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2025-12-21 - 21:05
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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 rackbslot1.osadl.org (updated Sun Dec 21, 2025 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17107352199168,22sleep10-21swapper/107:09:401
17106792197168,18sleep00-21swapper/007:08:580
17107372196160,27sleep30-21swapper/307:09:413
17105782189165,15sleep20-21swapper/207:07:412
17481822930,1sleep30-21swapper/307:41:093
1710957996559,4cyclictest1934628-21chrome10:45:000
1710962996357,4cyclictest1995221-31munin-html11:40:351
1710967996255,5cyclictest1789887-21/usr/share/muni08:25:133
1710967996255,5cyclictest1789887-21/usr/share/muni08:25:133
1710957996256,4cyclictest1920598-21diskstats10:30:150
1710967996149,11cyclictest1679051-21kworker/u8:0+flush-179:008:55:163
1710964995752,4cyclictest1950135-21/usr/share/muni11:00:102
1710964995550,3cyclictest1732760-21munin-update07:30:352
1710964995247,3cyclictest1748834-21chrome07:45:022
1710962995247,4cyclictest247557-21chrome08:45:021
1710962995246,5cyclictest1856945-21kworker/u8:2+flush-179:009:45:141
1710962995246,4cyclictest1898365-21/usr/share/muni10:10:011
1710967995147,3cyclictest1841395-21kworker/u8:4+flush-179:009:15:093
1710967995143,3cyclictest1830883-21kworker/u8:1+flush-179:009:10:163
1710964995132,3cyclictest1902841-21kworker/u8:2+flush-179:011:25:292
1710962995145,4cyclictest3125724-21ThreadPoolForeg07:31:501
1710957995144,5cyclictest1841063-21munin-limits09:10:360
1710967995046,3cyclictest1830883-21kworker/u8:1+flush-179:009:26:313
1710964995046,2cyclictest1995575-21kworker/u8:1+flush-179:011:55:142
171096499500,2cyclictest3125724-21ThreadPoolForeg09:01:252
1710967994946,2cyclictest1969890-21kworker/u8:4+flush-179:012:07:343
1710967994945,3cyclictest2011068-21kworker/u8:0+flush-179:012:20:163
1710967994945,3cyclictest1969890-21kworker/u8:4+events_unbound12:37:133
1710967994945,3cyclictest1969890-21kworker/u8:4+events_unbound12:37:133
1710967994944,3cyclictest1867700-21kworker/u8:1+flush-179:009:40:113
1710962994943,4cyclictest2031060-31munin-html12:15:321
1710967994845,2cyclictest1679051-21kworker/u8:0+flush-179:007:20:113
1710967994844,3cyclictest1969890-21kworker/u8:4+flush-179:011:50:223
1710967994844,3cyclictest1846625-21kworker/u8:0+flush-179:009:55:333
1710964994843,4cyclictest1939670-21latency_hist10:50:012
1710964994843,3cyclictest1796378-21diskstats08:30:162
1710962994841,5cyclictest247560-21ThreadPoolForeg07:47:091
1710957994841,5cyclictest3125725-21ThreadPoolForeg12:00:200
1710967994743,3cyclictest1902841-21kworker/u8:2+flush-179:011:10:213
1710967994743,3cyclictest1679051-21kworker/u8:0+events_unbound08:30:183
1710964994743,3cyclictest2001440-21/usr/share/muni11:50:092
1710964994711,34cyclictest247544-13Chrome_ChildIOT12:05:422
1710957994744,2cyclictest1969890-21kworker/u8:4+flush-179:012:25:130
1710967994643,2cyclictest1846625-21kworker/u8:0+flush-179:009:35:223
1710967994643,2cyclictest1773867-21kworker/u8:2+flush-179:008:19:063
1710967994643,2cyclictest1732455-21kworker/u8:3+flush-179:007:36:283
1710967994642,3cyclictest1928849-21kworker/u8:0+flush-179:011:17:063
1710967994641,4cyclictest1892754-21kworker/u8:4+flush-179:010:10:283
1710964994641,3cyclictest1805192-21/usr/share/muni08:40:152
1710962994642,3cyclictest2011068-21kworker/u8:0+flush-179:012:35:171
1710962994642,3cyclictest2011068-21kworker/u8:0+flush-179:012:35:171
1710962994641,4cyclictest1753468-21kworker/u8:3+flush-179:008:00:281
1710962994640,4cyclictest2005551-21munin-limits11:50:331
1710957994639,5cyclictest1789890-21/usr/share/muni08:25:100
1710957994639,5cyclictest1789890-21/usr/share/muni08:25:100
1710967994542,2cyclictest1969890-21kworker/u8:4+flush-179:011:35:313
1710967994542,2cyclictest1908001-21kworker/u8:3+flush-179:011:45:013
1710967994542,2cyclictest1908001-21kworker/u8:3+flush-179:010:45:063
1710967994541,3cyclictest1969890-21kworker/u8:4+flush-179:011:23:523
1710967994541,3cyclictest1867700-21kworker/u8:1+events_unbound10:05:063
1710967994541,3cyclictest1773867-21kworker/u8:2+flush-179:008:10:303
1710967994531,13cyclictest1867700-21kworker/u8:1+flush-179:010:20:313
1710962994541,3cyclictest247560-21ThreadPoolForeg12:26:441
1710962994540,4cyclictest1780872-21apt-get08:15:141
1710967994440,3cyclictest2011068-21kworker/u8:0+events_unbound12:10:103
1710964994440,3cyclictest1774266-21munin-update08:10:332
1710964994431,12cyclictest1908368-21kworker/2:2+pm10:41:032
1710962994439,4cyclictest1722665-21/usr/share/muni07:20:061
1710957994437,6cyclictest247516-21Chrome_ChildIOT07:24:180
1710957994431,2cyclictest1908001-21kworker/u8:3+flush-179:011:50:060
1710967994341,2cyclictest2011068-21kworker/u8:0+flush-179:012:30:193
1710967994339,3cyclictest1908001-21kworker/u8:3+flush-179:011:45:123
1710967994339,3cyclictest1856945-21kworker/u8:2+flush-179:009:47:403
1710967994339,3cyclictest1753467-21kworker/u8:1+events_unbound07:55:063
1710967994339,3cyclictest1679051-21kworker/u8:0+flush-179:009:06:123
1710964994330,2cyclictest1864293-21kworker/2:0+pm09:41:062
1710964994328,14cyclictest2050341-21kernelversion12:35:202
1710964994328,14cyclictest2050341-21kernelversion12:35:202
1710962994339,3cyclictest1872989-21kworker/u8:3+flush-179:010:00:301
1710962994338,3cyclictest1727897-21/usr/share/muni07:25:021
1710962994337,4cyclictest1809205-21munin-limits08:40:331
1710967994239,2cyclictest1908001-21kworker/u8:3+flush-179:010:30:303
1710967994238,3cyclictest1995575-21kworker/u8:1+flush-179:011:55:143
1710967994238,3cyclictest1902841-21kworker/u8:2+events_unbound10:35:293
1710967994238,3cyclictest1779079-21kworker/u8:3+flush-179:008:48:323
1710967994237,3cyclictest1764309-21/usr/share/muni08:00:143
1710962994238,3cyclictest1928849-21kworker/u8:0+events_unbound10:55:341
1710962994238,3cyclictest1902841-21kworker/u8:2+flush-179:011:15:311
1710962994238,3cyclictest1902841-21kworker/u8:2+flush-179:011:05:161
1710962994237,4cyclictest1997733-21ThreadPoolForeg11:45:141
1710957994237,4cyclictest247561-21ThreadPoolForeg07:56:330
1710957994236,5cyclictest247561-21ThreadPoolForeg07:44:540
1710957994235,5cyclictest3125727-21ThreadPoolForeg08:44:210
171095799421,40cyclictest247563-13Compositor10:35:180
1710967994137,3cyclictest1928849-21kworker/u8:0+events_unbound10:54:593
1710967994137,3cyclictest1872989-21kworker/u8:3+events_unbound09:50:283
1710967994137,3cyclictest1679051-21kworker/u8:0+flush-179:008:05:043
1710967994137,3cyclictest1628858-21kworker/u8:1+flush-179:007:26:093
1710967994136,4cyclictest1784487-21kworker/u8:1+events_unbound08:20:033
1710964994139,1cyclictest1871623-21kworker/2:1+pm10:23:562
1710964994115,25cyclictest247450-13chrome09:46:492
1710962994137,3cyclictest1679051-21kworker/u8:0+flush-179:008:05:161
1710962994136,3cyclictest1846625-21kworker/u8:0+flush-179:009:35:101
1710962994135,5cyclictest1841825-21/usr/share/muni09:15:231
1710962994129,1cyclictest1260-21snmpd07:36:111
1710957994136,4cyclictest1768763-31munin-html08:00:380
1710957994135,5cyclictest3125724-21ThreadPoolForeg11:30:370
1710957994135,4cyclictest1754105-21/usr/share/muni07:50:090
1710957994133,6cyclictest247516-21Chrome_ChildIOT12:30:190
1710967994038,2cyclictest2013600-21kworker/u8:2+flush-179:012:15:073
1710967994038,2cyclictest1902841-21kworker/u8:2+flush-179:010:40:223
1710967994037,2cyclictest1867700-21kworker/u8:1+flush-179:010:00:353
1710967994037,2cyclictest1809666-21kworker/u8:1+flush-179:008:50:213
1710967994037,2cyclictest1799865-21kworker/u8:2+flush-179:009:00:313
1710967994037,2cyclictest1628858-21kworker/u8:1+flush-179:007:30:333
1710967994036,3cyclictest1779079-21kworker/u8:3+flush-179:008:35:273
1710964994038,1cyclictest1933886-21kworker/2:0+pm12:12:202
1710964994038,1cyclictest1705048-21kworker/2:1+pm09:13:442
1710964994038,1cyclictest1705048-21kworker/2:1+pm08:46:062
1710964994037,2cyclictest1933886-21kworker/2:0+pm11:10:282
1710964994037,2cyclictest1846710-21kworker/2:2+pm09:26:012
1710964994037,2cyclictest1705048-21kworker/2:1+pm07:39:262
1710964994036,3cyclictest1679051-21kworker/u8:0+flush-179:008:55:172
1710964994035,4cyclictest1933886-21kworker/2:0+pm10:55:162
1710964994035,4cyclictest1866548-31munin-html09:35:352
171096499401,15cyclictest3125721-21chrome07:41:062
1710962994036,3cyclictest1892753-21kworker/u8:0+flush-179:010:15:181
1710962994034,4cyclictest247560-21ThreadPoolForeg11:57:581
1710962994031,8cyclictest2012971-21apt-get12:00:141
1710957994037,2cyclictest2013600-21kworker/u8:2+flush-179:012:12:310
1710957994035,4cyclictest1867700-21kworker/u8:1+flush-179:009:44:360
1710957994034,5cyclictest1799432-31munin-html08:30:390
1710957994034,4cyclictest1815901-21/usr/share/muni08:50:030
171095799401,38cyclictest247557-21chrome11:05:120
1710967993935,3cyclictest1846625-21kworker/u8:0+flush-179:009:20:163
1710967993933,5cyclictest247515-21ThreadPoolForeg07:45:193
171096499399,28cyclictest3125688-21Chrome_ChildIOT09:54:262
1710964993937,1cyclictest1933886-21kworker/2:0+pm12:22:592
1710964993937,1cyclictest1933886-21kworker/2:0+pm11:23:522
1710964993937,1cyclictest1705048-21kworker/2:1+pm08:08:542
1710964993937,1cyclictest1705048-21kworker/2:1+pm07:55:342
1710964993937,1cyclictest1705048-21kworker/2:1+pm07:14:232
1710964993936,2cyclictest1933886-21kworker/2:0+pm12:25:082
1710964993936,2cyclictest1933886-21kworker/2:0+pm10:52:292
1710964993936,2cyclictest1871623-21kworker/2:1+pm10:14:432
1710964993936,2cyclictest1705048-21kworker/2:1+pm08:53:052
1710964993936,2cyclictest1705048-21kworker/2:1+pm08:36:582
1710964993936,2cyclictest1705048-21kworker/2:1+pm08:01:432
1710964993936,2cyclictest1705048-21kworker/2:1+pm07:52:272
1710964993935,3cyclictest1996981-21apt-get11:45:132
1710964993935,3cyclictest1908001-21kworker/u8:3+flush-179:011:40:152
1710964993935,3cyclictest1892753-21kworker/u8:0+flush-179:010:15:122
1710964993935,3cyclictest1705048-21kworker/2:1+pm07:20:312
1710964993921,16cyclictest3125728-13Compositor10:00:142
1710962993935,3cyclictest1995575-21kworker/u8:1+flush-179:012:05:091
1710962993934,4cyclictest1908001-21kworker/u8:3+flush-179:010:25:361
1710962993934,3cyclictest1867700-21kworker/u8:1+flush-179:010:20:281
1710962993924,14cyclictest1928849-21kworker/u8:0+flush-179:011:01:321
1710957993935,3cyclictest1908001-21kworker/u8:3+flush-179:010:18:400
1710957993935,3cyclictest1830883-21kworker/u8:1+flush-179:009:29:590
1710957993935,3cyclictest1679051-21kworker/u8:0+events_unbound07:30:310
1710957993934,3cyclictest869565-1kworker/0:1H+kblockd09:37:550
171095799391,36cyclictest247560-21ThreadPoolForeg09:30:360
1710967993836,2cyclictest1928849-21kworker/u8:0+flush-179:011:00:073
1710967993836,1cyclictest1743116-21kworker/3:3+pm07:54:443
1710967993835,2cyclictest1902841-21kworker/u8:2+flush-179:010:25:333
1710964993836,1cyclictest1933886-21kworker/2:0+pm12:19:092
1710964993836,1cyclictest1908368-21kworker/2:2+pm10:35:112
1710964993836,1cyclictest1871623-21kworker/2:1+pm09:56:232
1710964993836,1cyclictest1846710-21kworker/2:2+pm09:32:242
1710964993836,1cyclictest1846710-21kworker/2:2+pm09:24:052
1710964993836,1cyclictest1705048-21kworker/2:1+pm09:17:492
1710964993836,1cyclictest1705048-21kworker/2:1+pm07:25:362
1710964993835,2cyclictest1933886-21kworker/2:0+pm11:36:172
1710964993835,2cyclictest1933886-21kworker/2:0+pm11:31:242
1710964993835,2cyclictest1908368-21kworker/2:2+pm10:30:092
1710964993835,2cyclictest1871623-21kworker/2:1+pm10:06:352
1710964993835,2cyclictest1705048-21kworker/2:1+pm09:06:042
1710964993835,2cyclictest1705048-21kworker/2:1+pm08:25:332
1710964993835,2cyclictest1705048-21kworker/2:1+pm08:25:322
1710964993834,3cyclictest1933886-21kworker/2:0+pm11:15:202
1710962993834,3cyclictest1695592-1kworker/1:1H+kblockd10:39:241
1710962993833,4cyclictest1846625-21kworker/u8:0+flush-179:009:40:321
1710962993831,5cyclictest1960318-21/usr/share/muni11:10:021
1710957993836,1cyclictest1799865-21kworker/u8:2+flush-179:008:35:120
1710957993836,1cyclictest1712210-21kworker/0:0+pm08:17:380
1710957993835,2cyclictest3125709-13VizCompositorTh12:24:040
1710957993834,3cyclictest869565-1kworker/0:1H+kblockd08:23:180
1710957993833,3cyclictest869565-1kworker/0:1H+kblockd09:22:350
1710967993734,2cyclictest1902841-21kworker/u8:2+flush-179:011:30:163
1710967993734,2cyclictest1715624-21kworker/u8:2+flush-179:007:15:053
1710967993733,3cyclictest1995575-21kworker/u8:1+flush-179:012:00:393
1710967993732,4cyclictest2011068-21kworker/u8:0+flush-179:012:25:383
1710964993735,1cyclictest1933886-21kworker/2:0+pm12:32:022
1710964993735,1cyclictest1705048-21kworker/2:1+pm08:21:232
1710964993735,1cyclictest1705048-21kworker/2:1+pm08:15:292
1710964993734,2cyclictest1933886-21kworker/2:0+pm11:06:262
1710962993734,2cyclictest1695592-1kworker/1:1H+kblockd12:12:141
1710962993734,2cyclictest1695592-1kworker/1:1H+kblockd11:34:201
1710962993734,2cyclictest1695592-1kworker/1:1H+kblockd08:50:051
1710962993733,2cyclictest1695592-1kworker/1:1H+kblockd07:50:151
1710962993721,4cyclictest3125725-21ThreadPoolForeg07:43:501
1710957993735,1cyclictest1913133-1kworker/0:2H+kblockd10:50:220
1710957993734,2cyclictest869565-1kworker/0:1H+kblockd10:07:570
1710957993734,2cyclictest869565-1kworker/0:1H+kblockd09:17:140
1710957993734,2cyclictest869565-1kworker/0:1H+kblockd07:12:190
1710957993734,2cyclictest1928849-21kworker/u8:0+flush-179:011:26:440
1710957993734,2cyclictest1913133-1kworker/0:2H+kblockd11:05:000
1710957993733,3cyclictest869565-1kworker/0:1H+kblockd08:55:270
1710967993635,1cyclictest1743116-21kworker/3:3+pm11:08:343
1710967993633,2cyclictest1908001-21kworker/u8:3+flush-179:010:18:293
1710967993633,2cyclictest1764465-1kworker/3:1H+kblockd09:32:043
1710964993630,4cyclictest3125725-21ThreadPoolForeg12:03:262
1710962993634,1cyclictest1924152-21kworker/1:2+pm10:49:241
1710962993634,1cyclictest1695592-1kworker/1:1H+kblockd10:51:231
1710962993633,2cyclictest1695592-1kworker/1:1H+kblockd10:41:221
1710962993632,3cyclictest1679051-21kworker/u8:0+flush-179:007:55:441
1710962993631,4cyclictest247557-21chrome12:30:311
1710957993634,1cyclictest869565-1kworker/0:1H+kblockd10:20:080
1710957993634,1cyclictest1913133-1kworker/0:2H+kblockd12:19:420
1710957993633,2cyclictest869565-1kworker/0:1H+kblockd07:47:190
1710957993633,2cyclictest869565-1kworker/0:1H+kblockd07:26:480
1710957993633,2cyclictest3125726-13Chrome_ChildIOT07:37:450
1710957993633,2cyclictest1913133-1kworker/0:2H+kblockd10:29:260
1710957993632,3cyclictest1867700-21kworker/u8:1+flush-179:010:11:540
1710957993630,4cyclictest1835421-31munin-html09:05:350
1710967993532,2cyclictest1923713-1kworker/3:0H+kblockd11:25:163
1710967993532,2cyclictest1902841-21kworker/u8:2+flush-179:010:55:093
1710967993531,3cyclictest1809666-21kworker/u8:1+events_unbound08:43:043
1710964993532,2cyclictest1871623-21kworker/2:1+pm10:25:022
1710962993533,1cyclictest1695592-1kworker/1:1H+kblockd12:20:171
1710962993533,1cyclictest1695592-1kworker/1:1H+kblockd09:06:331
1710962993533,1cyclictest1695592-1kworker/1:1H+kblockd08:56:121
1710962993532,2cyclictest1846625-21kworker/u8:0+events_unbound09:25:251
1710962993532,2cyclictest1695592-1kworker/1:1H+kblockd09:01:051
1710962993531,3cyclictest3125709-13VizCompositorTh09:56:251
1710962993531,3cyclictest1902841-21kworker/u8:2+flush-179:011:25:381
1710962993529,5cyclictest1800076-21/usr/share/muni08:35:051
1710962993529,4cyclictest1970758-21/usr/share/muni11:20:051
1710957993533,1cyclictest869565-1kworker/0:1H+kblockd08:48:040
1710957993533,1cyclictest1913133-1kworker/0:2H+kblockd11:43:140
1710957993533,1cyclictest1913133-1kworker/0:2H+kblockd11:36:090
1710957993533,1cyclictest1913133-1kworker/0:2H+kblockd10:57:400
1710957993532,2cyclictest869565-1kworker/0:1H+kblockd09:55:180
1710957993532,2cyclictest1913133-1kworker/0:2H+kblockd11:18:040
1710957993532,2cyclictest1913133-1kworker/0:2H+kblockd11:11:180
1710957993531,2cyclictest869565-1kworker/0:1H+kblockd09:00:360
1710964993430,2cyclictest1705048-21kworker/2:1+pm07:15:072
1710962993432,1cyclictest1695592-1kworker/1:1H+kblockd08:10:561
1710962993431,2cyclictest1695592-1kworker/1:1H+kblockd08:27:391
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