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2026-04-17 - 17:33
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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 rackaslot8.osadl.org (updated Fri Apr 17, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21432322289,22sleep10-21swapper/107:05:551
23252293263,20sleep20-21swapper/207:08:162
22882263233,19sleep00-21swapper/007:07:470
23942259229,20sleep30-21swapper/307:08:533
272482630,0sleep30-21swapper/309:10:403
117572590,0sleep00-21swapper/011:00:110
3182570,0sleep00-21swapper/009:54:070
289092570,0sleep10-21swapper/109:11:591
191152570,0sleep20-21swapper/210:25:052
121742570,0sleep20-21swapper/211:39:522
109342570,0sleep20-21swapper/212:17:532
102682530,0sleep10-21swapper/111:18:501
313832210,0sleep30-21swapper/311:11:263
492290,0sleep00-21swapper/011:51:360
25829994,3cyclictest504-21dbus-daemon12:05:110
25949985,2cyclictest658-21snmpd11:29:263
25949985,2cyclictest658-21snmpd11:29:263
25949984,3cyclictest275-21systemd-journal08:45:003
25919986,1cyclictest24408-21ssh12:25:352
25869985,2cyclictest658-21snmpd11:25:531
25869985,2cyclictest658-21snmpd11:25:531
25869984,1cyclictest22-21ksoftirqd/108:00:001
25869983,4cyclictest909-21ssh09:15:121
25869981,4cyclictest999-21sh09:35:001
25829984,3cyclictest275-21systemd-journal08:39:280
23341280,0sleep30-21swapper/310:27:093
25949976,1cyclictest30822-21ssh11:30:343
25949975,1cyclictest5709-21ssh10:16:133
25949973,3cyclictest658-21snmpd08:04:093
25949973,3cyclictest12326-21ssh11:20:123
25949972,4cyclictest9738-21sshd07:23:263
25949971,4cyclictest275-21systemd-journal10:24:373
25919976,1cyclictest28-21ksoftirqd/211:55:002
25919975,1cyclictest28-21ksoftirqd/208:00:002
25919974,2cyclictest275-21systemd-journal11:02:222
25919974,2cyclictest275-21systemd-journal10:04:372
25919973,3cyclictest504-21dbus-daemon09:31:402
25919973,3cyclictest275-21systemd-journal08:37:482
25919972,3cyclictest275-21systemd-journal11:09:052
25919970,1cyclictest16891-21ssh11:22:332
25869974,2cyclictest275-21systemd-journal07:15:011
25869973,3cyclictest674-21lldpd10:39:361
25869973,3cyclictest17596-21ssh12:02:051
25869973,1cyclictest0-21swapper/109:48:121
25869970,4cyclictest22391-21munin-run09:05:001
25829974,2cyclictest12-21ksoftirqd/009:00:000
25829973,3cyclictest658-21snmpd12:31:040
25829973,3cyclictest560-21gdbus10:55:000
25829972,3cyclictest275-21systemd-journal07:43:270
9800260,0sleep00-21swapper/011:57:230
9632260,0sleep20-21swapper/212:36:342
25949966,0cyclictest0-21swapper/311:16:363
25949965,1cyclictest34-21ksoftirqd/311:00:013
25949963,2cyclictest5780-21expr11:55:113
25949963,2cyclictest25319-21ssh09:49:443
25949963,2cyclictest1999-21/usr/sbin/munin09:35:133
25949963,2cyclictest14076-21cat12:40:003
25949963,2cyclictest13142-1kworker/u9:210:46:253
25949963,2cyclictest12191-21rm11:39:523
25949963,2cyclictest0-21swapper/309:32:543
25949963,1cyclictest0-21swapper/311:03:183
25949963,1cyclictest0-21swapper/310:05:093
25949963,1cyclictest0-21swapper/309:29:113
25949962,3cyclictest658-21snmpd12:03:153
25949962,3cyclictest658-21snmpd09:06:033
25949962,3cyclictest658-21snmpd08:05:583
25949962,3cyclictest504-21dbus-daemon09:50:183
25949962,3cyclictest4961-21fschecks_count07:15:023
25949962,3cyclictest275-21systemd-journal09:41:403
25949962,3cyclictest27020-21expr10:10:123
25949962,3cyclictest2197-21chrt12:32:103
25949962,3cyclictest14416-21cat08:45:143
25949962,3cyclictest13683-21seq10:40:453
25949962,3cyclictest12365-21apt-get07:30:113
25949962,2cyclictest275-21systemd-journal10:33:583
25949962,1cyclictest0-21swapper/312:27:353
25949962,1cyclictest0-21swapper/312:21:083
25949962,1cyclictest0-21swapper/312:12:563
25949960,6cyclictest0-21swapper/310:37:383
25949960,6cyclictest0-21swapper/309:17:233
25949960,5cyclictest9508-21expr09:20:123
25949960,2cyclictest8402-21sed08:30:203
25949960,0cyclictest0-21swapper/312:06:243
25949960,0cyclictest0-21swapper/311:43:473
25919963,2cyclictest7258-21ssh10:37:092
25919963,2cyclictest4934-21sh10:15:382
25919963,2cyclictest3565-21/usr/sbin/munin10:55:132
25919963,2cyclictest32358-21ssh12:30:252
25919963,2cyclictest31429-21ssh12:10:182
25919963,2cyclictest275-21systemd-journal11:29:072
25919963,2cyclictest275-21systemd-journal11:29:072
25919963,2cyclictest275-21systemd-journal10:50:582
25919963,2cyclictest27464-21cat10:10:142
25919963,2cyclictest24893-21ssh10:08:562
25919963,2cyclictest23456-21ssh10:47:032
25919963,2cyclictest20852-21taskset07:47:152
25919963,2cyclictest0-21swapper/210:20:352
25919963,1cyclictest0-21swapper/210:40:052
25919963,1cyclictest0-21swapper/209:46:032
25919962,3cyclictest658-21snmpd09:57:242
25919962,3cyclictest658-21snmpd09:29:132
25919962,3cyclictest658-21snmpd09:19:042
25919962,3cyclictest658-21snmpd08:40:312
25919962,3cyclictest658-21snmpd08:20:512
25919962,3cyclictest658-21snmpd08:16:152
25919962,3cyclictest658-21snmpd08:09:542
25919962,3cyclictest658-21snmpd07:27:412
25919962,3cyclictest658-21snmpd07:16:072
25919962,3cyclictest32023-21ssh10:32:352
25919962,3cyclictest26496-21cat08:00:152
25919962,3cyclictest21348-21ntp_kernel_pll_09:00:162
25919962,3cyclictest14324-21cron07:35:012
25919962,3cyclictest1-21systemd07:15:012
25919962,3cyclictest0-21swapper/211:45:112
25919962,2cyclictest275-21systemd-journal11:13:292
25919962,1cyclictest13142-1kworker/u9:211:15:112
25919960,6cyclictest0-21swapper/212:09:492
25919960,6cyclictest0-21swapper/211:59:212
25919960,5cyclictest7043-21/usr/sbin/munin08:30:132
25869966,0cyclictest0-21swapper/112:37:411
25869964,1cyclictest17940-21idleruntime-cro08:55:001
25869963,2cyclictest51050irq/138-enp4s0-12:15:101
25869963,2cyclictest504-21dbus-daemon10:56:231
25869963,2cyclictest31682-21ssh11:50:351
25869963,2cyclictest29293-21ssh10:30:251
25869963,2cyclictest2714-21ssh10:15:081
25869963,2cyclictest2706-21rm09:35:171
25869963,2cyclictest21916-21awk12:05:111
25869963,2cyclictest17792-21sh11:42:501
25869963,1cyclictest0-21swapper/111:55:571
25869963,1cyclictest0-21swapper/111:02:211
25869962,3cyclictest9907-21cat09:20:151
25869962,3cyclictest7436-21expr08:30:141
25869962,3cyclictest671-21ntpd11:20:161
25869962,3cyclictest658-21snmpd12:21:191
25869962,3cyclictest658-21snmpd10:40:491
25869962,3cyclictest658-21snmpd10:09:421
25869962,3cyclictest658-21snmpd09:53:241
25869962,3cyclictest658-21snmpd07:53:381
25869962,3cyclictest658-21snmpd07:49:321
25869962,3cyclictest658-21snmpd07:19:251
25869962,3cyclictest2940-21expr08:20:131
25869962,3cyclictest29123-11brltty10:01:421
25869962,3cyclictest275-21systemd-journal11:34:091
25869962,3cyclictest10356-21expr07:25:141
25869962,1cyclictest0-21swapper/112:10:181
25869962,1cyclictest0-21swapper/109:25:301
25869961,3cyclictest275-21systemd-journal09:09:291
25869961,3cyclictest275-21systemd-journal08:10:371
25869960,6cyclictest0-21swapper/110:12:241
25869960,3cyclictest275-21systemd-journal07:39:421
25869960,3cyclictest11085-21sshd08:38:221
25869960,0cyclictest0-21swapper/111:39:281
25829963,2cyclictest8575-21ssh12:35:450
25829963,2cyclictest8133-21grep08:30:180
25829963,2cyclictest7614-21rm11:16:450
25829963,2cyclictest504-21dbus-daemon11:30:590
25829963,2cyclictest504-21dbus-daemon09:55:270
25829963,2cyclictest4787-21ssh10:15:300
25829963,2cyclictest275-21systemd-journal07:18:210
25829963,2cyclictest22389-21apt12:25:120
25829963,2cyclictest22257-21ssh10:26:180
25829963,2cyclictest21682-21sh10:45:400
25829963,2cyclictest20413-21df11:05:120
25829963,2cyclictest20344-21sh10:05:230
25829963,2cyclictest20331-21sh09:26:150
25829963,2cyclictest1751-21cat09:15:150
25829963,2cyclictest17449-21cron09:45:010
25829963,2cyclictest12478-21ssh10:00:420
25829963,2cyclictest1097-21sh11:13:060
25829963,1cyclictest0-21swapper/010:10:330
25829962,3cyclictest658-21snmpd12:22:340
25829962,3cyclictest658-21snmpd12:13:120
25829962,3cyclictest658-21snmpd09:37:400
25829962,3cyclictest658-21snmpd09:20:310
25829962,3cyclictest658-21snmpd08:53:570
25829962,3cyclictest658-21snmpd08:45:060
25829962,3cyclictest658-21snmpd08:42:120
25829962,3cyclictest658-21snmpd08:24:550
25829962,3cyclictest658-21snmpd08:17:220
25829962,3cyclictest658-21snmpd07:45:200
25829962,3cyclictest658-21snmpd07:35:290
25829962,3cyclictest658-21snmpd07:31:510
25829962,3cyclictest658-21snmpd07:10:130
25829962,3cyclictest275-21systemd-journal12:16:300
25829962,3cyclictest21678-21awk11:25:180
25829962,3cyclictest21678-21awk11:25:180
25829962,3cyclictest1-21systemd07:20:180
25829962,1cyclictest0-21swapper/010:20:250
25829962,1cyclictest0-21swapper/009:31:450
25829961,2cyclictest12-21ksoftirqd/011:40:200
25829960,6cyclictest0-21swapper/010:37:140
25829960,6cyclictest0-21swapper/009:46:360
25829960,6cyclictest0-21swapper/009:10:590
25829960,5cyclictest131rcuc/011:45:120
23113260,1sleep123112-21ssh11:45:191
25949953,1cyclictest5976-21expr07:15:133
25949952,2cyclictest658-21snmpd10:00:033
25949952,2cyclictest658-21snmpd08:50:043
25949952,2cyclictest5752-21sh12:15:023
25949952,2cyclictest5480-21basename08:25:143
25949952,2cyclictest31236-21cat08:10:153
25949952,2cyclictest30899-21/usr/sbin/munin11:50:183
25949952,2cyclictest28528-21ssh10:50:163
25949952,2cyclictest2824-21cat08:20:133
25949952,2cyclictest24713-21sendmail_mailqu07:55:203
25949952,2cyclictest21472-21cpuspeed_turbos07:50:123
25949952,2cyclictest21082-21ssh11:45:013
25949952,2cyclictest20803-21seq09:00:123
25949952,2cyclictest20132-21cat11:05:113
25949952,2cyclictest19798-21cat07:45:133
25949952,2cyclictest1807-21ssh09:55:033
25949952,2cyclictest14913-21cat07:35:123
25949952,2cyclictest10408-21cat07:25:143
25949951,3cyclictest396-21/usr/sbin/munin08:15:123
25949951,3cyclictest17945-21head07:40:183
25949950,4cyclictest18291-21cpuspeed_turbos08:55:143
25949950,4cyclictest10539-21grep08:35:193
25919953,1cyclictest9089-21sh09:20:092
25919953,1cyclictest663-21runrttasks08:25:432
25919952,2cyclictest658-21snmpd09:05:032
25919952,2cyclictest30888-21cat08:10:132
25919952,2cyclictest28166-21ssh09:11:242
25919952,2cyclictest26067-21sh09:50:082
25919952,2cyclictest18586-21forks08:55:142
25919952,2cyclictest18145-21grep07:40:192
25919952,2cyclictest14854-21expr07:35:122
25919952,2cyclictest13816-21cat08:45:122
25919952,2cyclictest10628-21cat09:40:152
25919952,2cyclictest0-21swapper/211:40:072
25919952,1cyclictest0-21swapper/211:30:142
25919951,3cyclictest7916-21apt-get07:20:112
25919951,3cyclictest14900-21cat12:20:132
25919951,3cyclictest14860-21wc12:00:162
25919951,3cyclictest1412-21rm09:35:112
25919950,3cyclictest23180-21sshd07:53:312
25869953,1cyclictest658-21snmpd07:20:041
25869953,1cyclictest27755-21/usr/sbin/munin10:50:201
25869953,1cyclictest22581-21sh12:25:131
25869952,2cyclictest690-21expr08:15:121
25869952,2cyclictest658-21snmpd11:10:061
25869952,2cyclictest5304-21fschecks_time08:25:131
25869952,2cyclictest501-21in:imuxsock10:20:031
25869952,2cyclictest3242-21head09:55:201
25869952,2cyclictest30301-21ssh12:30:011
25869952,2cyclictest29607-21taskset08:05:221
25869952,2cyclictest22-21ksoftirqd/110:45:151
25869952,2cyclictest18752-21cut08:55:151
25869952,2cyclictest14251-21gltestperf08:45:131
25869952,2cyclictest12201-21cat08:40:141
25869951,3cyclictest658-21snmpd07:40:031
25869951,3cyclictest504-11dbus-daemon07:30:311
25869951,3cyclictest20030-21cpu11:05:121
25869951,3cyclictest10422-21cat09:40:141
25869951,3cyclictest0-21swapper/110:25:081
25869950,4cyclictest25799-21/usr/sbin/munin08:00:201
25829953,1cyclictest21022-21sh09:00:140
25829952,3cyclictest25510-11brltty07:59:470
25829952,2cyclictest658-21snmpd10:40:070
25829952,2cyclictest658-21snmpd07:25:120
25829952,2cyclictest5399-21grep08:25:140
25829952,2cyclictest4828-21awk10:55:180
25829952,2cyclictest4420-21ssh11:35:020
25829952,2cyclictest22894-21cat09:05:120
25829952,2cyclictest21501-21grep07:50:120
25829951,3cyclictest658-21snmpd11:20:080
25829951,3cyclictest28806-21/usr/sbin/munin10:30:190
25829951,3cyclictest275-21systemd-journal08:05:120
25829950,4cyclictest13618-21ssh12:00:100
25829950,3cyclictest275-21systemd-journal08:13:340
25829950,3cyclictest25904-21systemd-udevd08:00:150
16069250,0sleep20-21swapper/208:50:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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