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2026-08-20 - 19:47
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackbslot7.osadl.org (updated Thu Aug 20, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2596212411,80sleep22641-21sendmail_mailtr07:05:362
34449912065,42cyclictest22303-21apt-get08:05:090
34449911132,48cyclictest5366-21ssh12:24:010
34449910630,40cyclictest0-21swapper/012:32:430
34449910630,40cyclictest0-21swapper/012:32:430
3295210613,62sleep13318-21apt07:09:551
3461991039,71cyclictest19052-21apt-get07:55:102
3461991039,71cyclictest19052-21apt-get07:55:102
34569910385,12cyclictest619-21wc08:35:281
34449910235,32cyclictest9564-21seq09:56:490
34449910138,22cyclictest14180-21ssh09:14:120
34449910138,22cyclictest14180-21ssh09:14:120
34449910128,25cyclictest351-21runrttasks11:51:180
34449910034,35cyclictest19174-21kworker/u17:2+xprtiod12:18:130
34449910033,26cyclictest30386-21taskset08:27:300
34449910033,26cyclictest30386-21taskset08:27:300
3444999937,28cyclictest19722-21seq11:04:560
3444999934,31cyclictest18339-21ssh09:20:190
3444999837,36cyclictest31963-21ssh11:23:550
3444999837,36cyclictest31963-21ssh11:23:550
3444999835,27cyclictest5547-21ssh11:33:100
3444999833,34cyclictest8495-21ssh12:28:570
3461999768,9cyclictest181rcu_preempt08:10:222
3461999768,9cyclictest181rcu_preempt08:10:222
3456999752,37cyclictest0-21swapper/112:19:561
3444999738,21cyclictest9719-21unin-run09:04:550
3444999737,34cyclictest21871-21ssh10:15:410
3444999737,29cyclictest13099-21ssh11:45:000
3444999735,27cyclictest25279-21ssh12:04:210
3444999735,22cyclictest13655-21ssh10:55:070
3444999734,26cyclictest31732-21sh12:14:420
3444999733,25cyclictest7091-21taskset09:53:360
3444999731,28cyclictest25592-21ssh09:31:020
3444999726,22cyclictest0-21swapper/010:00:180
285442970,7sleep30-21swapper/309:35:333
3461999665,17cyclictest23532-21kworker/u18:2+events_unbound09:19:562
3444999648,39cyclictest0-21swapper/011:10:070
3444999635,26cyclictest11757-21ssh11:42:470
3444999635,19cyclictest19056-21taskset07:55:070
3444999635,19cyclictest19056-21taskset07:55:070
3444999634,28cyclictest5413-21ssh10:40:550
3444999634,28cyclictest22499-21taskset11:09:040
3444999634,28cyclictest22499-21taskset11:09:040
3444999633,26cyclictest2242-21ssh11:27:480
3456999572,16cyclictest4447-21sh11:30:301
3444999567,20cyclictest28854-21apt-key08:24:580
3444999537,48cyclictest17500-21/usr/sbin/munin10:10:150
3444999537,48cyclictest17500-21/usr/sbin/munin10:10:150
3444999534,26cyclictest3264-21ssh10:38:360
3444999533,27cyclictest1521-21ssh09:45:000
3444999525,36cyclictest0-21swapper/009:38:000
3461999446,13cyclictest181rcu_preempt09:44:572
3444999472,15cyclictest287-21in:imuxsock07:29:560
3444999438,25cyclictest600-21cron10:34:540
3444999438,25cyclictest600-21cron10:34:540
3444999435,24cyclictest12068-21ssh10:51:440
3444999435,24cyclictest12068-21ssh10:51:440
3444999433,26cyclictest9373-21ssh10:47:570
3444999431,26cyclictest25954-21ssh10:22:560
3444999337,23cyclictest29073-21ssh10:27:490
3444999337,23cyclictest29073-21ssh10:27:490
3444999335,28cyclictest1036-21taskset08:36:040
3444999335,22cyclictest22603-21sh09:26:250
3444999335,22cyclictest22603-21sh09:26:250
3444999334,24cyclictest31298-21memory08:30:220
3444999334,24cyclictest20899-21ssh11:56:180
3444999334,24cyclictest20899-21ssh11:56:180
3444999333,28cyclictest4353-21taskset08:46:590
3444999332,36cyclictest30867-21kworker/u18:1+rpciod10:06:020
3444999332,27cyclictest6565-21ssh11:35:060
3444999332,26cyclictest17408-21sh09:19:230
3461999256,12cyclictest181rcu_preempt12:05:172
3444999271,11cyclictest0-21swapper/009:40:360
3444999230,21cyclictest351-21runrttasks07:30:580
3444999227,23cyclictest0-21swapper/012:05:160
252729211,43sleep00-21swapper/007:05:340
3461999141,9cyclictest181rcu_preempt08:40:522
3444999171,10cyclictest0-21swapper/007:14:580
3444999136,22cyclictest13516-21ssh12:35:370
3444999132,19cyclictest27695-21ssh11:16:110
3444999131,24cyclictest15850-21grep07:45:160
3444999129,20cyclictest0-21swapper/009:06:050
3461999057,8cyclictest181rcu_preempt07:45:262
3461999047,12cyclictest181rcu_preempt08:15:292
3461999041,17cyclictest181rcu_preempt08:35:222
3456999071,13cyclictest25454-21latency_hist08:14:571
3456999071,13cyclictest25454-21latency_hist08:14:571
3444999062,20cyclictest7307-21apt-get07:20:090
3444999035,19cyclictest13637-21taskset07:39:140
3461998965,15cyclictest17617-21cpuspeed10:10:112
3461998965,15cyclictest17617-21cpuspeed10:10:112
3461998964,11cyclictest181rcu_preempt09:20:172
3461998962,8cyclictest181rcu_preempt09:10:302
3461998962,8cyclictest181rcu_preempt09:10:302
3461998942,15cyclictest181rcu_preempt07:30:542
3444998936,23cyclictest7844-21seq08:57:290
3444998936,23cyclictest7844-21seq08:57:290
3444998935,22cyclictest26243-21netstat08:15:340
3444998934,23cyclictest15028-21seq07:41:030
3461998849,9cyclictest181rcu_preempt07:25:122
3461998847,13cyclictest181rcu_preempt10:22:512
3444998868,10cyclictest20689-21apt-get08:00:110
3444998833,23cyclictest5169-21seq08:50:570
3444998828,33cyclictest0-21swapper/008:12:470
3444998828,33cyclictest0-21swapper/008:12:470
3456998768,10cyclictest0-21swapper/109:19:571
3444998767,10cyclictest1637-21apt-get08:40:110
3461998657,11cyclictest181rcu_preempt11:40:202
3461998650,12cyclictest181rcu_preempt09:48:202
3456998668,12cyclictest0-21swapper/111:15:261
3456998664,8cyclictest0-21swapper/107:19:591
3456998664,8cyclictest0-21swapper/107:19:591
3456998664,16cyclictest4706-21apt-key08:49:581
3444998631,20cyclictest351-21runrttasks07:54:060
3461998543,12cyclictest181rcu_preempt10:15:312
3456998567,12cyclictest28135-21kworker/u17:3-nfsiod11:54:321
3456998565,13cyclictest14694-21latency_hist09:14:591
3456998565,13cyclictest14694-21latency_hist09:14:591
3456998543,30cyclictest23629-21modprobe08:09:541
3461998458,9cyclictest181rcu_preempt08:52:102
3461998455,9cyclictest181rcu_preempt08:45:272
3461998451,14cyclictest20991-21ssh11:56:332
3461998451,14cyclictest20991-21ssh11:56:332
3461998450,14cyclictest181rcu_preempt08:00:322
3461998447,18cyclictest181rcu_preempt09:26:422
3461998447,18cyclictest181rcu_preempt09:26:422
3456998467,9cyclictest0-21swapper/108:54:581
3456998465,10cyclictest0-21swapper/107:45:201
3456998463,11cyclictest0-21swapper/107:24:571
3456998450,23cyclictest9115-21fschecks_count07:25:161
3461998351,13cyclictest181rcu_preempt11:10:162
3461998349,12cyclictest181rcu_preempt10:40:222
3456998362,17cyclictest3436-21cyclictest10:00:201
3456998358,14cyclictest9333-21cstates12:30:111
3456998358,14cyclictest9333-21cstates12:30:111
3461998257,9cyclictest181rcu_preempt12:00:302
3461998248,14cyclictest181rcu_preempt11:35:222
3461998248,12cyclictest181rcu_preempt11:15:172
3461998245,13cyclictest181rcu_preempt07:40:292
3461998240,8cyclictest181rcu_preempt08:05:332
3461998235,11cyclictest181rcu_preempt07:15:012
3461998235,11cyclictest181rcu_preempt07:15:012
3456998265,11cyclictest4957-21cron07:14:551
3456998264,13cyclictest351-21runrttasks08:00:351
3456998225,17cyclictest11302-21diskmemload12:37:331
3444998227,24cyclictest351-21runrttasks07:19:400
3444998227,24cyclictest351-21runrttasks07:19:400
3461998148,10cyclictest181rcu_preempt07:24:222
3461998139,13cyclictest181rcu_preempt10:30:192
3461998139,13cyclictest181rcu_preempt10:30:192
3456998165,9cyclictest0-21swapper/109:54:501
3456998163,8cyclictest0-21swapper/107:34:571
3456998159,13cyclictest0-21swapper/108:30:171
3461998053,13cyclictest0-21swapper/211:20:102
3461998053,13cyclictest0-21swapper/211:20:102
3461998045,14cyclictest181rcu_preempt11:25:252
3461998043,14cyclictest181rcu_preempt10:55:092
3461998028,28cyclictest0-21swapper/211:00:322
3456998065,8cyclictest0-21swapper/107:50:211
3456998061,13cyclictest20817-21latency_hist09:24:591
3456998060,10cyclictest0-21swapper/109:09:581
3456998056,15cyclictest26417-21ntp_kernel_pll_12:05:241
3456998022,24cyclictest27577-21ssh10:25:201
3456998022,24cyclictest27577-21ssh10:25:201
3456998020,24cyclictest17401-21taskset11:00:231
3461997940,13cyclictest181rcu_preempt08:59:582
3461997938,10cyclictest181rcu_preempt09:35:322
3461997937,9cyclictest181rcu_preempt10:50:222
3461997937,9cyclictest181rcu_preempt10:50:222
3461997932,16cyclictest181rcu_preempt11:30:162
3461997932,15cyclictest0-21swapper/209:05:172
3456997964,8cyclictest0-21swapper/110:51:401
3456997964,8cyclictest0-21swapper/110:51:401
3456997962,12cyclictest0-21swapper/111:25:321
3456997961,8cyclictest0-21swapper/108:19:581
3456997959,10cyclictest0-21swapper/111:35:281
3456997957,11cyclictest0-21swapper/107:56:391
3456997957,11cyclictest0-21swapper/107:56:391
3456997956,16cyclictest23437-21fschecks_time11:10:161
3461997852,9cyclictest181rcu_preempt08:55:212
3461997852,9cyclictest181rcu_preempt08:55:212
3461997844,10cyclictest181rcu_preempt12:24:572
3461997843,12cyclictest181rcu_preempt07:35:142
3461997842,11cyclictest181rcu_preempt07:10:132
3461997841,15cyclictest181rcu_preempt10:35:262
3461997826,10cyclictest0-21swapper/207:50:192
3456997862,9cyclictest0-21swapper/110:45:261
3456997862,9cyclictest0-21swapper/109:30:291
3456997860,11cyclictest0-21swapper/109:04:571
3456997859,13cyclictest6881-21switchtime12:25:291
3456997857,12cyclictest0-21swapper/108:24:581
3456997821,27cyclictest23925-21runrttasks10:20:101
3466997745,22cyclictest15467-21chrt09:15:273
3461997749,13cyclictest9345-21ssh09:56:162
3461997747,8cyclictest181rcu_preempt09:51:552
3461997744,13cyclictest181rcu_preempt12:18:012
3461997742,13cyclictest181rcu_preempt12:10:162
3461997741,13cyclictest181rcu_preempt10:04:582
3461997738,8cyclictest181rcu_preempt08:30:292
3461997735,18cyclictest181rcu_preempt12:25:122
3461997735,11cyclictest181rcu_preempt11:47:222
3461997727,9cyclictest181rcu_preempt10:45:182
3461997715,28cyclictest0-21swapper/212:34:572
3461997715,28cyclictest0-21swapper/212:34:572
3456997756,17cyclictest29424-21kworker/u17:1+events_unbound10:39:541
3456997751,17cyclictest13792-21fschecks_count11:46:131
3461997650,15cyclictest0-21swapper/210:05:082
3461997643,8cyclictest181rcu_preempt11:50:272
3461997637,18cyclictest181rcu_preempt12:35:312
3461997632,13cyclictest181rcu_preempt09:30:122
3461997613,28cyclictest0-21swapper/211:06:192
3461997613,28cyclictest0-21swapper/211:06:192
3456997618,28cyclictest24636-21ssh12:02:421
3461997540,11cyclictest181rcu_preempt10:26:382
3461997540,11cyclictest181rcu_preempt10:26:382
3461997531,9cyclictest181rcu_preempt08:20:152
3456997561,10cyclictest3436-21cyclictest11:55:511
3456997561,10cyclictest3436-21cyclictest11:55:511
3456997560,9cyclictest20598-21sh11:05:241
3456997560,9cyclictest20598-21sh11:05:241
3456997554,14cyclictest31067-21sh11:21:371
3456997554,14cyclictest31067-21sh11:21:371
3456997550,17cyclictest4114-21/usr/sbin/munin10:40:261
3456997522,23cyclictest16281-21taskset10:07:411
3456997520,22cyclictest0-21swapper/109:55:511
3456997515,27cyclictest0-21swapper/110:56:321
3456997454,13cyclictest8044-21latency_hist08:59:561
3456997454,13cyclictest8044-21latency_hist08:59:561
3461997335,12cyclictest181rcu_preempt08:26:082
3461997335,12cyclictest181rcu_preempt08:26:082
3456997353,13cyclictest32040-21latency_hist12:14:581
345699734,30cyclictest21884-21rm09:25:291
345699734,30cyclictest21884-21rm09:25:291
3456997326,19cyclictest0-21swapper/107:44:561
3456997322,23cyclictest29398-21ssh09:37:411
3456997254,11cyclictest0-21swapper/110:14:561
3456997254,11cyclictest0-21swapper/110:14:561
3456997250,15cyclictest1-21systemd10:34:561
3456997250,15cyclictest1-21systemd10:34:561
3456997149,16cyclictest31785-21switchtime09:40:431
3456997149,12cyclictest0-21swapper/109:45:321
3456997034,29cyclictest20692-21ssh10:15:051
3456997018,20cyclictest5118-21taskset12:23:231
3466996730,21cyclictest22140-21chrt09:25:323
3466996730,21cyclictest22140-21chrt09:25:323
3456996743,13cyclictest0-21swapper/107:35:181
3456996719,20cyclictest11970-21sh11:43:201
3466996632,22cyclictest18566-21chrt07:54:553
3456996644,15cyclictest0-21swapper/108:26:081
3456996644,15cyclictest0-21swapper/108:26:081
3456996629,29cyclictest0-21swapper/108:40:111
3466996535,19cyclictest10760-21chrt07:30:093
3466996529,24cyclictest29919-21chrt10:29:553
3466996529,24cyclictest29919-21chrt10:29:553
3466996527,25cyclictest17625-21taskset11:00:293
3466996524,27cyclictest8779-21taskset09:00:203
3466996430,21cyclictest24944-21chrt09:30:273
3466996430,21cyclictest21225-21chrt08:00:263
3466996428,23cyclictest4608-21chrt08:49:553
3466996428,21cyclictest6606-21chrt12:25:223
3466996427,25cyclictest29253-21taskset08:25:133
3466996427,25cyclictest29253-21taskset08:25:133
3466996426,25cyclictest6060-21taskset11:34:293
232626415,27sleep30-21swapper/307:05:253
3466996332,21cyclictest12052-21chrt09:10:203
3466996332,21cyclictest12052-21chrt09:10:203
3466996330,21cyclictest17555-21chrt10:10:093
3466996330,21cyclictest17555-21chrt10:10:093
3466996330,20cyclictest23897-21chrt10:20:063
3466996329,22cyclictest5043-21chrt12:23:113
3466996328,22cyclictest14328-21chrt10:05:073
3466996326,25cyclictest11226-21taskset12:32:513
3466996326,25cyclictest11226-21taskset12:32:513
3466996230,19cyclictest31678-21chrt08:30:313
3466996229,21cyclictest27643-21chrt12:07:193
3466996228,23cyclictest30282-21chrt12:11:003
3466996228,22cyclictest21358-21chrt11:06:093
3466996228,22cyclictest21358-21chrt11:06:093
3466996228,22cyclictest19488-21chrt11:55:073
3466996228,22cyclictest19488-21chrt11:55:073
3466996228,21cyclictest24973-21chrt12:03:343
3466996228,19cyclictest5694-21chrt10:41:383
3466996227,24cyclictest32141-21taskset12:15:053
3466996227,23cyclictest8501-21chrt10:45:433
3466996227,23cyclictest4351-21chrt09:49:433
3466996227,23cyclictest19178-21chrt11:54:553
3466996226,24cyclictest26340-21taskset11:15:083
3466996226,23cyclictest3090-21taskset10:38:093
3466996225,24cyclictest21199-21taskset10:15:203
3466996128,25cyclictest0-21swapper/308:15:143
3466996127,22cyclictest19233-21chrt07:56:333
3466996127,22cyclictest19233-21chrt07:56:333
3466996127,21cyclictest11812-21chrt11:42:553
3466996125,24cyclictest9693-21taskset09:57:093
3466996125,24cyclictest8067-21taskset07:20:293
3466996125,24cyclictest7250-21taskset09:54:013
3466996125,24cyclictest2976-21taskset11:29:423
3466996125,24cyclictest13244-21taskset11:45:193
3466996124,25cyclictest32637-21taskset08:35:173
3466996124,25cyclictest13767-21taskset12:36:163
3466996124,24cyclictest20622-21taskset09:24:273
3466996028,21cyclictest4168-21chrt07:10:243
3466996028,21cyclictest25355-21chrt11:13:183
3466996028,20cyclictest29744-21chrt11:20:143
3466996028,20cyclictest29744-21chrt11:20:143
3466996028,20cyclictest1644-21chrt08:40:113
3466996027,21cyclictest7977-21chrt08:59:153
3466996027,21cyclictest7977-21chrt08:59:153
3466996026,22cyclictest24959-21chrt08:11:193
3466996026,22cyclictest24959-21chrt08:11:193
3466996025,21cyclictest11105-21chrt09:07:413
3466995927,21cyclictest11764-21chrt10:00:253
3466995927,20cyclictest15767-21chrt07:45:153
3466995926,22cyclictest23610-21chrt08:09:413
3466995926,20cyclictest30924-21chrt09:40:153
3466995925,23cyclictest9317-21taskset11:39:433
3466995925,22cyclictest8922-21chrt07:25:103
3466995825,20cyclictest5106-21chrt08:50:113
3466995818,27cyclictest6745-21taskset07:16:403
3466995818,27cyclictest6745-21taskset07:16:403
346699573,36cyclictest28073-21taskset08:20:273
3466995626,19cyclictest15579-21chrt10:57:383
3466995625,19cyclictest15186-21chrt07:43:093
3466995623,21cyclictest12342-21chrt07:35:033
3466995525,19cyclictest31511-21chrt10:30:563
3466995525,19cyclictest31511-21chrt10:30:563
3466995524,20cyclictest12640-21chrt10:53:123
3466995524,20cyclictest12640-21chrt10:53:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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