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2026-07-22 - 23:43
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Wed Jul 22, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
222012999135125,7cyclictest2266177-21latency_hist09:30:011
222012799133124,6cyclictest2244346-21kworker/u8:1+flush-179:008:40:200
222012999130120,7cyclictest2314740-21latency_hist12:00:011
222012999123115,5cyclictest2252672-21apt-get08:50:021
222012999122110,9cyclictest1213033-21systemd-journal10:30:011
222012999122110,9cyclictest1213033-21systemd-journal10:30:011
222012799122111,8cyclictest2244445-21latency_hist08:25:000
222012999121112,6cyclictest2252672-21apt-get08:50:001
222012999121110,7cyclictest2306518-21apt-get11:35:001
222012799116109,5cyclictest2257739-21kworker/u8:3+flush-179:009:50:200
222012799115103,9cyclictest2300132-21latency_hist11:15:010
222012799113104,6cyclictest2279221-21kworker/u8:0+flush-179:011:20:160
22201299911098,9cyclictest2264631-21gpgv09:25:001
22201299911098,8cyclictest1213033-21systemd-journal12:35:011
222012799108100,6cyclictest2234652-21kworker/u8:3+flush-179:008:05:220
22201279910784,20cyclictest2293762-21latency_hist10:55:010
222012799105100,3cyclictest2303312-21kworker/u8:1+flush-179:011:30:110
22201299910494,8cyclictest2259803-21apt-get09:10:091
22201299910395,5cyclictest2269889-21apt-get09:40:101
22201279910395,5cyclictest2257680-21kworker/u8:0+flush-179:009:05:150
22201279910395,5cyclictest2213973-21kworker/u8:3+flush-179:007:20:200
22201299910292,7cyclictest2272807-21latency_hist09:50:011
22201279910295,5cyclictest2321377-21kworker/u8:0+flush-179:012:30:210
22201279910295,5cyclictest2303312-21kworker/u8:1+flush-179:011:35:170
22201279910195,4cyclictest2218515-21kworker/u8:2+events_unbound07:20:000
22201279910194,5cyclictest2290568-21kworker/u8:2+flush-179:011:25:160
22201299910093,5cyclictest2324295-21latency_hist12:30:011
22201299910090,7cyclictest2316338-21latency_hist12:05:021
22201279910093,5cyclictest2213973-21kworker/u8:3+flush-179:007:35:160
22201279910089,8cyclictest2247618-21latency_hist08:35:020
2220129999988,8cyclictest2228478-21apt-get07:35:121
2220129999987,9cyclictest1213033-21systemd-journal07:15:261
2220127999992,5cyclictest2239408-21kworker/u8:2+flush-179:008:10:240
2220127999991,5cyclictest2239408-21kworker/u8:2+flush-179:008:20:020
2220129999889,6cyclictest2215684-21kworker/u8:0+flush-179:007:10:251
2220127999891,5cyclictest2218515-21kworker/u8:2+flush-179:007:50:010
2220127999787,8cyclictest2317903-21kworker/u8:3+events_unbound12:10:000
2220127999690,4cyclictest2279221-21kworker/u8:0+flush-179:010:35:240
2220127999688,5cyclictest2257739-21kworker/u8:3+flush-179:009:35:180
2220129999589,5cyclictest2303312-21kworker/u8:1+flush-179:011:40:001
2220127999587,5cyclictest2257739-21kworker/u8:3+events_unbound10:10:230
2220129999487,5cyclictest2321377-21kworker/u8:0+flush-179:012:30:201
2220129999385,5cyclictest2312721-21kworker/u8:2+flush-179:012:05:241
2220127999387,4cyclictest2304956-21kworker/u8:0+events_unbound11:50:010
2220127999386,5cyclictest2244346-21kworker/u8:1+flush-179:008:50:140
2220129999280,9cyclictest1213033-21systemd-journal11:20:011
2220127999285,5cyclictest2287371-21kworker/u8:1+flush-179:010:40:230
2220129999181,6cyclictest2244346-21kworker/u8:1+flush-179:008:35:221
2220129999084,4cyclictest2213973-21kworker/u8:3+flush-179:007:20:151
2220127999085,3cyclictest1-21systemd12:40:010
2220129998964,22cyclictest2259301-21apt-get09:10:001
2220127998981,5cyclictest2304956-21kworker/u8:0+flush-179:011:55:220
2220127998981,5cyclictest2218515-21kworker/u8:2+events_unbound07:30:130
2220127998981,5cyclictest2218515-21kworker/u8:2+events_unbound07:30:130
2220127998882,4cyclictest2257739-21kworker/u8:3+flush-179:009:20:190
2220129998778,5cyclictest2257680-21kworker/u8:0+flush-179:009:30:181
2220127998781,4cyclictest2276038-21kworker/u8:2+flush-179:010:00:170
2220129998678,5cyclictest2298545-21latency_hist11:10:011
2220127998578,5cyclictest2257680-21kworker/u8:0+flush-179:009:25:250
2220129998478,4cyclictest2257739-21kworker/u8:3+flush-179:010:20:221
2220129998476,6cyclictest2276038-21kworker/u8:2+events_unbound10:05:001
2220129998475,7cyclictest2288986-21latency_hist10:40:011
2220129998475,6cyclictest2218515-21kworker/u8:2+flush-179:007:25:231
2220127998478,5cyclictest2276038-21kworker/u8:2+flush-179:010:05:160
2220127998471,10cyclictest1213033-21systemd-journal10:20:000
2220129998376,4cyclictest2276038-21kworker/u8:2+flush-179:010:05:141
2220129998371,9cyclictest2234652-21kworker/u8:3+flush-179:008:05:181
2220127998377,4cyclictest2303312-21kworker/u8:1+events_unbound11:55:010
2220129998276,4cyclictest2287396-21latency_hist10:35:011
2220129998275,5cyclictest2218515-21kworker/u8:2+flush-179:007:50:241
2220129998275,5cyclictest2218515-21kworker/u8:2+flush-179:007:50:231
2220127998275,4cyclictest2257739-21kworker/u8:3+events_unbound09:40:130
2220129998173,5cyclictest2290568-21kworker/u8:2+events_unbound11:25:251
2220129998172,6cyclictest2218515-21kworker/u8:2+flush-179:007:30:201
2220129998172,6cyclictest2218515-21kworker/u8:2+flush-179:007:30:191
2220129998170,8cyclictest2295365-21latency_hist11:00:011
2220127998174,5cyclictest2257680-21kworker/u8:0+flush-179:009:20:010
2220129998069,8cyclictest2237816-21latency_hist08:05:001
2220129997970,5cyclictest2321377-21kworker/u8:0+events_unbound12:20:191
2220127997972,5cyclictest2257680-21kworker/u8:0+flush-179:009:55:250
2220127997972,5cyclictest2244346-21kworker/u8:1+flush-179:008:35:170
2220127997968,9cyclictest2244699-21apt-get08:25:130
2220129997869,6cyclictest2292431-21apt-get10:50:121
2220129997764,10cyclictest1213033-21systemd-journal10:45:001
2220127997769,6cyclictest2279221-21kworker/u8:0+flush-179:011:15:150
2220127997768,7cyclictest2304956-21kworker/u8:0+events_unbound11:44:590
2220127997670,4cyclictest2215684-21kworker/u8:0+flush-179:007:10:160
2220127997669,5cyclictest2290635-21kworker/u8:3+flush-179:010:45:210
2220129997568,5cyclictest2301998-21apt-get11:20:101
2220127997567,7cyclictest2213973-21kworker/u8:3+flush-179:007:30:000
2220129997452,20cyclictest2292176-21latency_hist10:50:011
2220127997468,4cyclictest2290568-21kworker/u8:2+flush-179:011:05:220
2220127997465,7cyclictest2234618-21latency_hist07:55:010
2220127997465,7cyclictest2234618-21latency_hist07:55:010
222012799740,72cyclictest1-21systemd08:00:010
2220127997366,5cyclictest2303312-21kworker/u8:1+events_unbound12:15:160
2220127997364,7cyclictest2295626-21apt-get11:00:120
2220129997166,3cyclictest2257680-21kworker/u8:0+flush-179:009:15:181
2220127997166,4cyclictest2257680-21kworker/u8:0+events_unbound09:10:220
2220127997165,4cyclictest2257739-21kworker/u8:3+events_unbound10:30:150
2220129997063,5cyclictest2257739-21kworker/u8:3+flush-179:009:40:011
2220129997061,7cyclictest2257680-21kworker/u8:0+flush-179:009:55:001
2220129997061,6cyclictest2317903-21kworker/u8:3+flush-179:012:10:161
2220129996961,6cyclictest2303312-21kworker/u8:1+flush-179:012:15:151
2220127996965,3cyclictest2279221-21kworker/u8:0+flush-179:010:25:170
2220127996965,3cyclictest2279221-21kworker/u8:0+flush-179:010:25:170
2220127996962,5cyclictest2257680-21kworker/u8:0+events_unbound09:30:020
2220129996862,4cyclictest2252642-21kworker/u8:2+flush-179:009:00:231
2220129996762,3cyclictest2303312-21kworker/u8:1+flush-179:011:50:141
2220129996760,5cyclictest2303312-21kworker/u8:1+flush-179:011:40:201
2220129996755,9cyclictest510-21rs:main1
2220127996760,5cyclictest2244346-21kworker/u8:1+flush-179:008:55:160
2220127996760,5cyclictest2230110-21apt-get07:40:130
2220129996656,7cyclictest1213033-21systemd-journal08:43:341
2220129996557,5cyclictest2239408-21kworker/u8:2+flush-179:008:10:231
2220127996562,2cyclictest0-21swapper/012:24:590
2220127996559,5cyclictest2317903-21kworker/u8:3+flush-179:012:25:220
2220129996357,4cyclictest2239139-21kworker/u8:0+events_unbound08:25:221
2220127996358,3cyclictest2244346-21kworker/u8:1+flush-179:008:45:180
2220129996256,4cyclictest2218515-21kworker/u8:2+flush-179:007:45:161
2220129996253,7cyclictest2241242-21apt-get08:15:121
2220129996253,6cyclictest1213033-21systemd-journal08:58:261
2220129996156,4cyclictest2239139-21kworker/u8:0+events_unbound08:30:251
2220129995951,6cyclictest2234652-21kworker/u8:3+flush-179:008:20:221
2220127995951,6cyclictest2290568-21kworker/u8:2+flush-179:010:55:160
2220129995851,5cyclictest2279221-21kworker/u8:0+events_unbound11:10:141
2220127995854,3cyclictest2234603-21kworker/u8:1+flush-179:008:00:280
2220132995754,2cyclictest0-21swapper/210:50:592
2220127995650,5cyclictest2303312-21kworker/u8:1+flush-179:012:00:260
2220132995552,2cyclictest0-21swapper/208:01:592
2220132995349,2cyclictest0-21swapper/210:36:592
2220127995249,2cyclictest714-21Xorg10:22:590
2220133995149,1cyclictest0-21swapper/310:37:003
2220127995146,4cyclictest2303312-21kworker/u8:1+events_unbound12:10:210
2220132995047,2cyclictest0-21swapper/212:20:592
2220129995044,5cyclictest2257739-21kworker/u8:3+flush-179:010:15:211
2220127995043,5cyclictest2257739-21kworker/u8:3+events_unbound09:45:150
2220133994947,1cyclictest0-21swapper/312:21:003
2220129994942,5cyclictest2274630-21kworker/u8:1+flush-179:009:55:271
4577091480,13ptp4l61490irq/134-eno1-TxRx-007:09:553
2220129994841,2cyclictest2279221-21kworker/u8:0+events_unbound10:10:151
2220129994741,4cyclictest2279221-21kworker/u8:0+flush-179:011:00:261
2220129994440,3cyclictest484-21dbus-daemon07:45:011
2220129994439,4cyclictest2304956-21kworker/u8:0+events_unbound11:45:231
222013399430,1cyclictest0-21swapper/311:46:593
2220132994339,2cyclictest0-21swapper/208:54:002
2220133994239,2cyclictest0-21swapper/308:53:593
2220133994134,5cyclictest2290600-21turbostat10:45:003
2220132994133,7cyclictest0-21swapper/211:22:592
222013399400,37cyclictest0-21swapper/311:42:583
2220132994036,2cyclictest0-21swapper/210:29:592
2220132994036,2cyclictest0-21swapper/210:29:592
2220132994032,7cyclictest0-21swapper/208:47:582
2220132994030,7cyclictest0-21swapper/209:34:552
222013299400,1cyclictest0-21swapper/211:46:582
2220127994036,3cyclictest2257712-21grep09:05:000
2220133993933,5cyclictest0-21swapper/308:47:593
2220133993932,6cyclictest0-21swapper/311:22:593
2220133993931,7cyclictest0-21swapper/309:34:553
222013399390,36cyclictest2277597-21turbostat10:05:003
222013299390,36cyclictest0-21swapper/212:29:562
222013299390,30cyclictest0-21swapper/209:11:002
222013299390,2cyclictest0-21swapper/209:23:592
2220133993832,5cyclictest2239417-21turbostat08:10:003
222013399380,37cyclictest0-21swapper/311:35:003
2220132993834,2cyclictest0-21swapper/211:30:582
2220129993829,7cyclictest2219977-21latency_hist07:10:021
2220133993735,1cyclictest0-21swapper/310:29:593
2220133993735,1cyclictest0-21swapper/310:29:593
2220132993733,2cyclictest0-21swapper/208:29:592
222013299370,35cyclictest0-21swapper/211:42:592
2220133993633,2cyclictest0-21swapper/309:36:003
2220133993633,2cyclictest0-21swapper/308:29:593
222013399360,35cyclictest0-21swapper/312:29:563
222013399360,1cyclictest0-21swapper/309:24:003
222013399360,1cyclictest0-21swapper/309:10:593
2220132993634,1cyclictest0-21swapper/210:45:002
2220132993633,2cyclictest0-21swapper/209:35:592
222013299360,1cyclictest0-21swapper/210:05:002
222013299360,1cyclictest0-21swapper/208:42:592
2220132993532,2cyclictest0-21swapper/208:34:582
2220132993531,2cyclictest0-21swapper/207:48:592
2220133993432,1cyclictest0-21swapper/307:48:593
2220133993431,1cyclictest0-21swapper/311:10:593
2220132993430,2cyclictest0-21swapper/211:16:592
2220132993430,2cyclictest0-21swapper/211:10:592
2220132993430,2cyclictest0-21swapper/208:37:002
2220132993430,2cyclictest0-21swapper/207:42:592
222013299340,2cyclictest0-21swapper/207:25:032
2220133993331,1cyclictest0-21swapper/309:55:003
2220133993331,1cyclictest0-21swapper/308:34:593
2220132993331,1cyclictest0-21swapper/209:54:592
2220132993331,1cyclictest0-21swapper/208:10:002
2220133993230,1cyclictest0-21swapper/311:16:593
2220133993230,1cyclictest0-21swapper/308:36:593
2220133993230,1cyclictest0-21swapper/307:43:003
222013399320,1cyclictest0-21swapper/307:25:023
2220132993229,2cyclictest0-21swapper/207:21:592
4577091310,3ptp4l431rcuc/308:44:593
2220132993121,8cyclictest0-21swapper/212:04:002
222013299310,29cyclictest0-21swapper/208:20:032
4577091300,7ptp4l61490irq/134-eno1-TxRx-012:20:003
2220133993028,1cyclictest0-21swapper/312:30:123
2220133993028,1cyclictest0-21swapper/307:21:583
2220133993026,2cyclictest0-21swapper/309:30:013
2220133993022,7cyclictest0-21swapper/312:04:003
222013399300,28cyclictest0-21swapper/309:00:143
2220132993027,2cyclictest0-21swapper/212:30:132
222013299300,2cyclictest0-21swapper/211:50:152
222013299300,29cyclictest0-21swapper/211:05:132
222013299300,28cyclictest0-21swapper/211:35:122
222013299300,27cyclictest0-21swapper/212:05:152
222013299300,1cyclictest0-21swapper/210:05:132
4577091290,6ptp4l61490irq/134-eno1-TxRx-010:00:003
4577091290,6ptp4l441ktimers/312:10:003
4577091290,6ptp4l441ktimers/309:20:003
4577091290,6ptp4l441ktimers/307:20:013
4577091290,5ptp4l441ktimers/309:50:013
2220133992921,6cyclictest2280772-21turbostat10:15:003
222013399290,2cyclictest0-21swapper/311:50:153
222013399290,2cyclictest0-21swapper/307:30:123
222013399290,2cyclictest0-21swapper/307:30:123
222013399290,28cyclictest0-21swapper/311:05:133
222013399290,27cyclictest0-21swapper/311:35:123
222013399290,27cyclictest0-21swapper/310:50:133
222013399290,27cyclictest0-21swapper/308:20:023
222013399290,1cyclictest0-21swapper/310:05:133
2220132992925,2cyclictest0-21swapper/212:39:542
2220132992925,2cyclictest0-21swapper/209:05:582
222013299290,2cyclictest0-21swapper/209:00:142
222013299290,28cyclictest0-21swapper/207:30:122
222013299290,28cyclictest0-21swapper/207:30:112
4577091280,6ptp4l441ktimers/311:59:563
4577091280,6ptp4l441ktimers/309:44:593
4577091280,5ptp4l441ktimers/312:40:013
4577091280,5ptp4l441ktimers/311:05:013
2220132992825,2cyclictest0-21swapper/210:32:592
2220132992825,2cyclictest0-21swapper/209:30:022
222013299280,24cyclictest0-21swapper/209:48:582
4577091270,7ptp4l61490irq/134-eno1-TxRx-011:29:593
4577091270,6ptp4l61490irq/134-eno1-TxRx-012:14:553
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:19:553
4577091270,5ptp4l61490irq/134-eno1-TxRx-010:59:563
4577091270,5ptp4l441ktimers/308:04:553
2220133992725,1cyclictest0-21swapper/310:32:593
2220133992725,1cyclictest0-21swapper/309:05:583
2220133992725,1cyclictest0-21swapper/308:16:593
2220132992724,2cyclictest0-21swapper/212:16:592
2220132992723,2cyclictest0-21swapper/208:15:142
222013299270,2cyclictest0-21swapper/207:15:582
4577091260,5ptp4l61490irq/134-eno1-TxRx-010:50:013
4577091260,5ptp4l441ktimers/307:39:553
4577091260,4ptp4l61490irq/134-eno1-TxRx-010:24:553
2220133992624,1cyclictest0-21swapper/307:52:593
2220133992624,1cyclictest0-21swapper/307:52:593
2220132992623,2cyclictest0-21swapper/210:13:592
2220132992623,2cyclictest0-21swapper/207:53:002
2220132992623,2cyclictest0-21swapper/207:52:592
2220132992622,2cyclictest0-21swapper/210:20:592
4577091250,5ptp4l441ktimers/308:14:563
4577091250,3ptp4l61490irq/134-eno1-TxRx-008:00:003
2220132992522,2cyclictest0-21swapper/208:55:142
2220132992522,2cyclictest0-21swapper/208:11:592
2220132992521,2cyclictest0-21swapper/209:42:002
2220132992518,6cyclictest0-21swapper/211:55:142
2220132992421,2cyclictest0-21swapper/207:38:002
2220133992321,1cyclictest0-21swapper/308:55:143
231999220,12rtkit-daemon908065-21snmpd07:09:570
2220132992118,2cyclictest0-21swapper/211:25:142
2220132992117,2cyclictest0-21swapper/210:45:592
2220132992112,7cyclictest0-21swapper/207:59:592
2220132991916,2cyclictest0-21swapper/210:00:002
2220133991714,2cyclictest0-21swapper/307:10:123
2220132991713,2cyclictest0-21swapper/211:05:002
2220132991713,2cyclictest0-21swapper/210:15:132
2220132991713,2cyclictest0-21swapper/207:10:112
2220132991511,2cyclictest2295369-21turbostat11:00:002
2220132991310,2cyclictest0-21swapper/212:10:592
222013299110,1cyclictest0-21swapper/209:19:552
22201329990,1cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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