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2026-04-27 - 17:53
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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 all highest latencies:
System rackaslot8.osadl.org (updated Mon Apr 27, 2026 12:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237912323293,20sleep20-21swapper/207:08:262
238102274244,19sleep10-21swapper/107:08:411
239122267237,20sleep00-21swapper/007:09:520
236142260229,21sleep30-21swapper/307:06:103
306882700,0sleep20-21swapper/207:20:192
16002630,0sleep30-21swapper/312:16:353
78502620,0sleep00-21swapper/011:21:580
43642620,0sleep10-21swapper/111:39:571
184212600,0sleep20-21swapper/209:31:322
137562600,0sleep00-21swapper/010:08:070
52632580,0sleep10-21swapper/111:59:551
127992570,0sleep30-21swapper/312:04:223
254832560,1sleep30-21swapper/312:30:233
82032200,0sleep10-21swapper/111:22:151
139892180,0sleep10-21swapper/109:10:011
163902150,0sleep10-21swapper/109:50:141
290672140,0sleep20-21swapper/210:17:062
95392130,0sleep10-21swapper/111:42:291
238752130,0sleep20-21swapper/208:20:132
38142120,0sleep20-21swapper/211:58:482
129982120,0sleep20-21swapper/210:46:012
2404399102,2cyclictest29072-21apt07:20:010
240509997,1cyclictest28-21ksoftirqd/207:20:002
240459997,1cyclictest22-21ksoftirqd/107:15:011
4621280,0sleep10-21swapper/111:00:211
27080280,0sleep10-21swapper/111:53:061
240539980,7cyclictest19334-21ssh11:48:343
240459987,1cyclictest22-21ksoftirqd/110:15:011
240459987,1cyclictest22-21ksoftirqd/109:30:011
240459984,3cyclictest275-21systemd-journal10:54:491
240459983,3cyclictest275-21systemd-journal08:39:461
240459983,3cyclictest275-21systemd-journal08:02:361
28331270,0sleep00-21swapper/010:55:200
240539976,1cyclictest34-21ksoftirqd/309:10:003
240539974,2cyclictest13645-21diskmemload10:06:013
240539973,3cyclictest504-21dbus-daemon11:00:013
240539973,3cyclictest21665-11brltty07:19:143
240539972,3cyclictest275-21systemd-journal08:59:553
240539972,1cyclictest320512expr09:40:133
240539972,1cyclictest170782ssh11:27:383
240539972,1cyclictest170782ssh11:27:383
240539971,1cyclictest141rcu_preempt09:46:313
240539970,6cyclictest18981-21dump-pmu-power08:10:003
240539970,6cyclictest15586-21grep12:25:113
240509976,1cyclictest28-21ksoftirqd/211:10:012
240509975,1cyclictest28-21ksoftirqd/207:15:002
240509974,2cyclictest504-21dbus-daemon08:59:592
240509974,2cyclictest504-21dbus-daemon08:29:172
240509974,2cyclictest21665-11brltty09:56:022
240509973,3cyclictest658-21snmpd11:14:572
240509973,3cyclictest658-21snmpd10:01:372
240509973,3cyclictest275-21systemd-journal10:45:012
240509973,3cyclictest1090-21cron07:30:012
240509972,3cyclictest658-21snmpd10:58:122
240509971,2cyclictest28-21ksoftirqd/209:40:012
240509970,7cyclictest0-21swapper/211:52:292
240509970,3cyclictest201252ssh11:49:102
240459976,1cyclictest22-21ksoftirqd/107:40:011
240459974,2cyclictest3142-21ntpq10:40:181
240459974,2cyclictest275-21systemd-journal08:19:171
240459973,3cyclictest658-21snmpd08:14:551
240459973,3cyclictest504-21dbus-daemon10:20:011
240459973,3cyclictest504-21dbus-daemon09:18:051
240459973,3cyclictest32221-21diskstats09:40:131
240459973,3cyclictest275-21systemd-journal07:45:071
240459973,3cyclictest22640-21cat12:10:121
240459973,3cyclictest13632-21cron09:10:001
240459971,5cyclictest0-21swapper/110:45:121
240459971,5cyclictest0-21swapper/110:30:111
240439973,3cyclictest658-21snmpd09:42:330
240439973,3cyclictest275-21systemd-journal10:15:010
240439973,3cyclictest275-21systemd-journal09:20:000
240439973,3cyclictest13092-21grep07:55:150
3811260,0sleep10-21swapper/108:45:171
240539964,1cyclictest34-21ksoftirqd/308:30:003
240539963,2cyclictest9271-21sendmail_mailqu07:45:183
240539963,2cyclictest908-21dpkg10:20:013
240539963,2cyclictest7866-21ssh12:20:183
240539963,2cyclictest658-21snmpd10:35:023
240539963,2cyclictest3778-21cstates07:35:133
240539963,2cyclictest3593-21rm11:00:153
240539963,2cyclictest31730-21cpuspeed_turbos07:25:133
240539963,2cyclictest31596-21netstat08:35:153
240539963,2cyclictest3153-21ssh11:39:013
240539963,2cyclictest275-21systemd-journal08:24:173
240539963,2cyclictest24925-21cat07:10:153
240539963,2cyclictest24893-21hwlatdetect09:55:143
240539963,2cyclictest23649-21cstates09:35:133
240539963,2cyclictest23492-21kernelversion09:15:163
240539963,2cyclictest22213-21ssh11:11:003
240539963,2cyclictest20657-21chrt10:50:303
240539963,2cyclictest18954-21sh09:51:183
240539963,2cyclictest18326-21ssh09:11:593
240539963,2cyclictest1816-21sh11:57:153
240539963,2cyclictest16440-21rm10:10:013
240539963,2cyclictest11816-21sh11:05:143
240539963,1cyclictest0-21swapper/309:26:273
240539962,3cyclictest658-21snmpd12:38:263
240539962,3cyclictest658-21snmpd10:27:173
240539962,3cyclictest658-21snmpd08:45:023
240539962,3cyclictest658-21snmpd08:43:233
240539962,3cyclictest658-21snmpd07:51:493
240539962,3cyclictest658-21snmpd07:30:573
240539962,3cyclictest658-21snmpd07:30:573
240539962,3cyclictest504-21dbus-daemon08:15:003
240539962,3cyclictest28754-21cut11:15:153
240539962,3cyclictest275-21systemd-journal11:20:153
240539962,3cyclictest21665-11brltty08:34:433
240539962,3cyclictest11837-21cat10:45:193
240539962,1cyclictest0-21swapper/311:51:123
240539961,4cyclictest9610-21grep09:00:123
240539961,4cyclictest32742-21tr10:00:133
240539961,3cyclictest275-21systemd-journal07:40:303
240539960,5cyclictest5623-21sh11:40:143
240539960,5cyclictest24884-21ssh12:10:563
240539960,2cyclictest3164-21ntp_states10:40:183
240539960,2cyclictest15525-21diskstats09:30:123
240539960,2cyclictest14538-21df_inode12:05:133
240539960,1cyclictest0-21swapper/310:16:253
240539960,1cyclictest0-21swapper/309:22:583
240539960,0cyclictest0-21swapper/311:30:093
240509964,1cyclictest11236-21unixbench_multi10:25:222
240509963,2cyclictest981-21seq09:20:492
240509963,2cyclictest7260-21cat12:20:142
240509963,2cyclictest658-21snmpd11:37:192
240509963,2cyclictest658-21snmpd10:54:122
240509963,2cyclictest6513-21ssh12:39:252
240509963,2cyclictest6344-21rm11:01:372
240509963,2cyclictest3338-21awk07:35:012
240509963,2cyclictest3338-21awk07:35:012
240509963,2cyclictest29235-21sh12:14:172
240509963,2cyclictest28512-21sh11:15:122
240509963,2cyclictest27137-21grep10:35:162
240509963,2cyclictest23618-21sh09:54:532
240509963,2cyclictest19330-21rm12:27:152
240509963,2cyclictest18924-21ntpq10:30:162
240509963,2cyclictest16549-21ssh09:10:372
240509963,2cyclictest14626-21ssh11:25:462
240509963,2cyclictest14626-21ssh11:25:462
240509963,2cyclictest10858-21tune2fs07:50:142
240509962,3cyclictest9832-21df09:00:122
240509962,3cyclictest8683-21expr07:45:142
240509962,3cyclictest8680-21expr10:05:152
240509962,3cyclictest658-21snmpd12:30:022
240509962,3cyclictest658-21snmpd12:01:162
240509962,3cyclictest658-21snmpd09:06:562
240509962,3cyclictest658-21snmpd08:51:112
240509962,3cyclictest658-21snmpd08:42:322
240509962,3cyclictest275-21systemd-journal09:45:462
240509962,3cyclictest275-21systemd-journal08:39:432
240509962,3cyclictest21806-21expr08:15:142
240509962,1cyclictest0-21swapper/212:08:212
240509962,1cyclictest0-21swapper/211:30:022
240509961,4cyclictest32289-21uniq09:40:142
240509961,4cyclictest17883-21wc10:10:172
240509960,6cyclictest0-21swapper/209:29:562
240509960,6cyclictest0-21swapper/209:17:042
240509960,5cyclictest16348-21grep08:00:182
240509960,2cyclictest5904-21/usr/sbin/munin07:40:182
240509960,1cyclictest141rcu_preempt12:16:422
240459963,2cyclictest8639-21cat10:05:151
240459963,2cyclictest8084-21cat12:20:191
240459963,2cyclictest7147-21date08:55:011
240459963,2cyclictest674-21lldpd07:26:271
240459963,2cyclictest658-21snmpd12:25:261
240459963,2cyclictest658-21snmpd09:58:221
240459963,2cyclictest658-21snmpd09:20:361
240459963,2cyclictest658-21snmpd08:31:581
240459963,2cyclictest6232-21expr07:40:131
240459963,2cyclictest504-21dbus-daemon11:26:551
240459963,2cyclictest504-21dbus-daemon11:26:551
240459963,2cyclictest32007-21cat12:35:111
240459963,2cyclictest30268-21sh11:15:461
240459963,2cyclictest29716-21sshd10:56:021
240459963,2cyclictest28565-21ssh10:35:491
240459963,2cyclictest275-21systemd-journal12:30:221
240459963,2cyclictest11984-21if_enp4s011:05:151
240459963,2cyclictest10330-21if_err_enp4s010:25:171
240459963,2cyclictest10164-21cut09:00:151
240459962,3cyclictest658-21snmpd12:07:281
240459962,3cyclictest658-21snmpd09:47:011
240459962,3cyclictest658-21snmpd08:26:011
240459962,3cyclictest658-21snmpd08:22:371
240459962,3cyclictest16180-21uname09:30:161
240459961,1cyclictest141rcu_preempt12:00:121
240459960,6cyclictest0-21swapper/112:15:541
240459960,6cyclictest0-21swapper/110:21:381
240459960,6cyclictest0-21swapper/107:15:041
240459960,2cyclictest340-21cstates10:00:131
240459960,2cyclictest27497-21munin-run11:15:011
240459960,0cyclictest0-21swapper/109:36:081
240439966,0cyclictest0-21swapper/012:35:020
240439966,0cyclictest0-21swapper/010:17:110
240439966,0cyclictest0-21swapper/009:53:010
240439964,1cyclictest16176-21ntp_states09:30:160
240439963,2cyclictest7235-21sensors_temp12:00:190
240439963,2cyclictest504-21dbus-daemon10:51:290
240439963,2cyclictest504-21dbus-daemon09:35:100
240439963,2cyclictest329-21sh12:15:390
240439963,2cyclictest32059-21cron10:00:010
240439963,2cyclictest275-21systemd-journal11:13:350
240439963,2cyclictest24419-21sh12:10:350
240439963,2cyclictest20446-21ssh12:28:070
240439963,2cyclictest15683-21sort09:50:020
240439963,2cyclictest11637-21chrt10:25:360
240439963,1cyclictest0-21swapper/010:31:320
240439962,3cyclictest658-21snmpd12:05:430
240439962,3cyclictest658-21snmpd11:45:010
240439962,3cyclictest658-21snmpd11:00:120
240439962,3cyclictest658-21snmpd10:48:360
240439962,3cyclictest658-21snmpd10:03:590
240439962,3cyclictest658-21snmpd09:22:360
240439962,3cyclictest658-21snmpd09:03:200
240439962,3cyclictest658-21snmpd08:54:560
240439962,3cyclictest658-21snmpd08:47:020
240439962,3cyclictest658-21snmpd08:38:280
240439962,3cyclictest658-21snmpd08:25:010
240439962,3cyclictest658-21snmpd08:22:160
240439962,3cyclictest658-21snmpd07:29:510
240439962,3cyclictest504-21dbus-daemon09:25:590
240439962,3cyclictest504-21dbus-daemon07:40:010
240439962,3cyclictest275-21systemd-journal11:15:150
240439962,3cyclictest13699-21ls11:45:120
240439962,1cyclictest0-21swapper/012:23:430
240439961,3cyclictest275-21systemd-journal07:31:450
240439961,3cyclictest275-21systemd-journal07:31:450
240439960,6cyclictest0-21swapper/012:33:060
240439960,6cyclictest0-21swapper/011:30:190
240439960,6cyclictest0-21swapper/011:08:040
240439960,6cyclictest0-21swapper/010:35:200
21670260,0sleep30-21swapper/308:15:123
20123260,0sleep10-21swapper/111:49:101
18196260,0sleep30-21swapper/310:30:123
240539953,1cyclictest5169-21cstates08:50:153
240539950,3cyclictest275-21systemd-journal07:55:033
240539950,3cyclictest275-21systemd-journal07:20:023
240539950,2cyclictest15879-21proc_pri08:00:173
240509953,1cyclictest3793-21head08:45:182
240509953,1cyclictest13645-21diskmemload10:20:082
240509952,2cyclictest5053-21cpuspeed_turbos11:40:122
240509952,2cyclictest4344-21expr11:20:132
240509952,2cyclictest3794-21cstates07:35:132
240509952,2cyclictest17692-21cat08:05:142
240509952,2cyclictest14298-21taskset07:57:202
240509951,3cyclictest658-21snmpd08:30:012
240509951,3cyclictest504-21dbus-daemon08:14:172
240459955,0cyclictest0-21swapper/108:55:011
240459952,2cyclictest30300-21ntp_states07:20:171
240459952,2cyclictest17578-21gltestperf08:05:141
240459952,2cyclictest1488-21ntpq08:40:181
240459952,2cyclictest10577-21expr07:50:121
240459951,3cyclictest21438-21/usr/sbin/munin11:30:161
240459950,4cyclictest1795-21grep07:30:131
240459950,4cyclictest1795-21grep07:30:131
240459950,3cyclictest275-21systemd-journal07:55:121
240439953,1cyclictest8596-21grep07:45:130
240439953,1cyclictest8121-21netstat08:55:180
240439953,1cyclictest13974-21apt-config09:10:010
240439952,2cyclictest869-21expr08:40:140
240439952,2cyclictest658-21snmpd07:10:060
240439952,2cyclictest6137-21seq07:40:120
240439952,2cyclictest28767-21expr08:30:120
240439952,2cyclictest21810-21tr11:50:120
240439952,2cyclictest21647-21/usr/sbin/munin08:15:130
240439952,2cyclictest17004-21chrt08:05:090
240439952,2cyclictest14779-21sshd08:00:060
240439952,2cyclictest12094-21fschecks_count09:05:150
240439951,3cyclictest658-21snmpd11:25:120
240439951,3cyclictest658-21snmpd11:25:120
240439951,3cyclictest29770-21/usr/sbin/munin07:20:140
240439951,3cyclictest2480-21ls10:40:130
240439951,3cyclictest19673-21fschecks_count08:10:140
240439951,3cyclictest10704-21cat07:50:130
240439951,3cyclictest0-21swapper/011:55:420
240439950,4cyclictest377-21cron10:20:020
240439950,4cyclictest29322-21expr11:35:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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