictest9-21ksoftirqd/022:55:130
10552993622,4cyclictest9-21ksoftirqd/021:40:150
10552993621,4cyclictest9-21ksoftirqd/023:00:170
1055299361,2cyclictest9-21ksoftirqd/019:10:180
10555993530,3cyclictest41-21ksoftirqd/322:02:303
10555993529,4cyclictest41-21ksoftirqd/323:56:463
10555993529,4cyclictest41-21ksoftirqd/323:50:363
10555993529,4cyclictest41-21ksoftirqd/322:09:313
10555993529,4cyclictest41-21ksoftirqd/320:55:133
10555993529,4cyclictest41-21ksoftirqd/320:51:243
10555993529,4cyclictest41-21ksoftirqd/300:19:403
10555993529,3cyclictest41-21ksoftirqd/322:11:333
10554993530,3cyclictest33-21ksoftirqd/220:20:142
10554993529,4cyclictest33-21ksoftirqd/221:51:082
1055499350,21cyclictest7651-21awk23:30:262
10552993531,2cyclictest9-21ksoftirqd/023:35:190
10552993523,3cyclictest9-21ksoftirqd/023:20:250
10552993521,4cyclictest9-21ksoftirqd/023:33:050
1055299351,2cyclictest121rcu_preempt20:10:130
1055299351,2cyclictest121rcu_preempt20:10:130
1395913428,2phc2sys41-21ksoftirqd/300:10:013
10555993429,3cyclictest41-21ksoftirqd/321:15:123
10555993429,3cyclictest41-21ksoftirqd/320:49:503
10555993428,4cyclictest41-21ksoftirqd/322:47:303
10555993428,4cyclictest41-21ksoftirqd/321:29:353
10555993428,4cyclictest41-21ksoftirqd/320:26:173
10555993428,4cyclictest41-21ksoftirqd/320:10:483
10555993428,4cyclictest41-21ksoftirqd/320:10:483
10555993428,4cyclictest41-21ksoftirqd/319:22:423
10555993428,4cyclictest29376-21cron19:50:013
10555993428,3cyclictest41-21ksoftirqd/320:23:533
10554993429,3cyclictest33-21ksoftirqd/200:30:112
1055499341,21cyclictest22492-21latency_hist21:50:002
1055499340,18cyclictest11014-21ssh22:30:302
1055499340,18cyclictest0-21swapper/200:16:112
139291330,0ptp4l401ktimersoftd/322:16:103
10555993329,3cyclictest41-21ksoftirqd/321:42:243
10555993328,3cyclictest41-21ksoftirqd/321:53:263
10555993328,3cyclictest41-21ksoftirqd/319:31:003
10555993328,3cyclictest41-21ksoftirqd/300:09:033
10555993327,4cyclictest41-21ksoftirqd/323:26:533
10555993327,4cyclictest41-21ksoftirqd/322:43:053
10555993327,4cyclictest41-21ksoftirqd/322:43:053
139291320,28ptp4l41-21ksoftirqd/319:55:023
139291320,0ptp4l401ktimersoftd/300:36:003
10555993226,4cyclictest41-21ksoftirqd/321:01:473
10555993226,4cyclictest41-21ksoftirqd/320:06:193
10555993226,4cyclictest41-21ksoftirqd/300:32:413
10555993226,3cyclictest41-21ksoftirqd/321:58:573
10555993226,3cyclictest41-21ksoftirqd/321:30:123
10554993227,3cyclictest33-21ksoftirqd/220:10:132
10554993227,3cyclictest33-21ksoftirqd/220:10:132
10554993227,3cyclictest33-21ksoftirqd/219:41:362
139291310,0ptp4l401ktimersoftd/323:40:183
10554993125,4cyclictest33-21ksoftirqd/222:53:202
10554993125,4cyclictest33-21ksoftirqd/219:27:352
10555993025,3cyclictest41-21ksoftirqd/323:34:323
10555993025,3cyclictest41-21ksoftirqd/319:35:113
10554993025,3cyclictest33-21ksoftirqd/222:59:572
10555992924,3cyclictest41-21ksoftirqd/320:33:193
10555992923,4cyclictest41-21ksoftirqd/321:12:393
10555992923,4cyclictest41-21ksoftirqd/321:12:383
10555992823,3cyclictest41-21ksoftirqd/322:25:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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