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2026-08-20 - 12:09
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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 rackeslot2.osadl.org (updated Thu Aug 20, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
235287921060,2sleep30-21swapper/323:20:023
21096102750,2sleep30-21swapper/320:25:163
22998392690,1sleep12299838-21ssh22:43:251
23435142490,1sleep02343515-21ssh23:11:090
22402822460,2sleep30-21swapper/322:02:143
20611402300,2sleep30-21swapper/319:50:013
20611402300,2sleep30-21swapper/319:50:013
2015318992918,6cyclictest0-21swapper/022:30:020
2015319992818,8cyclictest2234467-21cpuspeed_turbos22:00:031
22996282270,1sleep00-21swapper/022:42:430
2015319992623,2cyclictest2382228-21awk23:40:011
2015319992620,2cyclictest69250irq/121-eno123:05:031
2015319992613,6cyclictest69250irq/121-eno123:15:021
23758312250,4sleep00-21swapper/023:35:060
2015318992519,5cyclictest2234480-21sh22:00:040
201531999249,9cyclictest0-21swapper/100:15:031
2015319992415,8cyclictest2036663-21sh19:30:011
2015319992415,7cyclictest0-21swapper/119:45:031
2015319992414,9cyclictest2367015-21apt-get23:29:431
23013502230,1sleep20-21swapper/222:45:062
201531999233,13cyclictest664-21dbus-daemon00:10:011
2015319992320,2cyclictest2464618-21grep00:35:031
2015319992320,2cyclictest2110259-21idleruntime-cro20:30:011
2015319992314,8cyclictest2067241-21/usr/sbin/munin19:55:001
2015319992314,8cyclictest2030551-21cron19:25:011
2015319992310,5cyclictest2208911-21ssh21:40:111
201531999228,3cyclictest0-21swapper/121:25:091
2015319992214,7cyclictest2257685-21kthreadcore22:15:071
2015319992212,9cyclictest2413416-21if_err_enp1s0.800:00:111
2015319992212,8cyclictest2256536-21cpuspeed_turbos22:15:021
2015319992212,2cyclictest2241690-21sh22:05:021
2015319992212,2cyclictest10930-21cron21:00:011
2015319992211,3cyclictest2015317-21cyclictest21:00:071
2015318992219,2cyclictest664-21dbus-daemon21:40:020
2015318992213,5cyclictest2320065-21kthreadcore22:55:100
2015318992212,4cyclictest0-21swapper/023:10:020
1157598220,5rtkit-daemon1053-21snmpd23:09:111
2015320992118,1cyclictest0-21swapper/222:25:012
201531999216,3cyclictest0-21swapper/122:49:021
2015319992113,7cyclictest2372523-21mailstats23:30:101
2015319992112,8cyclictest2309059-21irqcore22:50:071
2015319992112,8cyclictest2286774-21ethtool22:35:081
2015319992111,2cyclictest2323326-21cstates23:00:031
2015319992110,2cyclictest1309-21mta-sts-daemon19:10:151
2015318992118,2cyclictest2419803-21grep00:05:010
2015318992111,6cyclictest2015317-21cyclictest23:50:150
201531899210,16cyclictest2441749-21/usr/sbin/munin00:19:450
2015320992017,1cyclictest0-21swapper/222:40:012
201531999209,3cyclictest2125959-21kthreadcore20:40:081
2015319992011,8cyclictest2356873-21kthreadcore23:20:081
2015319992011,8cyclictest2223894-21rt-features21:50:131
2015319992011,2cyclictest2203903-21cron21:40:001
2015319992010,2cyclictest2218982-21cut21:50:021
2015319992010,2cyclictest2179423-21ptp4l-jitter21:20:141
2015319992010,2cyclictest2179423-21ptp4l-jitter21:20:141
2015319992010,2cyclictest2038085-21kthreadcore19:30:061
2015319992010,2cyclictest0-21swapper/122:35:021
201531899209,6cyclictest0-21swapper/021:45:110
2015318992017,2cyclictest2146810-21cron21:00:010
201531899200,14cyclictest1-21systemd23:45:030
3240591191,5phc2sys0-21swapper/321:44:443
2015320991917,1cyclictest0-21swapper/221:50:012
2015320991916,1cyclictest0-21swapper/221:00:012
2015320991916,1cyclictest0-21swapper/200:05:012
201531999199,4cyclictest1300-21mta-sts-daemon21:11:401
201531999199,2cyclictest2400456-21kthreadcore23:50:091
201531999199,2cyclictest2047783-21proc_pri19:35:111
201531999199,2cyclictest0-21swapper/121:15:041
201531999198,3cyclictest2113154-21kthreadcore20:30:071
201531999198,3cyclictest2099457-21kthreadcore20:20:081
2015319991917,1cyclictest2015317-21cyclictest23:45:021
2015319991914,4cyclictest351ktimers/123:16:261
2015319991912,2cyclictest2060548-21runrttasks19:45:251
2015319991912,2cyclictest2060548-21runrttasks19:45:251
2015319991911,2cyclictest2449618-21latency_hist00:25:021
2015319991910,2cyclictest2154277-21sed21:05:071
2015319991910,1cyclictest1157598rtkit-daemon00:29:111
2015319991910,1cyclictest1157598rtkit-daemon00:29:111
201531899198,6cyclictest0-21swapper/021:40:080
201531899193,5cyclictest491rcuog/200:25:230
201531899193,5cyclictest491rcuog/200:25:230
2015318991916,2cyclictest2055575-21cstates19:45:030
2015318991916,2cyclictest2043043-21cpuspeed19:35:030
2015318991915,2cyclictest0-21swapper/021:25:030
2015318991915,2cyclictest0-21swapper/021:25:030
2015318991913,5cyclictest759-1atopacctd22:35:260
2015318991913,5cyclictest1300-21mta-sts-daemon00:38:060
2015318991911,6cyclictest0-21swapper/020:30:020
23365142180,2sleep20-21swapper/223:07:222
201531999189,2cyclictest2246616-21mailstats22:05:141
201531999189,2cyclictest2140111-21unixbench_singl20:50:131
201531999189,2cyclictest2095433-21kthreadcore20:15:101
201531999189,2cyclictest2024596-21systemd-run19:20:011
201531999188,2cyclictest2075027-21kthreadcore20:00:111
2015319991812,2cyclictest69250irq/121-eno123:50:021
2015319991811,2cyclictest1307-21mta-sts-daemon22:20:591
2015319991810,2cyclictest1306-21mta-sts-daemon00:15:061
201531899188,5cyclictest0-21swapper/000:10:130
2015318991815,2cyclictest759-1atopacctd23:35:030
2015318991815,2cyclictest2395615-21grep23:45:150
2015318991815,2cyclictest2365149-21python323:25:130
2015318991815,2cyclictest2224244-21grep21:50:150
2015318991815,2cyclictest1306-21mta-sts-daemon21:25:080
2015318991810,4cyclictest2325162-21ssh23:00:080
3240591171,3phc2sys0-21swapper/321:15:033
3240591170,2phc2sys0-21swapper/321:20:083
3240591170,2phc2sys0-21swapper/321:20:083
2015320991715,1cyclictest0-21swapper/223:20:022
2015320991715,1cyclictest0-21swapper/221:45:032
2015320991715,1cyclictest0-21swapper/200:10:022
2015320991714,1cyclictest0-21swapper/222:41:282
2015320991714,1cyclictest0-21swapper/222:20:012
2015320991714,1cyclictest0-21swapper/221:55:012
2015320991714,1cyclictest0-21swapper/221:05:082
2015320991714,1cyclictest0-21swapper/220:30:102
2015320991714,1cyclictest0-21swapper/200:30:022
2015320991714,1cyclictest0-21swapper/200:30:022
2015320991714,1cyclictest0-21swapper/200:00:012
201532099171,10cyclictest0-21swapper/220:00:012
201531999179,2cyclictest0-21swapper/120:10:001
201531999174,3cyclictest2159327-21diskmemload00:36:521
2015319991714,2cyclictest2196675-21ssh21:35:031
201531999170,6cyclictest2412322-21cmp00:00:011
201531899178,5cyclictest2244925-21kthreadcore22:05:100
201531899178,2cyclictest2449546-21munin-plugin-st00:25:020
201531899177,5cyclictest0-21swapper/023:19:520
201531899177,5cyclictest0-21swapper/000:30:060
2015318991714,2cyclictest2280746-21kthreadcore22:30:090
2015318991714,2cyclictest2263638-21munin-run22:20:010
2015318991714,2cyclictest2168347-21kthreadcore21:15:080
2015318991714,2cyclictest2104287-21systemd-run20:25:010
2015318991714,2cyclictest2015317-21cyclictest20:10:010
2015318991714,2cyclictest0-21swapper/020:45:010
2015318991713,2cyclictest2427402-21cpu00:10:020
2015318991713,2cyclictest0-21swapper/019:40:020
3240591160,2phc2sys0-21swapper/322:45:353
3240591160,2phc2sys0-21swapper/319:05:183
3240591160,1phc2sys0-21swapper/323:22:573
2015320991614,1cyclictest0-21swapper/223:35:022
2015320991614,1cyclictest0-21swapper/223:30:022
2015320991614,1cyclictest0-21swapper/223:00:032
2015320991614,1cyclictest0-21swapper/220:45:022
2015320991613,1cyclictest0-21swapper/223:54:502
2015320991613,1cyclictest0-21swapper/221:40:012
2015320991613,1cyclictest0-21swapper/220:40:012
2015320991613,1cyclictest0-21swapper/219:50:142
2015320991613,1cyclictest0-21swapper/219:15:012
2015320991612,2cyclictest0-21swapper/220:30:022
2015320991612,2cyclictest0-21swapper/220:10:002
2015320991612,2cyclictest0-21swapper/219:35:022
201531999168,3cyclictest2071641-21kthreadcore19:55:091
2015319991611,3cyclictest2122623-21latency_hist20:40:021
201531899168,7cyclictest2303838-21tr22:45:100
201531899168,6cyclictest0-21swapper/021:10:070
201531899165,6cyclictest0-21swapper/022:10:140
2015318991613,2cyclictest2270999-21sh22:25:010
2015318991613,2cyclictest2153023-21apt-key21:05:010
2015318991613,2cyclictest2023082-21kthreadcore19:15:030
2015318991612,3cyclictest2153342-21kworker/u16:2+nfsiod22:52:190
2015318991612,3cyclictest2036411-21kworker/u16:1+nfsiod22:03:340
2015318991610,2cyclictest69250irq/121-eno121:05:110
3240591152,2phc2sys0-21swapper/319:25:023
3240591150,2phc2sys0-21swapper/322:56:393
3240591150,2phc2sys0-21swapper/300:09:073
201532099158,2cyclictest0-21swapper/222:52:242
201532099151,5cyclictest0-21swapper/222:00:012
2015320991513,1cyclictest0-21swapper/223:01:242
2015320991513,1cyclictest0-21swapper/221:20:022
2015320991513,1cyclictest0-21swapper/221:10:072
2015320991513,1cyclictest0-21swapper/219:10:022
2015320991512,1cyclictest0-21swapper/223:15:012
2015320991512,1cyclictest0-21swapper/222:10:042
2015320991512,1cyclictest0-21swapper/222:02:272
2015320991512,1cyclictest0-21swapper/220:10:082
2015320991511,2cyclictest0-21swapper/222:33:162
2015320991511,2cyclictest0-21swapper/220:15:092
2015320991510,2cyclictest0-21swapper/221:31:022
201532099150,2cyclictest0-21swapper/220:22:272
201532099150,13cyclictest2449615-21chrt00:25:022
201532099150,12cyclictest2464208-21chrt00:34:562
201532099150,12cyclictest2174803-21chrt21:20:052
201532099150,12cyclictest2174803-21chrt21:20:052
201532099150,12cyclictest2024430-21chrt19:19:592
2015319991511,3cyclictest1309-21mta-sts-daemon22:26:261
201531899156,5cyclictest0-21swapper/020:13:140
2015318991512,2cyclictest2412575-21sh00:00:020
2015318991512,2cyclictest2135458-21tail20:50:040
2015318991512,2cyclictest2067217-21apt-key19:55:000
2015318991512,2cyclictest2034465-21kthreadcore19:25:090
2015318991512,2cyclictest1306-21mta-sts-daemon20:18:540
2015318991512,2cyclictest0-21swapper/020:50:010
2015318991511,3cyclictest2192539-21kthreadcore21:30:100
2015318991511,3cyclictest2122442-21munin-run20:40:010
3240591145,2phc2sys0-21swapper/320:35:063
3240591144,2phc2sys0-21swapper/323:28:583
3240591140,3phc2sys0-21swapper/322:54:463
3240591140,2phc2sys0-21swapper/322:18:583
3240591140,2phc2sys0-21swapper/321:34:103
3240591140,2phc2sys0-21swapper/300:11:553
2015320991412,1cyclictest0-21swapper/221:05:032
2015320991412,1cyclictest0-21swapper/219:40:022
2015320991412,1cyclictest0-21swapper/219:30:022
2015320991411,1cyclictest0-21swapper/222:25:062
2015320991411,1cyclictest0-21swapper/219:43:012
201532099141,10cyclictest2134654-21turbostat20:50:012
201532099140,2cyclictest0-21swapper/200:16:412
201532099140,12cyclictest2434524-21chrt00:14:562
2015319991411,2cyclictest2087252-21kthreadcore20:10:081
2015319991410,2cyclictest0-21swapper/119:10:021
201531899146,4cyclictest2356236-21kthreadcore23:20:080
2015318991411,2cyclictest2069537-21kthreadcore19:55:080
2015318991411,2cyclictest2027406-21kthreadcore19:20:090
2015318991411,2cyclictest2023582-21sort19:15:030
2015318991410,3cyclictest2060232-21switchtime19:45:130
2015318991410,3cyclictest2060232-21switchtime19:45:130
3240591131,4phc2sys0-21swapper/300:39:473
3240591131,2phc2sys0-21swapper/320:00:073
3240591130,2phc2sys0-21swapper/323:01:243
3240591130,2phc2sys0-21swapper/322:30:053
3240591130,2phc2sys0-21swapper/321:48:453
3240591130,2phc2sys0-21swapper/321:37:233
2015320991311,1cyclictest0-21swapper/223:45:102
2015320991311,1cyclictest0-21swapper/223:40:082
2015320991311,1cyclictest0-21swapper/220:50:102
2015320991311,1cyclictest0-21swapper/219:45:042
2015320991311,1cyclictest0-21swapper/219:45:042
2015320991311,1cyclictest0-21swapper/219:20:082
2015320991311,1cyclictest0-21swapper/200:35:132
2015320991310,2cyclictest0-21swapper/223:20:062
2015320991310,1cyclictest0-21swapper/223:39:202
201532099130,11cyclictest2189047-21chrt21:29:592
201532099130,11cyclictest2079681-21chrt20:04:592
201531999138,4cyclictest1309-21mta-sts-daemon20:49:231
201531899139,3cyclictest2111661-21kthreadcore20:30:060
2015318991310,2cyclictest2015317-21cyclictest20:00:110
3240591123,4phc2sys0-21swapper/323:05:093
3240591120,6phc2sys0-21swapper/320:34:453
3240591120,3phc2sys0-21swapper/322:25:363
3240591120,3phc2sys0-21swapper/320:44:453
3240591120,2phc2sys0-21swapper/323:44:493
3240591120,2phc2sys0-21swapper/322:06:453
3240591120,2phc2sys0-21swapper/321:55:043
3240591120,2phc2sys0-21swapper/300:28:053
3240591120,2phc2sys0-21swapper/300:28:053
3240591120,1phc2sys0-21swapper/322:36:183
3240591120,1phc2sys0-21swapper/322:20:233
3240591120,1phc2sys0-21swapper/321:19:033
2015320991210,1cyclictest0-21swapper/222:05:082
3240591113,3phc2sys0-21swapper/320:55:023
3240591113,2phc2sys0-21swapper/322:13:063
3240591112,2phc2sys0-21swapper/321:25:093
3240591112,2phc2sys0-21swapper/319:30:153
3240591110,2phc2sys0-21swapper/323:55:153
3240591110,2phc2sys0-21swapper/323:30:103
3240591110,2phc2sys0-21swapper/321:55:023
3240591110,2phc2sys0-21swapper/320:56:143
3240591110,2phc2sys0-21swapper/319:59:483
3240591110,2phc2sys0-21swapper/300:21:023
3240591110,1phc2sys0-21swapper/323:10:173
3240591110,1phc2sys0-21swapper/319:14:283
201531899118,2cyclictest0-21swapper/019:10:020
3240591102,2phc2sys0-21swapper/300:34:233
3240591102,2phc2sys0-21swapper/300:19:243
3240591101,3phc2sys0-21swapper/322:43:163
3240591101,2phc2sys0-21swapper/323:45:093
3240591101,2phc2sys0-21swapper/320:20:123
3240591101,2phc2sys0-21swapper/300:01:443
3240591100,2phc2sys0-21swapper/323:38:323
3240591100,2phc2sys0-21swapper/320:09:463
3240591100,2phc2sys0-21swapper/319:50:063
3240591100,2phc2sys0-21swapper/319:35:083
3240591100,2phc2sys0-21swapper/319:17:163
3240591100,1phc2sys0-21swapper/323:50:043
3240591100,1phc2sys0-21swapper/320:46:053
324059191,3phc2sys0-21swapper/319:25:143
324059191,2phc2sys0-21swapper/320:15:073
324059190,2phc2sys0-21swapper/321:05:053
324059190,2phc2sys0-21swapper/321:00:083
324059190,2phc2sys0-21swapper/320:10:103
324059190,2phc2sys0-21swapper/319:40:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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