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2026-04-28 - 09:09
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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 rackdslot4.osadl.org (updated Tue Apr 28, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
79462227167,48sleep30-21swapper/319:09:473
76412211167,32sleep20-21swapper/219:05:552
77382205171,23sleep10-21swapper/119:07:111
79382201168,22sleep00-21swapper/019:09:390
209721560,7sleep3825999cyclictest22:10:253
1385918262,11phc2sys0-21swapper/319:10:023
825799650,17cyclictest21674-21chrt23:55:211
316572640,3sleep20-21swapper/219:55:212
8259996315,9cyclictest12841-21sed23:40:013
825699629,11cyclictest5894-21/usr/sbin/munin20:10:150
8256996212,18cyclictest1503-21netstat21:05:220
240832620,2sleep20-21swapper/222:55:212
825699618,18cyclictest5391-21apt22:20:110
8259996012,10cyclictest25468-21sed19:45:003
64572590,2sleep20-21swapper/221:15:202
134991580,6getstats825999cyclictest19:27:423
8258995732,6cyclictest33-21ksoftirqd/222:30:272
135191570,7getstats825999cyclictest20:46:233
825799562,12cyclictest15160-21latency_hist21:35:001
59252550,3sleep30-21swapper/300:30:143
21622540,3sleep125-21ksoftirqd/120:00:271
138491540,1ptp4l391rcuc/322:33:583
825999530,9cyclictest20116-21sh20:40:003
825799533,15cyclictest29554-21awk23:05:281
825699538,9cyclictest0-21swapper/020:38:440
8259995213,16cyclictest0-21swapper/321:30:113
825699528,15cyclictest14964-21taskset22:37:210
825699527,9cyclictest0-21swapper/019:15:260
8259995114,7cyclictest9648-21ls23:30:243
825999510,9cyclictest28758-21cut22:00:193
825999510,10cyclictest17847-21sed20:35:003
50798510,40rtkit-daemon0-21swapper/119:10:021
825999500,9cyclictest27006-21find19:45:243
825999500,11cyclictest31082-21grep22:05:183
825999500,10cyclictest17998-21sed21:40:013
825999490,9cyclictest11209-21cut21:25:173
825999490,10cyclictest27832-21cpuspeed_turbos20:55:133
8258994918,4cyclictest33-21ksoftirqd/220:20:002
825699497,10cyclictest4457-21ptp4l23:20:240
8256994942,4cyclictest17792-21latency_hist21:40:000
134991490,6getstats825999cyclictest20:27:423
825999480,9cyclictest30922-21if_enp4s023:10:173
825999480,16cyclictest18599-21sed19:30:133
8258994814,6cyclictest33-21ksoftirqd/200:39:592
8256994812,17cyclictest22263-21vmstat22:50:290
155602480,2sleep20-21swapper/222:40:132
825999470,9cyclictest1188-21cut00:20:163
825999470,9cyclictest0-21swapper/321:05:163
825999470,10cyclictest18733-21irqrtprio22:45:213
8258994713,4cyclictest33-21ksoftirqd/222:55:002
825999460,9cyclictest12908-21/usr/sbin/munin23:40:273
825999460,10cyclictest6148-21basename23:25:173
8258994614,3cyclictest33-21ksoftirqd/220:05:002
120572460,2sleep10-21swapper/119:15:251
825999450,9cyclictest3190-21wc23:20:133
825999450,9cyclictest0-21swapper/321:45:013
8258994513,6cyclictest33-21ksoftirqd/221:10:002
825999440,9cyclictest0-21swapper/323:15:273
825999440,16cyclictest11930-21mailstats20:20:243
8258994415,3cyclictest33-21ksoftirqd/223:50:162
8258994413,5cyclictest33-21ksoftirqd/222:00:002
8258994412,6cyclictest33-21ksoftirqd/223:15:002
8258994412,6cyclictest33-21ksoftirqd/221:30:012
8258994411,6cyclictest33-21ksoftirqd/219:35:002
8258994411,4cyclictest33-21ksoftirqd/219:50:282
825699448,10cyclictest8141-21expr22:25:120
138491440,0ptp4l401ktimersoftd/300:09:133
825899438,7cyclictest33-21ksoftirqd/200:10:012
8258994317,4cyclictest33-21ksoftirqd/221:45:252
8258994311,6cyclictest33-21ksoftirqd/221:40:002
8258994311,5cyclictest33-21ksoftirqd/219:40:242
8258994310,6cyclictest33-21ksoftirqd/222:05:182
8257994315,5cyclictest25-21ksoftirqd/123:36:501
825899429,6cyclictest33-21ksoftirqd/200:25:192
825899426,9cyclictest33-21ksoftirqd/220:25:182
8258994236,3cyclictest33-21ksoftirqd/200:35:002
8258994210,6cyclictest33-21ksoftirqd/221:10:192
8257994215,5cyclictest25-21ksoftirqd/120:17:491
825699427,10cyclictest0-21swapper/021:51:200
825699425,10cyclictest0-21swapper/019:45:430
825999410,9cyclictest23497-21fschecks_time21:50:163
825999410,7cyclictest9052-21ps00:35:193
825899418,6cyclictest33-21ksoftirqd/223:15:242
825899418,6cyclictest33-21ksoftirqd/219:15:232
825899417,6cyclictest33-21ksoftirqd/222:00:152
825899416,8cyclictest33-21ksoftirqd/200:20:002
825899415,5cyclictest33-21ksoftirqd/219:15:002
8258994135,3cyclictest33-21ksoftirqd/223:25:002
8258994135,3cyclictest33-21ksoftirqd/219:30:012
8258994113,4cyclictest33-21ksoftirqd/222:45:262
8258994111,6cyclictest33-21ksoftirqd/221:00:172
8258994110,6cyclictest33-21ksoftirqd/221:50:132
8257994112,5cyclictest25-21ksoftirqd/122:02:071
825699416,11cyclictest2430-21awk20:00:270
825999400,9cyclictest1319-21snmpd22:36:393
825899409,6cyclictest33-21ksoftirqd/223:00:142
825899409,6cyclictest33-21ksoftirqd/220:40:282
825899408,6cyclictest33-21ksoftirqd/223:30:102
825899408,6cyclictest33-21ksoftirqd/222:20:212
825899408,5cyclictest33-21ksoftirqd/220:35:242
8258994018,3cyclictest33-21ksoftirqd/221:30:132
825699407,11cyclictest0-21swapper/021:15:290
8256994012,13cyclictest24667-21vmstat20:45:280
825999390,9cyclictest0-21swapper/323:55:203
825999390,9cyclictest0-21swapper/320:50:123
825999390,16cyclictest3650-21perl20:05:163
825999390,16cyclictest3650-21perl20:05:163
825999390,10cyclictest31661-21latency00:15:213
825999390,10cyclictest1319-21snmpd22:16:353
825899399,5cyclictest33-21ksoftirqd/223:40:212
825899399,5cyclictest33-21ksoftirqd/220:50:142
825899398,6cyclictest33-21ksoftirqd/200:00:142
825899397,6cyclictest33-21ksoftirqd/222:10:232
825899397,6cyclictest33-21ksoftirqd/220:55:132
825899395,5cyclictest33-21ksoftirqd/223:35:262
825899393,6cyclictest33-21ksoftirqd/200:25:002
825899393,3cyclictest121rcu_preempt20:05:202
825899393,3cyclictest121rcu_preempt20:05:202
8257993914,4cyclictest25-21ksoftirqd/119:36:101
8257993913,4cyclictest25-21ksoftirqd/100:08:171
134991390,2getstats0-21swapper/323:48:333
825999380,9cyclictest28228-21expr19:50:133
825999380,8cyclictest27011-21timerandwakeup23:00:263
825999380,7cyclictest22146-21python19:35:263
825899388,6cyclictest33-21ksoftirqd/222:20:012
825899388,4cyclictest33-21ksoftirqd/223:05:272
825899387,5cyclictest33-21ksoftirqd/220:10:152
825899386,5cyclictest33-21ksoftirqd/222:25:172
8258993833,3cyclictest33-21ksoftirqd/223:29:592
8258993833,3cyclictest33-21ksoftirqd/222:35:012
8258993832,4cyclictest33-21ksoftirqd/219:35:132
8258993832,3cyclictest33-21ksoftirqd/220:30:182
8258993832,3cyclictest33-21ksoftirqd/220:20:122
8258993832,3cyclictest33-21ksoftirqd/219:20:222
8258993810,5cyclictest33-21ksoftirqd/223:55:132
8257993812,6cyclictest25-21ksoftirqd/122:27:221
825999370,9cyclictest1319-21snmpd20:01:093
825999370,7cyclictest14391-21ls19:20:203
825999370,14cyclictest2540-21apt-get21:10:043
825899379,5cyclictest33-21ksoftirqd/220:45:142
825899378,5cyclictest33-21ksoftirqd/200:10:162
825899376,6cyclictest33-21ksoftirqd/223:45:252
825899374,6cyclictest33-21ksoftirqd/221:20:252
8258993732,3cyclictest33-21ksoftirqd/221:40:172
8257993731,4cyclictest25-21ksoftirqd/120:41:051
8257993715,5cyclictest25-21ksoftirqd/120:45:331
8259993630,4cyclictest41-21ksoftirqd/300:28:163
825899366,6cyclictest33-21ksoftirqd/219:45:202
8257993614,5cyclictest25-21ksoftirqd/100:38:521
825699366,19cyclictest0-21swapper/019:20:110
8256993630,4cyclictest9-21ksoftirqd/022:08:580
8256993630,4cyclictest9-21ksoftirqd/020:55:100
8256993630,4cyclictest9-21ksoftirqd/000:32:440
50798360,2rtkit-daemon0-21swapper/321:19:133
8259993530,3cyclictest41-21ksoftirqd/321:48:373
825999350,14cyclictest28598-21df_inode00:10:153
825999350,13cyclictest19820-21sshd23:51:393
8257993529,4cyclictest25-21ksoftirqd/123:13:301
8257993529,4cyclictest25-21ksoftirqd/123:01:141
8257993513,6cyclictest25-21ksoftirqd/122:54:231
8257993513,5cyclictest25-21ksoftirqd/100:29:131
825699357,17cyclictest4192-21irqstats00:25:200
825699357,17cyclictest0-21swapper/023:38:460
8256993529,4cyclictest9-21ksoftirqd/022:02:280
8256993529,4cyclictest9-21ksoftirqd/021:47:360
8256993529,4cyclictest9-21ksoftirqd/021:21:000
8256993529,4cyclictest9-21ksoftirqd/019:12:510
8256993529,4cyclictest9-21ksoftirqd/000:23:290
8256993528,4cyclictest9-21ksoftirqd/023:59:500
8256993528,4cyclictest9-21ksoftirqd/020:24:070
8259993429,3cyclictest41-21ksoftirqd/322:58:593
8259993428,4cyclictest41-21ksoftirqd/322:24:213
8259993428,4cyclictest41-21ksoftirqd/321:02:383
8259993428,4cyclictest41-21ksoftirqd/320:19:173
825999340,6cyclictest11109-21df19:15:163
825999340,13cyclictest30945-21diskstats19:55:153
8257993429,3cyclictest25-21ksoftirqd/120:37:471
8257993429,3cyclictest25-21ksoftirqd/119:43:321
8257993428,4cyclictest25-21ksoftirqd/119:53:121
8257993428,4cyclictest25-21ksoftirqd/100:21:011
8257993427,4cyclictest25-21ksoftirqd/121:55:191
825699347,16cyclictest20631-21/usr/sbin/munin19:35:270
8256993428,4cyclictest9-21ksoftirqd/023:41:530
8256993428,4cyclictest9-21ksoftirqd/023:11:110
8256993428,4cyclictest9-21ksoftirqd/022:47:170
8256993428,4cyclictest9-21ksoftirqd/020:31:300
8256993428,4cyclictest9-21ksoftirqd/020:19:270
8256993428,4cyclictest9-21ksoftirqd/000:14:100
8256993427,4cyclictest9-21ksoftirqd/023:50:100
8256993427,4cyclictest9-21ksoftirqd/021:10:090
8259993328,3cyclictest41-21ksoftirqd/323:10:003
8259993328,3cyclictest41-21ksoftirqd/300:00:123
8257993328,3cyclictest25-21ksoftirqd/123:51:051
8257993327,4cyclictest25-21ksoftirqd/123:46:031
8257993327,4cyclictest25-21ksoftirqd/121:07:451
8257993327,4cyclictest25-21ksoftirqd/119:28:321
8257993327,4cyclictest25-21ksoftirqd/100:14:191
8257993313,5cyclictest25-21ksoftirqd/121:38:521
8257993312,5cyclictest25-21ksoftirqd/122:45:521
825699336,18cyclictest9567-21taskset00:35:220
825699336,15cyclictest15381-21apt-get23:45:140
825699333,9cyclictest0-21swapper/021:25:100
8256993328,3cyclictest9-21ksoftirqd/023:15:110
8256993328,3cyclictest9-21ksoftirqd/022:57:360
8256993328,3cyclictest9-21ksoftirqd/021:55:180
8256993328,3cyclictest15065-21sh21:35:000
8256993327,4cyclictest9-21ksoftirqd/022:15:360
8256993327,4cyclictest9-21ksoftirqd/020:44:250
8256993326,5cyclictest9-21ksoftirqd/023:01:410
138491330,2ptp4l391rcuc/322:44:023
8259993226,4cyclictest41-21ksoftirqd/321:22:313
8257993226,4cyclictest25-21ksoftirqd/122:58:401
8257993226,4cyclictest25-21ksoftirqd/122:41:121
8257993225,5cyclictest25-21ksoftirqd/122:16:491
8257993225,4cyclictest25-21ksoftirqd/121:21:331
825699328,7cyclictest1100-21iostat_ios22:10:170
825699327,13cyclictest18044-21apt-get21:40:130
8256993226,4cyclictest9-21ksoftirqd/023:29:120
8256993226,4cyclictest9-21ksoftirqd/019:32:000
8257993125,4cyclictest25-21ksoftirqd/123:16:141
8257993124,4cyclictest25-21ksoftirqd/122:34:211
825699317,7cyclictest31984-21python19:55:240
825699316,10cyclictest15345-21sed20:30:000
8256993126,3cyclictest9-21ksoftirqd/020:06:440
8256993126,3cyclictest9-21ksoftirqd/020:06:440
8256993125,4cyclictest9-21ksoftirqd/022:30:200
8256993125,4cyclictest9-21ksoftirqd/000:00:460
8256993124,4cyclictest9-21ksoftirqd/023:06:230
8256993124,4cyclictest9-21ksoftirqd/022:41:430
8259993024,4cyclictest41-21ksoftirqd/322:53:503
8257993025,3cyclictest25-21ksoftirqd/121:00:271
8257993024,4cyclictest25-21ksoftirqd/122:11:441
8257993024,4cyclictest25-21ksoftirqd/120:57:461
8257993024,4cyclictest25-21ksoftirqd/100:19:411
8257993013,5cyclictest25-21ksoftirqd/122:36:331
8256993025,3cyclictest9-21ksoftirqd/021:01:570
8256993025,3cyclictest9-21ksoftirqd/000:05:080
8256993024,4cyclictest9-21ksoftirqd/019:28:040
825799296,5cyclictest25-21ksoftirqd/123:31:291
8257992923,4cyclictest25-21ksoftirqd/123:29:221
8257992923,4cyclictest25-21ksoftirqd/123:22:041
8257992923,4cyclictest25-21ksoftirqd/122:08:471
8257992923,4cyclictest25-21ksoftirqd/121:27:351
8257992923,4cyclictest25-21ksoftirqd/120:30:341
8257992923,4cyclictest25-21ksoftirqd/120:12:291
8257992910,5cyclictest25-21ksoftirqd/100:32:181
825699296,7cyclictest28030-21apt-get19:50:130
825699296,7cyclictest24845-21ls19:40:260
264762290,3sleep10-21swapper/120:50:201
8259992821,5cyclictest41-21ksoftirqd/322:29:473
8257992823,3cyclictest25-21ksoftirqd/119:24:031
8257992822,4cyclictest25-21ksoftirqd/121:10:341
8257992822,4cyclictest25-21ksoftirqd/120:05:281
8257992822,4cyclictest25-21ksoftirqd/120:05:271
8257992814,5cyclictest25-21ksoftirqd/100:02:101
8256992815,6cyclictest25278-21apt-get20:50:100
8257992722,3cyclictest25-21ksoftirqd/121:18:431
8257992721,4cyclictest25-21ksoftirqd/120:24:531
8257992720,5cyclictest25-21ksoftirqd/121:43:071
8256992721,4cyclictest9-21ksoftirqd/023:31:490
8256992721,4cyclictest9-21ksoftirqd/000:16:460
8259992621,3cyclictest41-21ksoftirqd/320:14:323
8259992620,4cyclictest41-21ksoftirqd/321:59:503
8259992617,6cyclictest20358-21/usr/sbin/munin20:40:233
8257992621,3cyclictest25-21ksoftirqd/119:55:111
825799261,11cyclictest27435-21chrt19:45:411
8257992519,4cyclictest25-21ksoftirqd/122:23:151
8257992419,3cyclictest25-21ksoftirqd/123:41:501
825799236,5cyclictest25-21ksoftirqd/121:50:221
825799232,6cyclictest25-21ksoftirqd/121:45:051
825799222,5cyclictest25-21ksoftirqd/119:30:251
825799213,7cyclictest25-21ksoftirqd/120:25:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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