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2025-12-10 - 20:36
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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 Wed Dec 10, 2025 12:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21182772207184,13sleep10-21swapper/107:09:351
21181982194167,18sleep20-21swapper/207:08:352
21182912186171,7sleep30-21swapper/307:09:453
21181392168141,18sleep00-21swapper/007:07:500
2118680998579,3cyclictest3125721-21chrome11:45:022
2118676997871,5cyclictest2363440-21/usr/share/muni11:05:021
2118676997871,5cyclictest2363440-21/usr/share/muni11:05:021
2118671997222,15cyclictest2280235-21chrome09:45:000
211867199654,60cyclictest2155903-21chrome07:45:010
2118680996358,4cyclictest247561-21ThreadPoolForeg11:25:292
2118671995953,4cyclictest2384081-21/usr/share/muni11:25:160
24221102570,2sleep2247557-21chrome12:00:192
2118680995753,3cyclictest2196740-21latency_hist08:25:002
2118671995749,6cyclictest2186134-21kworker/u8:1+events_unbound09:25:140
2118671995651,4cyclictest2446030-21/usr/share/muni12:25:170
2118683995551,3cyclictest2129329-31munin-html07:15:413
2118680995536,18cyclictest2243559-21kworker/u8:0+flush-179:010:25:002
21812682540,1sleep30-21swapper/308:09:103
211867699541,52cyclictest2300213-31munin-graph10:01:431
2118683995348,4cyclictest247560-21ThreadPoolForeg10:55:243
2118676995349,3cyclictest2102956-21kworker/u8:3+flush-179:007:50:191
2118676995349,3cyclictest2102956-21kworker/u8:3+flush-179:007:50:181
2118671995246,5cyclictest3125725-21ThreadPoolForeg09:05:300
2118671995246,4cyclictest2321732-21/usr/share/muni10:25:100
2118683995146,4cyclictest2150746-21/usr/share/muni07:40:093
2118680995145,5cyclictest3125688-21Chrome_ChildIOT08:05:412
2118680995144,5cyclictest2249058-21/usr/share/muni09:15:112
2118671995147,3cyclictest2140253-21munin-update07:30:330
2118680994933,14cyclictest2393678-31munin-graph11:30:522
2118676994945,3cyclictest2155915-21/usr/share/muni07:45:141
2118683994844,3cyclictest2087165-21kworker/u8:1+events_unbound08:00:003
211868099480,2cyclictest2349769-21ntpq10:50:172
2118676994845,2cyclictest2253738-21kworker/u8:4+flush-179:009:20:141
2118676994844,3cyclictest2374982-21apt-get11:15:121
2118683994743,3cyclictest2186134-21kworker/u8:1+events_unbound09:05:093
2118680994731,4cyclictest2285387-21/usr/share/muni09:50:052
2118671994740,6cyclictest3125688-21Chrome_ChildIOT10:10:010
2118671994733,2cyclictest2043024-1kworker/0:2H+kblockd07:17:390
2118683994643,2cyclictest2388087-21kworker/u8:1+flush-179:012:17:043
2118683994641,4cyclictest2342619-21CacheThread_Blo10:45:013
2118683994632,2cyclictest2170325-1kworker/3:0H+kblockd12:31:233
2118680994643,2cyclictest2253737-21kworker/u8:3+flush-179:009:55:182
2118680994642,3cyclictest2199113-21kworker/u8:6+flush-179:008:50:192
2118680994641,4cyclictest2150309-21kworker/u8:0+flush-179:008:29:592
2118683994542,2cyclictest2253737-21kworker/u8:3+flush-179:009:55:133
2118680994523,13cyclictest247563-13Compositor07:45:002
2118676994540,4cyclictest76405-21systemd-journal12:38:161
2118671994543,1cyclictest2043024-1kworker/0:2H+kblockd12:13:100
2118683994440,3cyclictest2341977-21kworker/u8:3+flush-179:011:52:463
2118683994439,4cyclictest2196371-31munin-graph08:20:493
2118683994430,13cyclictest2170325-1kworker/3:0H+kblockd09:44:393
2118683994430,13cyclictest2170325-1kworker/3:0H+kblockd09:44:393
2118680994440,3cyclictest2243559-21kworker/u8:0+flush-179:009:44:332
2118680994440,3cyclictest2243559-21kworker/u8:0+flush-179:009:44:332
2118680994439,3cyclictest2233758-21/usr/share/muni09:00:042
2118676994441,2cyclictest3125708-13Chrome_ChildIOT10:43:021
2118676994439,4cyclictest2243947-21/usr/share/muni09:10:101
2118676994439,4cyclictest2197268-21/usr/share/muni08:25:041
2118676994439,4cyclictest2123256-31munin-html07:10:361
2118676994431,2cyclictest1068850-1kworker/1:0H+kblockd11:45:251
2118671994439,3cyclictest2362977-21kworker/u8:5+flush-179:011:05:330
2118671994438,5cyclictest3125688-21Chrome_ChildIOT08:40:010
2118683994340,2cyclictest2388087-21kworker/u8:1+flush-179:012:35:283
2118676994341,2cyclictest1068850-1kworker/1:0H+kblockd08:13:401
2118676994334,2cyclictest1068850-1kworker/1:0H+kblockd09:35:291
2118671994338,3cyclictest2326579-21munin-update10:30:050
2118671994336,5cyclictest3125725-21ThreadPoolForeg11:12:450
211867199431,41cyclictest3125629-21e21169fc69a4c6708:40:110
211867199431,41cyclictest3125629-21e21169fc69a4c6708:40:110
2118671994310,31cyclictest3125721-21chrome10:55:310
2118683994239,2cyclictest2368168-21kworker/u8:0+flush-179:011:20:153
2118683994239,2cyclictest2102956-21kworker/u8:3+flush-179:007:45:563
2118683994238,3cyclictest2440679-21munin-update12:20:343
2118680994237,4cyclictest2341977-21kworker/u8:3+flush-179:011:50:312
2118680994237,4cyclictest2326822-21/usr/share/muni10:30:092
2118680994225,2cyclictest2295383-21kworker/u8:1+flush-179:010:55:182
2118676994239,2cyclictest2368168-21kworker/u8:0+flush-179:011:10:321
2118671994238,3cyclictest2299748-21kworker/u8:2+flush-179:010:40:010
2118671994236,4cyclictest2087165-21kworker/u8:1+flush-179:007:36:080
211867199420,41cyclictest247573-21ThreadPoolForeg08:20:100
2118683994137,3cyclictest2295383-21kworker/u8:1+flush-179:010:07:333
2118683994121,18cyclictest2368698-21/usr/share/muni11:10:123
211868099419,32cyclictest1260-21snmpd11:02:062
211868099419,32cyclictest1260-21snmpd11:02:062
2118680994138,2cyclictest99884-21rs:main2
2118680994137,3cyclictest2341977-21kworker/u8:3+flush-179:011:05:342
2118671994137,3cyclictest2435256-21kworker/u8:2+flush-179:012:17:390
2118671994136,4cyclictest2202770-21/usr/share/muni08:30:110
2118671994135,4cyclictest247515-21ThreadPoolForeg12:22:390
2118683994036,3cyclictest2341977-21kworker/u8:3+flush-179:011:55:093
2118683994035,4cyclictest2285259-21latency_hist09:50:013
2118683994034,4cyclictest2424563-21munin-limits12:00:363
2118680994038,1cyclictest2097838-21kworker/2:1+pm07:38:322
2118680994037,2cyclictest2373221-21kworker/2:1+pm11:12:042
2118680994037,2cyclictest2097838-21kworker/2:1+pm09:39:472
2118680994037,2cyclictest2097838-21kworker/2:1+pm09:33:192
2118680994036,3cyclictest2243559-21kworker/u8:0+flush-179:010:01:172
2118680994035,4cyclictest2171401-21/usr/share/muni08:00:062
2118680994035,3cyclictest2087165-21kworker/u8:1+events_unbound07:31:542
2118680994033,5cyclictest2430645-21/usr/share/muni12:10:022
2118676994037,2cyclictest2118378-21kworker/u8:0+events_unbound07:32:341
2118676994037,2cyclictest2087165-21kworker/u8:1+flush-179:007:55:301
2118671994035,4cyclictest2118378-21kworker/u8:0+events_unbound07:15:010
2118671994034,4cyclictest2299748-21kworker/u8:2+flush-179:010:04:120
2118683993934,4cyclictest2358510-21/usr/share/muni11:00:163
2118683993934,4cyclictest2358510-21/usr/share/muni11:00:163
2118680993937,1cyclictest2409941-21kworker/2:2+pm12:16:012
2118680993937,1cyclictest2373221-21kworker/2:1+pm11:40:592
2118680993937,1cyclictest2097838-21kworker/2:1+pm10:16:012
2118680993937,1cyclictest2097838-21kworker/2:1+pm10:07:182
2118680993937,1cyclictest2097838-21kworker/2:1+pm08:49:592
2118680993937,1cyclictest2097838-21kworker/2:1+pm08:49:582
2118680993937,1cyclictest2097838-21kworker/2:1+pm07:54:392
2118680993937,1cyclictest2097838-21kworker/2:1+pm07:54:382
2118680993937,1cyclictest2097838-21kworker/2:1+pm07:25:162
2118680993937,1cyclictest2097838-21kworker/2:1+pm07:20:592
2118680993936,2cyclictest2435256-21kworker/u8:2+flush-179:012:40:002
2118680993936,2cyclictest2336923-21kworker/2:2+pm10:40:362
2118680993936,2cyclictest2097838-21kworker/2:1+pm10:10:052
2118680993936,2cyclictest2097838-21kworker/2:1+pm09:47:392
2118680993936,2cyclictest2097838-21kworker/2:1+pm09:20:012
2118680993936,2cyclictest2097838-21kworker/2:1+pm08:43:522
2118680993936,2cyclictest2097838-21kworker/2:1+pm08:43:522
2118680993936,2cyclictest2097838-21kworker/2:1+pm07:58:362
2118680993916,22cyclictest2208144-21snmp_wanswitch.08:35:052
2118676993936,2cyclictest2417103-21kworker/u8:0+flush-179:012:20:111
2118676993933,4cyclictest2316625-21/usr/share/muni10:20:021
2118671993935,3cyclictest2043024-1kworker/0:2H+kblockd09:58:400
2118671993934,4cyclictest2388087-21kworker/u8:1+flush-179:012:35:000
2118671993934,4cyclictest2253737-21kworker/u8:3+flush-179:009:50:120
2118671993932,5cyclictest3125725-21ThreadPoolForeg09:21:480
2118671993925,2cyclictest2043024-1kworker/0:2H+kblockd07:20:310
2118683993835,3cyclictest2295383-21kworker/u8:1+events_unbound10:38:213
2118683993835,2cyclictest3125724-21ThreadPoolForeg10:40:353
2118683993835,2cyclictest2243559-21kworker/u8:0+flush-179:010:31:303
2118683993834,3cyclictest2150309-21kworker/u8:0+flush-179:008:29:263
2118680993836,1cyclictest2097838-21kworker/2:1+pm10:35:272
2118680993836,1cyclictest2097838-21kworker/2:1+pm09:11:022
2118680993836,1cyclictest2097838-21kworker/2:1+pm08:58:442
2118680993836,1cyclictest2097838-21kworker/2:1+pm08:11:012
2118680993836,1cyclictest2097838-21kworker/2:1+pm07:19:302
2118680993836,1cyclictest2097838-21kworker/2:1+pm07:14:232
2118680993835,2cyclictest2373221-21kworker/2:1+pm11:36:052
2118680993835,2cyclictest2373221-21kworker/2:1+pm11:20:332
2118680993835,2cyclictest2097838-21kworker/2:1+pm10:25:052
2118680993835,2cyclictest2097838-21kworker/2:1+pm09:26:362
2118680993835,2cyclictest2097838-21kworker/2:1+pm08:30:352
2118680993835,2cyclictest2097838-21kworker/2:1+pm08:18:412
2118680993835,2cyclictest2097838-21kworker/2:1+pm07:41:592
211868099381,35cyclictest3125721-21chrome12:30:502
2118676993836,1cyclictest1068850-1kworker/1:0H+kblockd08:52:241
2118676993835,2cyclictest247562-13Chrome_ChildIOT08:45:361
2118676993835,2cyclictest247562-13Chrome_ChildIOT08:45:361
2118676993834,3cyclictest2186134-21kworker/u8:1+flush-179:009:45:191
2118676993832,4cyclictest3125725-21ThreadPoolForeg12:27:201
2118671993835,2cyclictest2299748-21kworker/u8:2+flush-179:010:15:150
2118671993834,3cyclictest2243559-21kworker/u8:0+flush-179:009:40:300
2118671993834,3cyclictest2243559-21kworker/u8:0+flush-179:009:40:290
2118671993834,3cyclictest2043024-1kworker/0:2H+kblockd08:26:350
2118671993834,2cyclictest2043024-1kworker/0:2H+kblockd12:01:170
2118671993834,2cyclictest2043024-1kworker/0:2H+kblockd11:50:580
2118671993833,4cyclictest3125687-21ThreadPoolForeg08:16:160
2118671993833,4cyclictest2206778-21kworker/u8:3+flush-179:008:45:390
2118671993833,4cyclictest2206778-21kworker/u8:3+flush-179:008:45:390
2118671993833,3cyclictest2404975-21chrome11:45:020
2118671993832,5cyclictest247515-21ThreadPoolForeg11:35:540
211867199380,37cyclictest3125728-13Compositor09:35:320
2118683993734,2cyclictest247563-13Compositor07:50:313
2118683993734,2cyclictest247563-13Compositor07:50:313
2118683993734,2cyclictest2170325-1kworker/3:0H+kblockd12:25:013
2118683993734,2cyclictest2170325-1kworker/3:0H+kblockd09:51:363
2118683993734,2cyclictest2170325-1kworker/3:0H+kblockd09:15:223
2118683993734,2cyclictest2170325-1kworker/3:0H+kblockd08:10:343
2118683993733,2cyclictest2087165-21kworker/u8:1+flush-179:007:35:063
2118683993732,4cyclictest247561-21ThreadPoolForeg08:17:343
2118683993732,3cyclictest2384082-21/usr/share/muni11:25:163
2118683993732,3cyclictest2135405-21/usr/share/muni07:25:163
2118683993726,10cyclictest2000587-1kworker/3:1H+kblockd07:34:413
2118683993722,14cyclictest3125721-21chrome09:04:403
211868399371,35cyclictest0-21swapper/310:21:453
2118680993736,1cyclictest2409941-21kworker/2:2+pm12:25:332
2118680993735,1cyclictest2409941-21kworker/2:2+pm12:22:582
2118680993735,1cyclictest2409941-21kworker/2:2+pm12:09:002
2118680993735,1cyclictest2409941-21kworker/2:2+pm11:58:512
2118680993735,1cyclictest2373221-21kworker/2:1+pm11:17:402
2118680993734,2cyclictest1528155-1kworker/2:0H+kblockd09:05:162
2118676993734,3cyclictest2077053-21kworker/u8:2+flush-179:008:06:451
2118676993734,2cyclictest1068850-1kworker/1:0H+kblockd10:46:171
2118676993734,2cyclictest1068850-1kworker/1:0H+kblockd09:32:121
2118676993734,1cyclictest1068850-1kworker/1:0H+kblockd12:33:401
2118676993734,1cyclictest1068850-1kworker/1:0H+kblockd07:38:391
2118676993731,5cyclictest2384094-21/usr/share/muni11:25:031
2118676993726,10cyclictest3125728-13Compositor08:02:061
2118676993718,14cyclictest2388087-21kworker/u8:1+flush-179:012:10:051
2118671993734,2cyclictest2230921-21kworker/0:0+pm09:13:290
2118671993734,2cyclictest2043024-1kworker/0:2H+kblockd11:01:000
2118671993734,2cyclictest2043024-1kworker/0:2H+kblockd11:00:590
2118671993734,2cyclictest2043024-1kworker/0:2H+kblockd09:17:150
2118671993734,2cyclictest2043024-1kworker/0:2H+kblockd08:08:530
2118671993733,2cyclictest2043024-1kworker/0:2H+kblockd09:00:010
2118683993633,2cyclictest3125721-21chrome08:53:583
2118683993633,2cyclictest3125627-21ChromeDriver00:55:193
2118683993633,2cyclictest2170325-1kworker/3:0H+kblockd11:45:143
2118683993633,2cyclictest2170325-1kworker/3:0H+kblockd11:31:273
2118683993633,2cyclictest2170325-1kworker/3:0H+kblockd09:27:393
2118683993632,3cyclictest2326263-21kworker/u8:3+flush-179:010:27:283
2118683993632,3cyclictest2243559-21kworker/u8:0+flush-179:010:50:313
211868399362,33cyclictest2310813-31munin-graph10:11:003
2118676993634,2cyclictest1068850-1kworker/1:0H+kblockd11:54:011
2118676993634,1cyclictest1068850-1kworker/1:0H+kblockd11:30:291
2118676993634,1cyclictest1068850-1kworker/1:0H+kblockd08:42:111
2118676993634,1cyclictest1068850-1kworker/1:0H+kblockd08:42:111
2118676993633,2cyclictest1068850-1kworker/1:0H+kblockd12:17:201
2118676993633,2cyclictest1068850-1kworker/1:0H+kblockd10:19:551
2118676993633,2cyclictest1068850-1kworker/1:0H+kblockd08:35:591
2118676993632,3cyclictest2250238-21apt-get09:15:131
2118676993632,3cyclictest2077053-21kworker/u8:2+flush-179:007:20:011
2118676993631,4cyclictest2243559-21kworker/u8:0+flush-179:009:29:401
211867699360,35cyclictest0-21swapper/111:20:121
2118671993633,2cyclictest2043024-1kworker/0:2H+kblockd12:09:050
2118671993633,2cyclictest2043024-1kworker/0:2H+kblockd11:55:170
2118671993633,2cyclictest2043024-1kworker/0:2H+kblockd11:43:450
2118671993633,2cyclictest2043024-1kworker/0:2H+kblockd10:53:560
2118671993633,2cyclictest2043024-1kworker/0:2H+kblockd10:45:230
2118671993632,3cyclictest2341977-21kworker/u8:3+flush-179:010:43:140
2118671993632,3cyclictest2150902-21/usr/share/muni07:40:160
2118671993631,4cyclictest2181591-21/usr/share/muni08:10:160
2118671993631,4cyclictest2172619-21apt-get08:00:130
2118671993630,4cyclictest2456228-21/usr/share/muni12:35:090
2118683993533,1cyclictest2170325-1kworker/3:0H+kblockd11:36:243
2118683993533,1cyclictest1989812-21kworker/3:1+pm08:33:203
2118683993532,2cyclictest3125630-13chrome12:09:353
2118683993532,2cyclictest2170325-1kworker/3:0H+kblockd12:10:253
2118683993531,3cyclictest2368168-21kworker/u8:0+flush-179:011:40:183
2118676993533,1cyclictest1068850-1kworker/1:0H+kblockd11:06:191
2118676993533,1cyclictest1068850-1kworker/1:0H+kblockd10:09:281
2118676993533,1cyclictest1068850-1kworker/1:0H+kblockd09:57:241
2118676993532,2cyclictest1068850-1kworker/1:0H+kblockd11:35:561
2118676993532,2cyclictest1068850-1kworker/1:0H+kblockd08:17:001
2118676993531,3cyclictest2102956-21kworker/u8:3+flush-179:007:25:341
2118676993531,2cyclictest1068850-1kworker/1:0H+kblockd12:03:511
2118676993529,4cyclictest2332276-21/usr/share/muni10:35:031
2118676993521,13cyclictest1260-21snmpd10:59:391
211867699350,34cyclictest0-21swapper/110:28:291
2118671993532,2cyclictest3125721-21chrome07:25:040
2118671993532,2cyclictest2043024-1kworker/0:2H+kblockd10:24:530
2118683993431,2cyclictest247563-13Compositor09:35:063
2118683993431,2cyclictest2170325-1kworker/3:0H+kblockd09:24:043
2118683993431,2cyclictest2170325-1kworker/3:0H+kblockd08:57:183
2118676993432,1cyclictest1068850-1kworker/1:0H+kblockd09:08:181
2118676993432,1cyclictest1068850-1kworker/1:0H+kblockd08:24:351
2118676993431,2cyclictest247563-13Compositor11:44:101
2118676993431,2cyclictest1068850-1kworker/1:0H+kblockd10:32:181
2118671993431,2cyclictest2043024-1kworker/0:2H+kblockd09:32:150
2118671993431,2cyclictest2043024-1kworker/0:2H+kblockd07:51:240
2118671993431,2cyclictest2043024-1kworker/0:2H+kblockd07:51:240
2118671993430,3cyclictest2368168-21kworker/u8:0+flush-179:011:15:230
2118683993331,1cyclictest2000587-1kworker/3:1H+kblockd07:23:333
2118683993330,2cyclictest2206778-21kworker/u8:3+flush-179:008:45:093
2118683993330,2cyclictest2206778-21kworker/u8:3+flush-179:008:45:083
2118683993330,2cyclictest2170325-1kworker/3:0H+kblockd11:16:033
2118683993330,2cyclictest2170325-1kworker/3:0H+kblockd08:01:073
2118683993329,3cyclictest2243559-21kworker/u8:0+flush-179:009:30:043
2118683993328,4cyclictest2284873-21kworker/u8:4+flush-179:010:00:173
2118676993332,1cyclictest1068850-1kworker/1:0H+kblockd11:56:501
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2118676993329,3cyclictest2199113-21kworker/u8:6+flush-179:009:00:421
2118676993328,4cyclictest247563-13Compositor12:06:201
2118676993328,3cyclictest2253737-21kworker/u8:3+flush-179:009:50:391
2118676993320,12cyclictest2229707-21mqtt_signal_tas08:55:121
2118671993330,2cyclictest2043024-1kworker/0:2H+kblockd08:51:090
2118671993330,2cyclictest2043024-1kworker/0:2H+kblockd07:56:150
2118671993327,3cyclictest2394314-21gpgv11:35:010
2118683993229,2cyclictest2199113-21kworker/u8:6+flush-179:008:35:103
2118683993229,2cyclictest1260-21snmpd11:06:063
2118683993228,3cyclictest2199113-21kworker/u8:6+flush-179:008:42:443
2118683993228,3cyclictest2199113-21kworker/u8:6+flush-179:008:42:443
2118683993227,3cyclictest1260-21snmpd10:15:073
2118676993230,1cyclictest1068850-1kworker/1:0H+kblockd08:33:111
2118676993229,2cyclictest247563-13Compositor07:22:431
2118676993225,5cyclictest2306185-21/usr/share/muni10:10:031
2118671993230,1cyclictest2043024-1kworker/0:2H+kblockd10:13:120
2118671993229,2cyclictest2043024-1kworker/0:2H+kblockd08:57:540
2118671993228,2cyclictest2043024-1kworker/0:2H+kblockd11:20:310
2118683993128,2cyclictest2228100-21kworker/u8:2+events_unbound09:10:283
2118676993129,1cyclictest1260-21snmpd09:40:331
2118676993129,1cyclictest1260-21snmpd09:40:331
2118676993128,2cyclictest3125726-13Chrome_ChildIOT07:41:501
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