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2026-08-20 - 16:16
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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 rack0slot2.osadl.org (updated Thu Aug 20, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174371425622,29sleep70-21swapper/707:06:057
174380325443,8sleep40-21swapper/407:07:224
174358824535,7sleep50-21swapper/507:04:185
1744105994139,2cyclictest2358743-21kworker/u16:3+events_unbound12:08:104
1744105993634,2cyclictest2334167-21kworker/u16:2+events_unbound11:34:534
1744105993634,2cyclictest2139311-21kworker/u16:3+events_unbound10:46:054
1744105993634,2cyclictest1951666-21kworker/u16:2+events_unbound11:07:294
1744105993533,2cyclictest2419016-21kworker/u16:0+flush-8:012:13:124
1744105993533,2cyclictest2235210-21kworker/u16:0+events_unbound10:51:304
1744122993429,4cyclictest648-21systemd-journal10:22:297
1744105993432,2cyclictest2467608-21kworker/u16:0+events_unbound12:27:174
1744105993432,2cyclictest2176419-21kworker/u16:4+events_unbound10:35:184
1744105993331,2cyclictest2372553-21kworker/u16:4+events_unbound11:59:224
1744105993331,2cyclictest2176419-21kworker/u16:4+events_unbound10:58:304
1744105993331,2cyclictest2126793-21kworker/u16:0+events_unbound10:10:494
1744105993331,2cyclictest2113044-21kworker/u16:1+events_unbound10:16:174
1744105993331,2cyclictest1874113-21kworker/u16:4+events_unbound09:34:024
174357823323,7sleep60-21swapper/607:04:116
1744113993230,2cyclictest2176419-21kworker/u16:4+flush-8:010:58:015
1744113993230,2cyclictest2076948-21kworker/u16:0+events_unbound09:58:015
1744105993231,1cyclictest2372553-21kworker/u16:4+events_unbound12:04:584
1744105993230,2cyclictest2358743-21kworker/u16:3+events_unbound11:46:584
1744105993230,2cyclictest2297891-21kworker/u16:1+events_unbound11:42:264
1744105993230,2cyclictest2297891-21kworker/u16:1+events_unbound11:29:384
1744105993230,2cyclictest2250193-21kworker/u16:3+flush-8:011:15:264
1744105993230,2cyclictest1951666-21kworker/u16:2+events_unbound10:38:494
1744105993230,2cyclictest1951666-21kworker/u16:2+events_unbound09:58:224
1744105993230,2cyclictest1951666-21kworker/u16:2+events_unbound09:14:064
1744105993230,2cyclictest1941764-21kworker/u16:0+events_unbound09:29:384
1744105993229,2cyclictest1951666-21kworker/u16:2+events_unbound10:52:384
174412299310,29cyclictest2335467-21latency_hist11:32:347
1744105993129,2cyclictest2372126-21kworker/u16:2+events_unbound11:51:414
1744105993129,2cyclictest2297891-21kworker/u16:1+events_unbound11:27:334
1744105993129,2cyclictest2052245-21kworker/u16:1+flush-8:009:48:334
1744105993129,2cyclictest1874113-21kworker/u16:4+events_unbound09:18:464
1744105993029,1cyclictest1874113-21kworker/u16:4+events_unbound09:23:414
1744105993028,2cyclictest2467608-21kworker/u16:0+events_unbound12:31:414
1744105993028,2cyclictest2139311-21kworker/u16:3+flush-8:010:18:214
1744105993028,2cyclictest2113044-21kworker/u16:1+events_unbound10:05:264
1744105993028,2cyclictest2113044-21kworker/u16:1+events_unbound10:05:264
1744105993028,2cyclictest2076948-21kworker/u16:0+events_unbound09:54:024
1744113992927,2cyclictest2284052-21kworker/u16:0+flush-8:011:28:055
1744105992927,2cyclictest2444014-21kworker/u16:1+events_unbound12:17:374
1744105992927,2cyclictest2358743-21kworker/u16:3+flush-8:012:33:214
1744105992927,2cyclictest1951666-21kworker/u16:2+events_unbound10:24:144
1744105992927,2cyclictest1874113-21kworker/u16:4+events_unbound09:39:544
1744105992926,2cyclictest2372553-21kworker/u16:4+events_unbound11:52:364
18538312280,1chrt1853832-21cat07:58:047
1744105992826,2cyclictest2176419-21kworker/u16:4+events_unbound10:29:054
1744105992826,2cyclictest2052245-21kworker/u16:1+events_unbound09:46:334
1744105992826,2cyclictest1991815-21kworker/u16:1+events_unbound09:12:174
1744122992725,1cyclictest1980707-21diskmemload12:13:017
1744113992724,2cyclictest1874113-21kworker/u16:4+flush-8:009:16:315
1744105992725,2cyclictest1724371-21kworker/u16:3+events_unbound08:12:294
18839792260,1chrt1883748-21latency_hist08:17:357
1744105992624,2cyclictest2284052-21kworker/u16:0+events_unbound11:09:014
1744105992624,2cyclictest1743879-21kworker/u16:2+events_unbound07:15:114
1744113992523,2cyclictest1724371-21kworker/u16:3+events_unbound07:37:495
1744113992522,2cyclictest1724371-21kworker/u16:3+events_unbound07:52:505
1744105992523,2cyclictest1724371-21kworker/u16:3+flush-8:007:19:304
1744105992523,2cyclictest1704188-21kworker/u16:1+events_unbound07:35:114
1744105992522,2cyclictest1724371-21kworker/u16:3+flush-8:007:42:454
1744122992423,0cyclictest0-21swapper/711:23:057
1744105992321,2cyclictest2284052-21kworker/u16:0+events_unbound11:18:494
1744105992321,2cyclictest1941764-21kworker/u16:0+events_unbound09:02:424
1744113992221,1cyclictest2372553-21kworker/u16:4+flush-8:011:57:345
1744113992220,2cyclictest2482566-21kworker/u16:2+flush-8:012:32:505
1744113992218,3cyclictest2139311-21kworker/u16:3+flush-8:010:32:535
1744105992220,2cyclictest1874113-21kworker/u16:4+events_unbound08:28:094
1744113992118,2cyclictest1796549-21kworker/u16:0+events_unbound07:42:505
1744122992018,1cyclictest1980707-21diskmemload10:23:057
1744113992018,2cyclictest1951666-21kworker/u16:2+events_unbound10:07:495
1744113992018,2cyclictest1913213-21kworker/u16:1+flush-8:008:37:535
1744105992018,2cyclictest1724371-21kworker/u16:3+events_unbound07:58:074
1744122991917,1cyclictest0-21swapper/709:07:497
1744122991916,1cyclictest0-21swapper/709:47:497
1744122991914,4cyclictest1980706-21latency_hist09:07:357
1744113991917,2cyclictest1704188-21kworker/u16:1+events_unbound08:03:045
1744113991917,2cyclictest1704188-21kworker/u16:1+events_unbound08:03:045
1744105991916,2cyclictest1724371-21kworker/u16:3+flush-8:007:52:454
1744122991816,1cyclictest1980707-21diskmemload10:42:487
1744122991815,2cyclictest2466886-21ssh12:22:587
174412299180,17cyclictest2454665-21ssh12:17:587
174412299180,17cyclictest0-21swapper/709:12:577
1744113991815,3cyclictest2284052-21kworker/u16:0+flush-8:011:32:505
1744105991816,2cyclictest1913213-21kworker/u16:1+events_unbound08:39:464
1744105991816,2cyclictest1874113-21kworker/u16:4+events_unbound08:48:074
1744105991816,2cyclictest1874113-21kworker/u16:4+events_unbound08:48:074
1744122991716,0cyclictest0-21swapper/711:57:507
1744122991714,2cyclictest1302-21snmpd11:36:567
174412299170,1cyclictest0-21swapper/707:52:587
174411399170,15cyclictest2458778-21df12:22:465
174412299168,6cyclictest648-21systemd-journal08:12:347
1744122991613,2cyclictest1302-21snmpd12:05:247
1744122991612,3cyclictest1302-21snmpd11:07:557
1744122991611,4cyclictest1776902-21latency_hist07:22:357
174411799160,14cyclictest0-21swapper/609:18:376
1744113991613,2cyclictest2142405-21grep10:12:515
1744105991614,2cyclictest1724371-21kworker/u16:3+flush-8:008:23:064
174412299152,11cyclictest1855369-21expr08:02:497
174412299152,11cyclictest1855369-21expr08:02:497
1744122991513,1cyclictest0-21swapper/709:33:047
174412299150,13cyclictest0-21swapper/709:52:597
174411799159,2cyclictest0-21swapper/609:22:586
1744117991511,1cyclictest0-21swapper/609:43:036
1744105991513,2cyclictest1724371-21kworker/u16:3+flush-8:008:05:454
1744105991513,2cyclictest1724371-21kworker/u16:3+flush-8:008:05:454
174412299149,4cyclictest2494456-21latency_hist12:37:347
174412299149,3cyclictest1302-21snmpd07:47:537
1744122991411,2cyclictest1302-21snmpd09:29:087
1744122991411,2cyclictest1082-21tuned10:34:587
1744122991411,2cyclictest0-21swapper/707:22:357
174412299140,1cyclictest0-21swapper/707:27:587
1744117991413,1cyclictest0-21swapper/612:12:406
1744117991413,1cyclictest0-21swapper/610:56:126
1744117991412,2cyclictest0-21swapper/610:24:216
1744117991411,1cyclictest0-21swapper/611:21:356
174411799140,9cyclictest2197832-21ldconfig10:33:026
174411799140,1cyclictest0-21swapper/611:50:036
174411799140,14cyclictest0-21swapper/611:15:176
174411799140,14cyclictest0-21swapper/610:22:216
1744113991412,2cyclictest2284052-21kworker/u16:0+events_unbound11:57:475
1744113991412,2cyclictest1951666-21kworker/u16:2+events_unbound11:18:025
174411399140,1cyclictest0-21swapper/510:23:065
174411399140,14cyclictest0-21swapper/511:22:525
1744105991411,2cyclictest1874113-21kworker/u16:4+events_unbound08:53:004
174412299139,3cyclictest1302-21snmpd11:42:507
174412299139,3cyclictest1302-21snmpd10:31:007
174412299139,3cyclictest1302-21snmpd08:40:557
174412299137,5cyclictest6050-21gmain11:05:447
1744122991313,0cyclictest0-21swapper/712:12:247
1744122991312,0cyclictest0-21swapper/709:59:107
1744122991312,0cyclictest0-21swapper/708:42:477
1744122991311,1cyclictest0-21swapper/710:08:017
1744117991312,1cyclictest0-21swapper/611:44:556
1744117991312,1cyclictest0-21swapper/611:00:186
1744117991312,1cyclictest0-21swapper/610:38:336
1744117991312,1cyclictest0-21swapper/609:59:176
1744117991312,1cyclictest0-21swapper/609:50:566
1744117991312,1cyclictest0-21swapper/609:35:106
1744117991312,1cyclictest0-21swapper/609:31:136
1744117991312,1cyclictest0-21swapper/609:10:256
1744117991311,2cyclictest2139311-21kworker/u16:3+events_unbound10:27:496
174411799130,13cyclictest0-21swapper/612:36:386
174411799130,13cyclictest0-21swapper/611:40:496
174411799130,13cyclictest0-21swapper/611:07:336
174411799130,13cyclictest0-21swapper/609:54:526
174411799130,10cyclictest2453260-21grep12:17:556
174411799130,0cyclictest0-21swapper/611:26:196
1744113991312,1cyclictest0-21swapper/512:03:135
1744113991312,1cyclictest0-21swapper/510:57:005
1744113991311,2cyclictest2139311-21kworker/u16:3+flush-8:010:48:015
1744113991311,2cyclictest1874113-21kworker/u16:4+events_unbound09:42:485
1744113991311,2cyclictest1704188-21kworker/u16:1+flush-8:007:07:555
1744113991310,2cyclictest1787838-21irqcore07:27:505
174411399130,1cyclictest0-21swapper/509:52:595
174411399130,13cyclictest0-21swapper/511:40:505
174411399130,13cyclictest0-21swapper/511:11:125
174410599139,3cyclictest1807173-21cat07:37:494
1744105991311,2cyclictest1724371-21kworker/u16:3+events_unbound08:21:344
1744105991311,2cyclictest1724371-21kworker/u16:3+events_unbound08:13:454
1744105991311,2cyclictest1724371-21kworker/u16:3+events_unbound07:50:434
174412299129,2cyclictest1302-21snmpd09:44:417
174412299129,2cyclictest1302-21snmpd07:36:237
174412299128,3cyclictest1302-21snmpd11:38:027
174412299128,3cyclictest1302-21snmpd11:21:567
174412299128,3cyclictest1302-21snmpd11:14:597
174412299128,3cyclictest1302-21snmpd08:31:367
174412299128,3cyclictest125-21kswapd010:37:597
174412299127,4cyclictest1767237-21latency_hist07:17:357
174412299126,6cyclictest6124-21gmain09:19:137
174412299120,2cyclictest2381296-21ssh11:47:597
174412299120,2cyclictest1825465-21munin-run07:47:357
174412299120,11cyclictest2248463-21ssh10:55:117
1744117991211,1cyclictest0-21swapper/612:03:226
1744117991211,1cyclictest0-21swapper/611:35:096
1744117991211,1cyclictest0-21swapper/610:14:166
1744117991211,1cyclictest0-21swapper/609:39:066
1744117991211,1cyclictest0-21swapper/607:37:236
1744117991211,1cyclictest0-21swapper/607:21:186
174411799120,12cyclictest0-21swapper/607:28:536
174411399129,2cyclictest1957972-21grep08:52:555
1744113991211,1cyclictest0-21swapper/512:16:565
1744113991211,1cyclictest0-21swapper/511:06:285
1744113991211,1cyclictest0-21swapper/510:40:365
1744113991211,1cyclictest0-21swapper/509:12:005
174411399120,12cyclictest0-21swapper/510:32:245
174410599127,4cyclictest1777865-21tune2fs07:22:484
1744105991211,1cyclictest0-21swapper/408:33:514
1744105991210,2cyclictest1941764-21kworker/u16:0+events_unbound08:45:254
1744105991210,2cyclictest1704188-21kworker/u16:1+events_unbound07:32:254
174410599120,12cyclictest0-21swapper/408:58:454
174412299118,2cyclictest1302-21snmpd10:47:497
174412299118,2cyclictest1302-21snmpd10:04:007
174412299118,2cyclictest1302-21snmpd10:04:007
174412299118,2cyclictest1302-21snmpd09:40:417
174412299118,2cyclictest0-21swapper/712:27:577
174412299117,2cyclictest1302-21snmpd08:17:457
174412299116,4cyclictest1302-21snmpd08:47:437
174412299116,4cyclictest1302-21snmpd08:47:437
174412299110,2cyclictest1980707-21diskmemload11:52:587
174412299110,1cyclictest2261546-21ssh11:01:387
174412299110,1cyclictest2151314-21ssh10:16:187
174412299110,10cyclictest1302-21snmpd08:53:257
1744117991110,1cyclictest0-21swapper/608:57:196
1744117991110,1cyclictest0-21swapper/608:14:456
1744117991110,1cyclictest0-21swapper/607:43:236
1744117991110,1cyclictest0-21swapper/607:11:136
174411799110,10cyclictest1754965-21kthreadcore07:12:366
174411799110,0cyclictest0-21swapper/608:23:076
174411399117,3cyclictest1864463-21kworker/u16:2+flush-8:008:13:015
1744113991110,1cyclictest0-21swapper/512:30:115
1744113991110,1cyclictest0-21swapper/510:06:425
1744113991110,1cyclictest0-21swapper/510:06:425
1744113991110,1cyclictest0-21swapper/508:33:515
1744113991110,1cyclictest0-21swapper/508:30:235
1744113991110,1cyclictest0-21swapper/507:52:045
1744113991110,1cyclictest0-21swapper/507:22:165
174411399110,1cyclictest0-21swapper/507:36:565
174411399110,11cyclictest0-21swapper/512:08:255
174411399110,11cyclictest0-21swapper/510:17:515
174411399110,11cyclictest0-21swapper/508:47:055
174411399110,11cyclictest0-21swapper/507:26:505
174411399110,0cyclictest0-21swapper/508:23:265
174412299107,2cyclictest1302-21snmpd08:25:517
174412299105,4cyclictest6233-21gvfs-afc-volume09:23:597
174412299104,5cyclictest1922527-21/usr/sbin/munin08:37:347
174412299100,1cyclictest0-21swapper/707:37:537
174411799109,1cyclictest0-21swapper/612:31:266
174411799109,1cyclictest0-21swapper/610:48:386
174411799109,1cyclictest0-21swapper/610:03:426
174411799109,1cyclictest0-21swapper/610:03:426
174411799109,1cyclictest0-21swapper/608:58:166
174411799109,1cyclictest0-21swapper/607:48:546
174411799109,1cyclictest0-21swapper/607:37:526
174411799106,3cyclictest2328020-21grep11:27:526
174411799100,9cyclictest2397480-21cstates11:57:466
174411799100,9cyclictest2217451-21cut10:42:536
174411799100,9cyclictest0-21swapper/607:52:526
174411799100,4cyclictest2283258-21grep11:07:576
174411399109,1cyclictest0-21swapper/511:46:025
174411399109,1cyclictest0-21swapper/509:40:425
174411399109,1cyclictest0-21swapper/509:20:505
174411399109,1cyclictest0-21swapper/509:06:385
174411399109,1cyclictest0-21swapper/508:12:055
174411399108,2cyclictest2372126-21kworker/u16:2+flush-8:011:47:495
174411399107,2cyclictest1760815-21kthreadcore07:12:545
17441229995,3cyclictest1410-21dockerd08:57:557
17441229994,4cyclictest1751429-21kthreadcore07:07:547
17441179998,1cyclictest0-21swapper/611:53:076
17441179998,1cyclictest0-21swapper/607:59:286
17441179996,2cyclictest1931893-21users08:38:056
17441179996,2cyclictest1913741-21diskstats08:32:496
17441179990,8cyclictest2129185-21cut10:07:506
17441179990,8cyclictest1993640-21cstates09:12:466
17441179990,8cyclictest1884136-21/usr/sbin/munin08:18:016
17441179990,8cyclictest0-21swapper/607:22:466
17441179990,3cyclictest1933098-21cat08:42:456
17441179990,2cyclictest1974379-21kthreadcore09:02:526
17441179990,2cyclictest1911925-21ntpq08:28:016
17441179990,2cyclictest1854959-21/usr/sbin/munin08:02:496
17441179990,2cyclictest1854959-21/usr/sbin/munin08:02:496
17441179990,1cyclictest1948477-21kthreadcore08:47:566
17441179990,1cyclictest1948477-21kthreadcore08:47:566
17441139998,1cyclictest0-21swapper/509:35:115
17441139998,1cyclictest0-21swapper/508:48:025
17441139998,1cyclictest0-21swapper/508:48:025
17441139994,4cyclictest2454842-21grep12:18:015
17441179986,2cyclictest86-21ksoftirqd/612:09:346
17441179980,8cyclictest0-21swapper/612:22:496
17441179980,2cyclictest1864670-21/usr/sbin/munin08:08:046
17441139987,1cyclictest0-21swapper/509:49:415
17441139987,1cyclictest0-21swapper/509:29:115
17441139984,3cyclictest2214376-21cat10:42:495
17441139983,4cyclictest2293063-21cut11:12:545
17441139983,4cyclictest2019555-21kthreadcore09:22:515
17441139983,4cyclictest1962418-21grep08:57:485
17441059986,2cyclictest1704188-21kworker/u16:1+events_unbound07:07:504
17441139972,4cyclictest1845893-21cut07:57:495
17441139970,6cyclictest1884486-21cat08:17:455
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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