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2026-04-04 - 03:37
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

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 376 highest latencies:
System rackbslot6.osadl.org (updated Sat Apr 04, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3039823770,3sleep20-21swapper/220:07:362
459821720,5sleep03185799cyclictest00:33:220
2641621640,3sleep03185799cyclictest01:28:260
1068911080,4ptp4l401ktimersoftd/320:10:203
297212820,1sleep30-21swapper/300:27:223
106891700,1ptp4l401ktimersoftd/323:24:193
106891700,1ptp4l401ktimersoftd/300:29:343
31870996049,5cyclictest33-21ksoftirqd/222:02:302
106891600,1ptp4l401ktimersoftd/300:11:123
109572590,5sleep08972-21cups-browsed01:12:440
31870995631,3cyclictest33-21ksoftirqd/200:52:442
129972560,2sleep20-21swapper/222:32:352
31870995544,5cyclictest33-21ksoftirqd/221:07:312
31870995543,6cyclictest33-21ksoftirqd/221:12:302
314182554,40sleep00-21swapper/020:07:590
31870995443,5cyclictest33-21ksoftirqd/220:37:292
31870995243,4cyclictest33-21ksoftirqd/201:17:362
31870995240,6cyclictest33-21ksoftirqd/223:17:322
31870995042,4cyclictest33-21ksoftirqd/223:52:262
3187099483,3cyclictest121rcu_preempt23:32:422
31870994727,16cyclictest33-21ksoftirqd/223:57:432
3187099452,4cyclictest33-21ksoftirqd/201:37:252
31870994520,4cyclictest33-21ksoftirqd/200:12:422
31870994425,7cyclictest33-21ksoftirqd/223:07:422
31870994418,4cyclictest33-21ksoftirqd/223:37:352
106891440,1ptp4l401ktimersoftd/300:41:073
106891440,1ptp4l401ktimersoftd/300:12:333
106891440,0ptp4l401ktimersoftd/301:11:393
31870994319,4cyclictest33-21ksoftirqd/220:47:392
31870994219,4cyclictest33-21ksoftirqd/201:00:152
3187099421,3cyclictest121rcu_preempt00:47:452
3187099413,3cyclictest121rcu_preempt22:17:242
31870994131,3cyclictest33-21ksoftirqd/201:10:402
31870994128,10cyclictest33-21ksoftirqd/200:17:362
31870994120,7cyclictest33-21ksoftirqd/221:52:482
31870994118,21cyclictest33-21ksoftirqd/223:30:522
31870994116,4cyclictest33-21ksoftirqd/200:32:392
31870994115,5cyclictest33-21ksoftirqd/222:45:252
3187899403,7cyclictest0-21swapper/323:32:333
3187899402,9cyclictest7860-21sh22:27:333
3187099406,8cyclictest33-21ksoftirqd/220:22:312
3187099403,3cyclictest121rcu_preempt00:42:512
3187099403,3cyclictest121rcu_preempt00:42:512
31870994028,9cyclictest33-21ksoftirqd/223:27:212
31870994024,7cyclictest33-21ksoftirqd/200:02:512
31870994022,6cyclictest33-21ksoftirqd/223:47:512
31870994019,7cyclictest33-21ksoftirqd/222:52:202
31870994015,4cyclictest33-21ksoftirqd/220:12:342
31870994014,6cyclictest33-21ksoftirqd/201:05:512
3187099396,7cyclictest33-21ksoftirqd/201:14:582
31870993926,10cyclictest33-21ksoftirqd/223:47:222
31870993914,4cyclictest33-21ksoftirqd/222:41:372
31870993914,4cyclictest33-21ksoftirqd/222:25:182
106891390,1ptp4l401ktimersoftd/322:37:083
106891390,1ptp4l401ktimersoftd/322:17:303
106891390,1ptp4l401ktimersoftd/300:47:583
106891390,1ptp4l401ktimersoftd/300:17:453
106891390,0ptp4l401ktimersoftd/322:42:553
3187099389,4cyclictest33-21ksoftirqd/200:37:372
3187099384,8cyclictest33-21ksoftirqd/221:42:192
3187099383,4cyclictest33-21ksoftirqd/221:22:322
31870993828,3cyclictest33-21ksoftirqd/222:57:212
31870993828,3cyclictest33-21ksoftirqd/220:32:322
31870993827,4cyclictest33-21ksoftirqd/223:12:592
31870993825,4cyclictest33-21ksoftirqd/220:27:342
106891380,1ptp4l401ktimersoftd/323:50:123
106891380,1ptp4l401ktimersoftd/323:18:283
106891380,1ptp4l401ktimersoftd/323:10:153
106891380,1ptp4l401ktimersoftd/322:53:223
106891380,1ptp4l401ktimersoftd/322:52:143
106891380,1ptp4l401ktimersoftd/321:59:373
106891380,1ptp4l401ktimersoftd/301:23:323
106891380,1ptp4l401ktimersoftd/301:14:533
106891380,1ptp4l401ktimersoftd/300:52:553
106891380,1ptp4l401ktimersoftd/300:43:273
106891380,1ptp4l401ktimersoftd/300:43:273
3187099379,6cyclictest33-21ksoftirqd/222:07:472
3187099375,3cyclictest33-21ksoftirqd/200:07:442
31870993731,3cyclictest33-21ksoftirqd/201:37:442
3187099372,3cyclictest121rcu_preempt21:27:472
31870993720,5cyclictest33-21ksoftirqd/201:27:372
31870993718,7cyclictest33-21ksoftirqd/201:25:162
31870993718,11cyclictest33-21ksoftirqd/222:12:362
31870993714,4cyclictest33-21ksoftirqd/200:27:352
106891370,1ptp4l401ktimersoftd/323:58:563
106891370,1ptp4l401ktimersoftd/323:52:313
106891370,1ptp4l401ktimersoftd/322:58:053
106891370,1ptp4l401ktimersoftd/322:16:353
106891370,1ptp4l401ktimersoftd/321:27:333
106891370,1ptp4l401ktimersoftd/320:45:103
106891370,1ptp4l401ktimersoftd/301:42:243
106891370,1ptp4l401ktimersoftd/301:17:313
106891370,1ptp4l401ktimersoftd/300:06:183
106891370,0ptp4l401ktimersoftd/301:34:143
31870993624,9cyclictest33-21ksoftirqd/223:02:412
31870993624,9cyclictest33-21ksoftirqd/223:02:412
31870993622,11cyclictest33-21ksoftirqd/220:22:182
31870993618,6cyclictest33-21ksoftirqd/200:22:332
106891360,1ptp4l401ktimersoftd/323:43:443
106891360,1ptp4l401ktimersoftd/323:38:563
106891360,1ptp4l401ktimersoftd/300:58:273
106891360,0ptp4l401ktimersoftd/323:07:083
106891360,0ptp4l401ktimersoftd/323:07:083
106891360,0ptp4l401ktimersoftd/322:40:003
106891360,0ptp4l401ktimersoftd/322:23:333
3187099358,10cyclictest33-21ksoftirqd/221:17:312
3187099358,10cyclictest33-21ksoftirqd/221:17:312
3187099356,4cyclictest33-21ksoftirqd/220:57:282
3187099355,6cyclictest33-21ksoftirqd/221:06:322
3187099353,7cyclictest33-21ksoftirqd/222:27:412
31870993529,3cyclictest33-21ksoftirqd/222:57:392
31870993526,3cyclictest33-21ksoftirqd/220:57:172
31870993514,7cyclictest33-21ksoftirqd/220:42:382
106891350,1ptp4l401ktimersoftd/323:13:383
106891350,1ptp4l401ktimersoftd/321:52:463
106891350,0ptp4l401ktimersoftd/322:10:373
106891350,0ptp4l401ktimersoftd/321:47:203
106891350,0ptp4l401ktimersoftd/301:03:563
31870993428,3cyclictest33-21ksoftirqd/221:57:362
106891340,1ptp4l401ktimersoftd/300:33:003
31870993327,3cyclictest33-21ksoftirqd/221:47:392
3187099331,3cyclictest121rcu_preempt21:32:462
106891330,11ptp4l401ktimersoftd/321:08:243
106891330,0ptp4l401ktimersoftd/301:29:223
3187099325,3cyclictest121rcu_preempt21:47:192
31861993226,3cyclictest25-21ksoftirqd/123:42:351
106891310,1ptp4l401ktimersoftd/320:15:393
106891310,0ptp4l401ktimersoftd/321:17:493
106891310,0ptp4l401ktimersoftd/321:17:493
86642300,4sleep1241ktimersoftd/100:05:321
31861993022,6cyclictest25-21ksoftirqd/100:17:411
31861993020,7cyclictest25-21ksoftirqd/121:32:181
302902306,11sleep10-21swapper/120:07:361
106891300,0ptp4l401ktimersoftd/320:33:033
122012290,3sleep0111rcuc/021:42:470
71662281,3sleep17184-21munin-run20:27:171
31878992720,4cyclictest41-21ksoftirqd/321:41:053
31878992720,4cyclictest41-21ksoftirqd/321:26:283
31861992718,3cyclictest25-21ksoftirqd/101:27:241
3185799271,3cyclictest0-21swapper/000:48:500
31878992619,4cyclictest41-21ksoftirqd/320:53:043
31861992621,3cyclictest25-21ksoftirqd/123:17:441
31861992619,4cyclictest25-21ksoftirqd/123:24:531
31857992620,3cyclictest9-21ksoftirqd/020:51:000
106891260,1ptp4l401ktimersoftd/321:43:183
106891260,0ptp4l401ktimersoftd/323:32:073
31878992519,3cyclictest41-21ksoftirqd/320:58:143
3186199255,17cyclictest25383-21needreboot01:27:441
31861992519,3cyclictest25-21ksoftirqd/122:12:101
31861992518,4cyclictest25-21ksoftirqd/121:09:441
31861992518,4cyclictest25-21ksoftirqd/101:14:181
31861992513,4cyclictest25-21ksoftirqd/123:58:541
3185799254,18cyclictest32166-21head22:17:490
31857992521,3cyclictest9-21ksoftirqd/023:52:330
31857992520,3cyclictest9-21ksoftirqd/020:17:180
31857992519,3cyclictest9-21ksoftirqd/001:37:280
31857992511,5cyclictest9-21ksoftirqd/022:53:490
270112250,3sleep127021-21rm00:23:001
106891250,1ptp4l401ktimersoftd/321:02:463
106891250,1ptp4l401ktimersoftd/320:31:013
106891250,0ptp4l401ktimersoftd/320:49:453
31861992418,4cyclictest25-21ksoftirqd/122:04:241
31861992418,4cyclictest25-21ksoftirqd/121:01:571
31861992417,4cyclictest26271-21ssh23:50:571
31861992416,4cyclictest241ktimersoftd/101:02:351
31857992418,3cyclictest9-21ksoftirqd/021:10:580
31857992418,3cyclictest9-21ksoftirqd/020:34:580
31857992418,3cyclictest9-21ksoftirqd/000:22:410
315082240,2sleep10-21swapper/122:51:131
170902240,2sleep10-21swapper/123:08:111
134732241,2sleep00-21swapper/023:05:260
134732241,2sleep00-21swapper/023:05:260
106891240,1ptp4l401ktimersoftd/322:02:233
106891240,1ptp4l401ktimersoftd/321:32:383
106891240,1ptp4l401ktimersoftd/320:37:283
106891240,1ptp4l401ktimersoftd/320:17:213
106891240,0ptp4l401ktimersoftd/320:22:303
3186199233,17cyclictest29257-21cpuspeed_turbos01:32:371
3186199232,18cyclictest19179-21grep21:57:461
31861992319,3cyclictest25-21ksoftirqd/122:43:011
31861992318,3cyclictest25-21ksoftirqd/100:34:231
31861992317,4cyclictest25-21ksoftirqd/121:39:391
31861992317,4cyclictest25-21ksoftirqd/120:13:591
31861992316,4cyclictest15028-21grep20:42:331
31857992317,3cyclictest9-21ksoftirqd/020:58:510
31857992317,3cyclictest9-21ksoftirqd/001:26:190
31857992317,3cyclictest6293-21open_inodes22:57:410
31857992316,4cyclictest1379-21sed01:02:520
3185799231,20cyclictest0-21swapper/000:45:400
3185799231,20cyclictest0-21swapper/000:45:400
1355522316,3sleep09-21ksoftirqd/020:37:440
106891230,1ptp4l401ktimersoftd/321:12:283
31861992217,3cyclictest25-21ksoftirqd/123:02:201
31861992217,3cyclictest25-21ksoftirqd/101:07:511
31861992216,4cyclictest25-21ksoftirqd/121:32:281
31861992215,4cyclictest29260-21gltestperf21:12:331
31861992215,4cyclictest25-21ksoftirqd/100:54:101
3186199221,18cyclictest13398-21grep00:42:431
3186199221,18cyclictest13398-21grep00:42:431
3186199220,3cyclictest121rcu_preempt22:53:491
3185799221,7cyclictest1253-21latency_hist01:37:240
31857992217,3cyclictest1029-21snmp_o5powerctl20:12:430
31857992216,3cyclictest9-21ksoftirqd/021:19:260
31857992216,3cyclictest9-21ksoftirqd/021:19:260
3185799221,19cyclictest19579-21ssh22:37:510
31857992211,4cyclictest14979-21acpi23:07:320
3186199218,10cyclictest0-21swapper/101:17:531
31861992116,3cyclictest25-21ksoftirqd/122:22:461
31861992115,3cyclictest19606-21sh00:17:061
31861992114,4cyclictest25-21ksoftirqd/120:50:411
31861992114,4cyclictest24775-21diskmemload00:47:491
31861992114,4cyclictest24775-21diskmemload00:27:341
31861992114,4cyclictest24004-21/usr/sbin/munin21:02:381
31861992114,4cyclictest12972-21sh00:09:291
31861992114,4cyclictest11291-21tail23:02:411
31861992114,4cyclictest11291-21tail23:02:411
31861992113,5cyclictest233-21systemd-journal23:32:211
31861992113,5cyclictest1055-21runrttasks22:20:291
31861992113,4cyclictest812-21sh21:22:181
31861992113,4cyclictest812-21sh21:22:181
3186199211,17cyclictest20662-21snmp_o5powerctl20:52:421
31861992111,3cyclictest47050irq/101-ens3-Tx22:12:591
3186199210,2cyclictest0-21swapper/121:56:121
31857992117,2cyclictest0-21swapper/021:28:390
31857992116,3cyclictest9-21ksoftirqd/021:49:370
31857992116,3cyclictest9-21ksoftirqd/021:13:160
31857992116,3cyclictest9-21ksoftirqd/020:29:510
31857992115,4cyclictest9-21ksoftirqd/020:43:570
31857992115,3cyclictest9-21ksoftirqd/022:08:320
31857992115,3cyclictest9-21ksoftirqd/021:06:090
3185799211,4cyclictest22176-21ssh23:13:250
31857992114,4cyclictest9-21ksoftirqd/022:00:410
31857992114,4cyclictest24388-21sh00:53:200
3185799211,2cyclictest0-21swapper/021:53:360
3185799211,18cyclictest0-21swapper/023:23:100
3185799211,18cyclictest0-21swapper/020:55:460
3185799211,18cyclictest0-21swapper/000:17:270
3185799210,4cyclictest24790-21ssh23:48:260
3185799210,18cyclictest24775-21diskmemload23:33:100
3185799210,18cyclictest24775-21diskmemload22:28:000
31861992015,3cyclictest25-21ksoftirqd/122:38:081
31861992014,4cyclictest7770-21/usr/sbin/munin22:27:491
31861992014,3cyclictest27863-21tr23:52:351
31861992014,3cyclictest25-21ksoftirqd/120:40:411
31861992013,4cyclictest9003-21processes23:32:431
31861992013,4cyclictest7696-21cstates20:27:291
31861992013,4cyclictest25-21ksoftirqd/100:57:561
31861992012,5cyclictest21824-21users23:12:511
31861992012,5cyclictest14370-21timedrift22:32:491
3186199201,16cyclictest1848-21apt-get01:37:371
3186199201,16cyclictest11903-21find21:42:411
3185799208,5cyclictest2222-21needreboot21:22:390
3185799201,4cyclictest6094-21memory20:22:380
31857992014,3cyclictest14094-21processes22:32:430
3185799201,3cyclictest4559-21apt-get01:07:360
31857992013,4cyclictest30674-21interrupts00:27:400
31857992013,4cyclictest24775-21diskmemload00:12:360
31857992012,5cyclictest7584-21expr00:37:350
3185799201,17cyclictest24775-21diskmemload01:18:040
3185799201,17cyclictest12439-21ssh00:08:350
3185799201,17cyclictest0-21swapper/023:45:460
3185799201,17cyclictest0-21swapper/023:38:180
3185799201,17cyclictest0-21swapper/023:21:060
3185799201,17cyclictest0-21swapper/022:13:040
3185799201,17cyclictest0-21swapper/000:00:110
3185799201,16cyclictest8208-21ssh00:04:470
3185799201,16cyclictest4376-21snmp_o5powerctl22:22:460
3185799201,16cyclictest28155-21gltestperf22:47:360
3185799200,18cyclictest0-21swapper/000:58:080
3185799200,17cyclictest2580-21apt-get23:27:330
31861991914,3cyclictest25-21ksoftirqd/100:37:371
31861991914,3cyclictest10973-21phc2sys-jitter20:32:371
31861991911,4cyclictest14179-21swap23:37:501
31861991911,4cyclictest14027-21missed_timers21:47:381
31857991913,3cyclictest9-21ksoftirqd/021:38:410
31857991913,3cyclictest22616-21/usr/sbin/munin22:42:370
3185799191,16cyclictest0-21swapper/021:33:030
3186199181,15cyclictest0-21swapper/120:18:531
31861991811,4cyclictest25-21ksoftirqd/121:22:201
3185799181,14cyclictest20123-21apt-config22:02:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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