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2026-08-03 - 00:51
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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 rackeslot8.osadl.org (updated Sun Aug 02, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122564724020,2sleep11200831-21kworker/u16:2+xprtiod10:15:011
104718021180,4sleep00-21swapper/008:10:110
967819993027,1cyclictest0-21swapper/312:20:013
967819993027,1cyclictest0-21swapper/308:29:593
967819992925,1cyclictest0-21swapper/308:20:003
967819992825,1cyclictest0-21swapper/311:20:153
9683062270,1sleep30-21swapper/307:10:163
967819992724,1cyclictest0-21swapper/312:25:203
967819992623,1cyclictest0-21swapper/310:25:173
967819992522,1cyclictest0-21swapper/311:15:133
967819992522,1cyclictest0-21swapper/309:30:013
11098902250,1sleep10-21swapper/108:55:231
967819992421,1cyclictest0-21swapper/311:40:303
967819992421,1cyclictest0-21swapper/308:00:293
967819992321,1cyclictest0-21swapper/312:40:003
967819992320,1cyclictest0-21swapper/310:40:323
96781999231,18cyclictest1405951-21turbostat12:10:003
96781999231,16cyclictest1233510-21taskset10:20:003
967819992219,1cyclictest0-21swapper/310:20:173
967819992219,1cyclictest0-21swapper/309:55:183
967819992219,1cyclictest0-21swapper/307:20:183
967819992212,6cyclictest1027708-21turbostat07:55:003
96781999221,15cyclictest1264962-21taskset10:40:003
967819992118,1cyclictest0-21swapper/311:50:013
967819992118,1cyclictest0-21swapper/309:40:203
96781999211,15cyclictest1216993-21taskset10:07:373
13406352210,1sleep30-21swapper/311:25:183
96781999202,14cyclictest1202463-21taskset10:00:113
967819992017,1cyclictest0-21swapper/312:00:193
967819992017,1cyclictest0-21swapper/308:50:373
967819992017,1cyclictest0-21swapper/308:20:213
967819992017,1cyclictest0-21swapper/308:10:013
967819991917,1cyclictest0-21swapper/312:20:203
967819991916,1cyclictest0-21swapper/311:55:183
967819991916,1cyclictest0-21swapper/309:10:193
967819991916,1cyclictest0-21swapper/309:05:193
967819991916,1cyclictest0-21swapper/309:00:283
967819991916,1cyclictest0-21swapper/308:40:003
967819991916,1cyclictest0-21swapper/307:40:153
967819991916,1cyclictest0-21swapper/307:30:173
96781999191,14cyclictest1380243-21taskset11:50:243
96781999191,13cyclictest995735-21taskset07:30:013
967819991816,1cyclictest0-21swapper/311:00:363
967819991816,1cyclictest0-21swapper/311:00:003
967819991815,1cyclictest0-21swapper/309:30:283
967819991815,1cyclictest0-21swapper/309:20:043
967819991815,1cyclictest0-21swapper/307:55:313
96781999181,13cyclictest1444784-21taskset12:34:123
96781999181,13cyclictest1406305-21taskset12:10:133
96781999181,13cyclictest1256892-21taskset10:34:563
96781999181,13cyclictest1185592-21taskset09:47:213
96781999181,13cyclictest1098140-21taskset08:49:063
96781999181,13cyclictest1085581-21taskset08:40:013
96781999181,13cyclictest1008141-21chrt07:36:223
96781999181,12cyclictest1316277-21taskset11:10:203
96781999172,12cyclictest1287372-21taskset10:52:163
967819991714,1cyclictest0-21swapper/310:10:163
96781999171,13cyclictest982410-21taskset07:16:023
96781999171,13cyclictest1357372-21taskset11:35:423
96781999171,13cyclictest1278999-21taskset10:45:413
96781999171,13cyclictest1193007-21taskset09:51:083
96781999171,13cyclictest1163292-21taskset09:35:023
96781999171,13cyclictest1077986-21taskset08:30:233
96781999171,12cyclictest1343634-21chrt11:30:133
96781999171,12cyclictest1135679-21taskset09:15:173
96781999171,12cyclictest1047157-21taskset08:10:103
11555922170,7sleep01155737-21df09:30:140
967819991613,1cyclictest0-21swapper/307:45:213
96781999161,12cyclictest1307191-21taskset11:05:183
96781999161,12cyclictest1107458-21taskset08:55:203
13723922161,5sleep11372432-21ntpq11:45:231
13725542151,11sleep01372638-21/usr/sbin/munin11:45:260
9675302140,2sleep30-21swapper/307:08:413
13987272140,11sleep11398430-21/usr/sbin/munin12:05:161
117256621410,2sleep20-21swapper/209:40:182
12886452130,4sleep01288651-21ssh10:55:100
12637782131,8sleep11263782-21ssh10:37:141
12352402130,9sleep21236203-21cut10:20:202
11330692131,9sleep11134022-21kthreadcore09:15:161
13828212120,4sleep11382825-21ssh11:55:141
12045502120,2sleep01205731-21ssh10:00:220
11177432121,7sleep11117776-21apt-get09:05:141
10860382120,9sleep21086583-21cut08:40:172
10395872121,7sleep01034126-21sendmail-msp08:00:260
10010182121,8sleep21001060-21ntpq07:30:202
14527602110,8sleep11452766-21ssh12:39:391
14066892111,7sleep21406768-21ssh12:10:182
13666952110,8sleep21366697-21ssh11:44:472
12802612110,3sleep11280267-21ssh10:49:131
12800142110,8sleep0222-21plymouthd10:48:370
12256272111,7sleep01225632-21cron10:15:010
12009562110,5sleep2222-21plymouthd09:56:472
11790232111,3sleep01179027-21ssh09:45:060
10922512110,8sleep11092335-21cut08:45:131
10808772115,2sleep20-21swapper/208:35:192
9858132100,7sleep1986091-21kthreadcore07:20:221
9631992101,6sleep0964921-21kthreadcore07:05:210
9615912101,4sleep2961613-21apt-get07:05:152
13435852101,5sleep11343622-21apt-get11:30:111
13274532100,7sleep21327459-21ssh11:19:542
12982302101,6sleep11299518-21kthreadcore11:00:211
12808932100,8sleep21280851-21/usr/sbin/munin10:50:152
12715512101,3sleep0222-21plymouthd10:41:510
12445112104,3sleep11246220-21kthreadcore10:25:191
12097262101,6sleep21209732-21ssh10:04:132
12009302100,3sleep0222-21plymouthd09:56:360
11946632102,4sleep11194700-21apt-get09:55:131
11852192100,3sleep2222-21plymouthd09:46:162
11701842100,7sleep21170190-21ssh09:38:102
10915282100,3sleep11091530-21sshd-auth08:41:361
10792022101,4sleep0222-21plymouthd08:35:140
10723252100,1sleep20-21swapper/208:27:412
10460082101,7sleep21046050-21ntpq08:05:282
10027192105,2sleep11003386-21irqrtprio07:35:171
998811291,5sleep01000651-21cut07:30:190
1437652291,4sleep1222-21plymouthd12:30:141
1437082292,4sleep2222-21plymouthd12:29:302
1435223291,5sleep01435341-21python312:25:270
1414061291,4sleep11414085-21apt-get12:15:131
1310323290,2sleep1222-21plymouthd11:05:461
1274427291,5sleep2222-21plymouthd10:45:172
1271089290,6sleep11271095-21ssh10:40:321
1231174291,5sleep11231224-21ntpq10:15:211
1210287291,4sleep11210322-21apt-get10:05:111
1194300290,2sleep2222-21plymouthd09:54:452
1162085290,3sleep21000-21snmpd09:32:282
1154778291,4sleep0222-21plymouthd09:28:500
1146757290,6sleep01146762-21sh09:23:120
1111476293,4sleep1249-21jbd2/sda2-809:00:161
1104568290,6sleep21104614-21908:55:002
1080146290,6sleep11080626-21kthreadcore08:35:191
1072793291,4sleep11072814-21apt-get08:30:141
1072214290,2sleep1222-21plymouthd08:26:161
1033103291,4sleep11033140-21ntpq07:55:251
1027949291,4sleep21027982-21apt-get07:55:152
1008424290,2sleep2222-21plymouthd07:39:432
989663280,5sleep1989750-21fschecks_time07:25:151
989474281,3sleep2989507-21apt-get07:25:122
973997280,2sleep00-21swapper/007:13:310
964925281,4sleep1966519-21latency07:05:221
1444891281,4sleep21444897-21ssh12:34:322
1429247280,2sleep21429253-21ssh12:24:332
1421081280,2sleep2222-21plymouthd12:18:402
1388856280,5sleep01388862-21ssh11:56:090
1379084281,4sleep01380061-21memory11:50:230
1365548280,1sleep1222-21plymouthd11:41:371
1361675281,4sleep01362964-21kthreadcore11:40:200
1358350280,1sleep10-21swapper/111:38:301
1358264280,5sleep00-21swapper/011:38:160
1327505280,6sleep11327536-21latency_hist11:20:001
1312355280,5sleep21312471-21fw_packets11:10:162
1290429280,5sleep11291999-21cut10:55:191
1286513281,4sleep01286735-21ssh10:50:290
1262550281,4sleep21262593-21ntpq10:35:232
1254660280,5sleep21254703-21ntpq10:30:232
1247647281,3sleep2222-21plymouthd10:25:492
1241019281,4sleep11241025-21ssh10:24:041
1232181280,5sleep0222-21plymouthd10:16:280
1225509280,2sleep2222-21plymouthd10:14:432
1215700281,4sleep21215784-21/usr/sbin/munin10:05:252
1212932280,5sleep01214359-21kthreadcore10:05:180
1186807281,5sleep00-21swapper/009:50:030
1170928281,4sleep11170923-21sendmail-msp09:40:011
1169737280,2sleep0222-21plymouthd09:37:000
1153837280,6sleep21153843-21ssh09:26:122
1145854283,3sleep2249-21jbd2/sda2-809:20:372
1141969280,5sleep11143247-21cut09:20:201
1129624280,5sleep11129746-21/usr/sbin/munin09:10:261
1117246280,2sleep2222-21plymouthd09:02:102
1092064281,4sleep21092097-21apt-get08:45:092
1027673281,3sleep1222-21plymouthd07:54:581
1021080280,2sleep1222-21plymouthd07:47:231
1020419281,4sleep21020445-21ntpq07:45:252
995511270,2sleep00-21swapper/007:28:260
984452271,3sleep0985811-21cut07:20:210
983430270,3sleep20-21swapper/207:20:182
1429371270,4sleep10-21swapper/112:24:521
1421944271,3sleep01421612-21sendmail-msp12:20:140
1420671270,1sleep00-21swapper/012:17:290
1411573270,4sleep11411621-21ntpq12:10:251
1398405271,3sleep21398411-21ssh12:05:092
1395953271,3sleep11395991-21ntp_states12:00:271
1395722270,5sleep21390267-21sendmail-msp12:00:232
1382826270,4sleep21382971-21df11:55:152
1374401270,4sleep2222-21plymouthd11:49:292
1309726270,1sleep00-21swapper/011:05:250
1309625270,4sleep2222-21plymouthd11:05:222
1299522271,4sleep21300880-21kthreadcore11:00:222
1269835271,3sleep21264813-21sendmail-msp10:40:212
1249855273,1sleep00-21swapper/010:30:170
1243101270,4sleep01244510-21cat10:25:180
1227588271,3sleep21229068-21kthreadcore10:15:192
1187285270,4sleep11187399-21irqcore09:50:201
1186238271,3sleep11186240-21ssh09:49:081
1178183270,1sleep00-21swapper/009:43:220
1163816271,3sleep10-21swapper/109:35:171
1163028270,4sleep11163052-21munin-run09:35:001
1149149270,4sleep11150530-21grep09:25:181
1139326271,3sleep0222-21plymouthd09:19:320
1134024271,3sleep20-21swapper/209:15:172
1130641270,4sleep21130647-21ssh09:12:082
1124666270,4sleep01125231-21cut09:10:170
1103496270,4sleep01103608-21ntpq08:50:200
1072817271,4sleep21072926-21cpuspeed_turbos08:30:152
1060404270,4sleep11061193-21irqrtprio08:20:201
1054950271,3sleep10-21swapper/108:15:171
1046214271,3sleep10-21swapper/108:05:311
1034366271,3sleep11034388-21apt-get08:00:151
1027434270,4sleep2222-21plymouthd07:52:022
1014741271,3sleep0222-21plymouthd07:43:100
1014695270,4sleep2222-21plymouthd07:42:362
1008727271,3sleep11008509-21sendmail-msp07:40:061
1006024270,4sleep01007320-21/usr/sbin/munin07:35:190
982642260,1sleep00-21swapper/007:18:570
982456260,4sleep2222-21plymouthd07:16:382
976588260,2sleep1222-21plymouthd07:15:131
973795260,3sleep2222-21plymouthd07:10:562
1448503261,2sleep00-21swapper/012:35:180
1446024260,3sleep2222-21plymouthd12:35:152
1413499260,1sleep00-21swapper/012:14:290
1396561260,4sleep01390267-21sendmail-msp12:00:380
1380900263,1sleep1321rcuc/111:50:431
1376376261,2sleep20-21swapper/211:50:202
1358048260,4sleep2222-21plymouthd11:37:382
1349809261,3sleep0222-21plymouthd11:31:300
1344057261,2sleep21344574-21ssh11:30:162
1342518260,2sleep2222-21plymouthd11:27:562
1341032260,3sleep11341068-21ssh11:25:231
1327783261,2sleep21327568-21sendmail-msp11:20:022
1325909260,2sleep1222-21plymouthd11:15:321
1321390261,2sleep0222-21plymouthd11:15:190
1319227260,3sleep1222-21plymouthd11:13:521
1317252261,3sleep01317399-21ntpq11:10:210
1280880261,2sleep10-21swapper/110:50:141
1263372260,3sleep0222-21plymouthd10:36:010
1256489260,3sleep1222-21plymouthd10:33:461
1205831261,3sleep11205587-21kthreadcore10:00:231
1122965260,3sleep01123009-21ntpq09:05:250
1117291260,3sleep0222-21plymouthd09:02:430
1110607260,1sleep20-21swapper/208:55:332
1098473260,1sleep10-21swapper/108:50:101
1097975260,3sleep0222-21plymouthd08:47:010
1076045261,2sleep00-21swapper/008:30:210
1072245260,1sleep00-21swapper/008:26:400
1065835260,1sleep00-21swapper/008:21:230
1059980260,3sleep20-21swapper/208:20:172
1056205261,2sleep20-21swapper/208:15:182
1053071260,2sleep1222-21plymouthd08:12:261
1046697260,1sleep00-21swapper/008:07:310
1039646261,2sleep20-21swapper/208:00:282
1033962260,3sleep0222-21plymouthd07:58:410
1021590260,3sleep0222-21plymouthd07:50:160
1021196260,2sleep00-21swapper/007:48:500
1001776261,2sleep1222-21plymouthd07:31:521
967960250,2sleep10-21swapper/107:10:031
1442930250,2sleep01442967-21ssh12:30:250
1431916250,2sleep10-21swapper/112:25:201
1400610250,2sleep01402028-21ssh12:05:180
1341906250,2sleep0222-21plymouthd11:26:100
1327848251,2sleep01327883-21apt-get11:20:110
1303048250,2sleep0222-21plymouthd11:02:270
1288659251,2sleep20-21swapper/210:55:112
1233780250,2sleep00-21swapper/010:20:100
1123692250,2sleep2222-21plymouthd09:07:552
1109265250,3sleep0222-21plymouthd08:55:230
1085593251,2sleep0872-21in:imuxsock08:40:100
1059462250,2sleep0222-21plymouthd08:17:420
1048797250,2sleep20-21swapper/208:10:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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