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2026-04-30 - 14:25
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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 highest latencies:
System rackaslot8.osadl.org (updated Thu Apr 30, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
167842279232,19sleep20-21swapper/219:08:402
168032273248,16sleep10-21swapper/119:08:551
167822260228,21sleep00-21swapper/019:08:390
165502258212,37sleep30-21swapper/319:05:403
100632690,4sleep228-21ksoftirqd/222:55:442
245382630,0sleep30-21swapper/321:20:143
53792620,0sleep20-21swapper/223:58:182
130402610,0sleep10-21swapper/122:14:091
8182570,0sleep00-21swapper/022:28:070
195682570,0sleep00-21swapper/021:17:030
77622560,0sleep10-21swapper/121:49:401
136702230,0sleep20-21swapper/222:14:402
238852180,0sleep10-21swapper/100:31:561
168112180,0sleep10-21swapper/100:05:381
168062180,0sleep20-21swapper/221:55:022
85152170,0sleep00-21swapper/023:38:340
61702170,0sleep30-21swapper/323:36:443
256762150,0sleep10-21swapper/122:44:261
42362140,0sleep00-21swapper/022:08:440
115542140,1chrt0-21swapper/222:35:012
114192140,0sleep20-21swapper/200:23:452
313822130,0sleep00-21swapper/022:48:410
172092130,0sleep10-21swapper/119:10:111
244932120,0sleep20-21swapper/200:10:192
1700899109,1cyclictest22-21ksoftirqd/100:00:011
170039997,1cyclictest12-21ksoftirqd/023:30:010
11476290,0sleep10-21swapper/120:05:211
31047280,0sleep00-21swapper/021:43:580
170129980,7cyclictest31083-21ssh00:37:232
170089983,3cyclictest275-21systemd-journal21:05:131
170089983,3cyclictest275-21systemd-journal20:27:581
170089981,3cyclictest275-21systemd-journal22:59:561
170089980,1cyclictest141rcu_preempt19:15:131
170039983,3cyclictest7787-21cups-browsed21:30:000
14344280,0sleep10-21swapper/121:53:081
13507280,0sleep30-21swapper/322:14:333
8524270,0sleep30-21swapper/300:21:303
170179973,3cyclictest275-21systemd-journal22:35:283
170179973,3cyclictest1-21systemd22:50:173
170179973,2cyclictest275-21systemd-journal23:43:503
170179972,3cyclictest658-21snmpd00:07:443
170129973,3cyclictest658-21snmpd19:16:142
170129973,2cyclictest275-21systemd-journal21:36:302
170129972,3cyclictest275-21systemd-journal22:50:342
170089974,2cyclictest16512-21grep23:00:141
170089973,3cyclictest7860-21diskstats21:10:131
170089973,3cyclictest275-21systemd-journal22:33:391
170089973,3cyclictest275-21systemd-journal00:24:551
170039973,3cyclictest275-21systemd-journal22:59:580
170039973,3cyclictest275-21systemd-journal22:43:440
170039973,3cyclictest275-21systemd-journal20:48:550
170039973,3cyclictest275-21systemd-journal00:33:540
170039972,3cyclictest275-21systemd-journal21:58:360
17945260,0sleep20-21swapper/220:20:202
170179966,0cyclictest0-21swapper/323:55:273
170179966,0cyclictest0-21swapper/322:45:493
170179966,0cyclictest0-21swapper/322:33:323
170179966,0cyclictest0-21swapper/322:07:133
170179966,0cyclictest0-21swapper/300:27:353
170179966,0cyclictest0-21swapper/300:10:013
170179963,2cyclictest663-21runrttasks20:48:063
170179963,2cyclictest658-21snmpd20:17:183
170179963,2cyclictest5104-21sh21:28:143
170179963,2cyclictest3679-21rm23:13:043
170179963,2cyclictest32438-21sendmail_mailst19:40:193
170179963,2cyclictest30489-21ssh22:04:093
170179963,2cyclictest3044-11brltty19:14:303
170179963,2cyclictest30139-21sh00:36:403
170179963,2cyclictest29053-21tail23:30:153
170179963,2cyclictest275-21systemd-journal20:12:283
170179963,2cyclictest20111-21sshd21:37:043
170179963,2cyclictest17560-21ssh21:55:273
170179963,2cyclictest15858-21rm21:54:183
170179963,2cyclictest14542-21sh00:04:003
170179963,2cyclictest11046-21ssh22:56:303
170179963,1cyclictest0-21swapper/322:16:393
170179963,1cyclictest0-21swapper/300:15:523
170179962,3cyclictest674-21lldpd00:33:263
170179962,3cyclictest658-21snmpd23:51:303
170179962,3cyclictest658-21snmpd23:48:303
170179962,3cyclictest658-21snmpd23:25:103
170179962,3cyclictest658-21snmpd23:01:273
170179962,3cyclictest658-21snmpd22:41:373
170179962,3cyclictest658-21snmpd21:30:263
170179962,3cyclictest658-21snmpd20:34:013
170179962,3cyclictest658-21snmpd19:32:053
170179962,3cyclictest658-21snmpd19:28:533
170179962,3cyclictest5364-21df_inode21:05:153
170179962,3cyclictest504-21dbus-daemon21:45:003
170179962,3cyclictest31280-21expr20:50:153
170179962,3cyclictest24335-21smartctl20:35:163
170179962,3cyclictest22056-21cat22:20:173
170179962,3cyclictest20247-21grep20:25:203
170179962,3cyclictest0-21swapper/319:19:463
170179962,2cyclictest275-21systemd-journal21:45:243
170179961,4cyclictest15586-21apt-get21:15:113
170179960,6cyclictest0-21swapper/323:23:213
170179960,6cyclictest0-21swapper/323:17:063
170179960,6cyclictest0-21swapper/323:06:533
170179960,6cyclictest0-21swapper/320:40:203
170179960,5cyclictest22810-21fschecks_time19:20:133
170179960,3cyclictest7792-21/usr/sbin/munin20:00:183
170179960,0cyclictest0-21swapper/322:26:353
170179960,0cyclictest0-21swapper/321:15:003
170129966,0cyclictest0-21swapper/221:25:532
170129963,2cyclictest8924-21uname21:30:152
170129963,2cyclictest8798-21ssh23:16:522
170129963,2cyclictest658-21snmpd21:10:532
170129963,2cyclictest29657-21ssh22:25:192
170129963,2cyclictest28-21ksoftirqd/221:00:002
170129963,2cyclictest23864-21cron21:44:562
170129963,1cyclictest0-21swapper/223:39:422
170129963,1cyclictest0-21swapper/222:18:202
170129962,3cyclictest7107-21users19:55:192
170129962,3cyclictest658-21snmpd23:49:062
170129962,3cyclictest658-21snmpd23:27:122
170129962,3cyclictest658-21snmpd23:11:392
170129962,3cyclictest658-21snmpd22:48:472
170129962,3cyclictest658-21snmpd22:35:282
170129962,3cyclictest658-21snmpd22:06:462
170129962,3cyclictest658-21snmpd20:47:062
170129962,3cyclictest658-21snmpd20:18:482
170129962,3cyclictest658-21snmpd20:05:332
170129962,3cyclictest658-21snmpd19:40:292
170129962,3cyclictest658-21snmpd19:23:112
170129962,3cyclictest658-21snmpd00:16:142
170129962,3cyclictest658-21snmpd00:00:592
170129962,3cyclictest275-21systemd-journal21:48:122
170129962,3cyclictest275-21systemd-journal00:07:112
170129962,3cyclictest19410-21cat22:40:152
170129962,3cyclictest11904-21ntpq23:40:162
170129961,3cyclictest275-21systemd-journal23:07:052
170129961,3cyclictest275-21systemd-journal23:00:052
170129961,3cyclictest275-21systemd-journal20:35:052
170129960,6cyclictest0-21swapper/222:21:282
170129960,3cyclictest32368-21munin-run20:55:002
170129960,2cyclictest17052-21awk21:15:182
170129960,0cyclictest0-21swapper/223:30:372
170129960,0cyclictest0-21swapper/221:57:332
170129960,0cyclictest0-21swapper/220:26:072
170089966,0cyclictest0-21swapper/123:27:561
170089966,0cyclictest0-21swapper/100:36:221
170089963,2cyclictest504-21dbus-daemon22:25:011
170089963,2cyclictest30914-21sh22:04:271
170089963,2cyclictest28452-21sh00:13:211
170089963,2cyclictest24022-21cat21:40:011
170089963,2cyclictest16525-21ssh23:43:261
170089963,2cyclictest1152-21sshd23:11:041
170089962,3cyclictest658-21snmpd23:46:461
170089962,3cyclictest658-21snmpd23:30:451
170089962,3cyclictest658-21snmpd22:05:031
170089962,3cyclictest658-21snmpd20:58:401
170089962,3cyclictest658-21snmpd20:52:461
170089962,3cyclictest658-21snmpd20:13:571
170089962,3cyclictest658-21snmpd00:26:071
170089962,3cyclictest658-21snmpd00:15:041
170089962,3cyclictest504-21dbus-daemon20:50:001
170089962,3cyclictest366-21cat21:25:151
170089962,3cyclictest275-21systemd-journal23:17:001
170089962,3cyclictest275-21systemd-journal22:45:241
170089962,3cyclictest275-21systemd-journal21:41:051
170089962,3cyclictest23546-21smart_sda19:20:181
170089962,3cyclictest17450-21cat20:20:151
170089961,4cyclictest504-11dbus-daemon22:39:291
170089961,2cyclictest6469-21ssh23:36:591
170089960,6cyclictest0-21swapper/123:23:211
170089960,6cyclictest0-21swapper/122:50:251
170089960,6cyclictest0-21swapper/121:55:201
170089960,6cyclictest0-21swapper/121:30:251
170089960,5cyclictest9143-21ntpq00:00:161
170089960,5cyclictest17342-21users21:15:181
170039966,0cyclictest0-21swapper/022:51:280
170039963,2cyclictest4865-21ntpq22:30:180
170039963,2cyclictest25596-21sshd20:39:060
170039963,2cyclictest22607-21ssh23:04:060
170039963,2cyclictest15108-21ssh22:15:360
170039963,2cyclictest12-21ksoftirqd/021:40:000
170039963,2cyclictest12-21ksoftirqd/019:15:000
170039963,2cyclictest12062-21ssh22:13:230
170039963,1cyclictest0-21swapper/023:48:590
170039963,1cyclictest0-21swapper/023:18:520
170039962,3cyclictest658-21snmpd23:59:290
170039962,3cyclictest658-21snmpd23:42:520
170039962,3cyclictest658-21snmpd21:52:060
170039962,3cyclictest658-21snmpd21:08:100
170039962,3cyclictest658-21snmpd21:00:390
170039962,3cyclictest658-21snmpd20:10:260
170039962,3cyclictest658-21snmpd20:09:510
170039962,3cyclictest658-21snmpd20:01:420
170039962,3cyclictest658-21snmpd19:52:480
170039962,3cyclictest658-21snmpd19:36:560
170039962,3cyclictest658-21snmpd19:10:170
170039962,3cyclictest658-21snmpd00:37:030
170039962,3cyclictest658-21snmpd00:09:130
170039962,3cyclictest31594-21cat23:10:140
170039962,3cyclictest26659-21cat20:40:160
170039962,3cyclictest24634-21cat22:00:160
170039962,3cyclictest23186-21expr00:10:110
170039962,3cyclictest22072-21cat22:20:170
170039962,3cyclictest17447-21cat20:20:150
170039962,3cyclictest13508-21cat23:20:130
170039962,3cyclictest1211-21cat21:45:170
170039962,1cyclictest0-21swapper/000:22:560
170039962,1cyclictest0-21swapper/000:17:540
170039961,4cyclictest28204-21ssh23:30:020
170039961,2cyclictest13440-21ssh21:33:190
170039960,6cyclictest0-21swapper/000:01:570
170039960,4cyclictest27963-21ssh23:50:460
170039960,2cyclictest650-21lldpd21:22:180
170039960,2cyclictest18973-21/usr/sbin/munin20:25:190
170179952,2cyclictest658-21snmpd19:35:053
170179952,2cyclictest5637-21cpuspeed19:55:113
170179952,2cyclictest3007-21expr21:00:133
170179952,2cyclictest10324-21cat20:05:133
170179951,3cyclictest3892-21grep19:50:123
170179950,4cyclictest568-21cat20:55:133
170179950,4cyclictest16746-21/usr/sbin/munin20:20:133
170179950,1cyclictest1081-21/usr/sbin/munin19:45:163
170129952,2cyclictest7792-21/usr/sbin/munin20:00:122
170129952,2cyclictest674-21lldpd22:00:202
170129952,2cyclictest658-21snmpd23:20:052
170129952,2cyclictest658-21snmpd21:00:042
170129952,2cyclictest658-21snmpd20:40:362
170129952,2cyclictest3734-21forks19:50:122
170129952,2cyclictest29399-21cat19:35:122
170129952,2cyclictest21621-21fschecks_count20:30:122
170129952,2cyclictest17928-21cut19:10:152
170129951,3cyclictest658-21snmpd00:25:352
170129951,3cyclictest504-11dbus-daemon20:12:292
170129951,3cyclictest27835-21sed19:30:192
170129951,3cyclictest25487-21ssh23:50:042
170129951,3cyclictest24944-21df19:25:142
170129951,3cyclictest24678-21ls21:20:142
170129951,3cyclictest20296-21/usr/sbin/munin00:30:112
170129950,3cyclictest275-21systemd-journal21:05:062
170129950,3cyclictest275-21systemd-journal19:45:052
170089955,0cyclictest0-21swapper/119:30:211
170089952,2cyclictest7871-21grep20:00:121
170089952,2cyclictest658-21snmpd23:05:111
170089952,2cyclictest658-21snmpd19:55:061
170089952,2cyclictest658-21snmpd19:40:061
170089952,2cyclictest658-21snmpd19:38:161
170089952,2cyclictest3380-21sshd21:00:151
170089952,2cyclictest29543-21ssh22:25:131
170089952,2cyclictest28823-21ssh23:51:281
170089952,2cyclictest25954-21sshd20:40:111
170089952,2cyclictest25230-21if_enp4s019:25:151
170089952,2cyclictest23857-21grep21:20:101
170089952,2cyclictest23145-21cron20:35:011
170089952,2cyclictest21558-21expr20:30:111
170089952,2cyclictest1654-21gltestperf19:45:141
170089952,2cyclictest15059-21sh22:15:331
170089952,2cyclictest14449-21sshd20:15:031
170089950,3cyclictest141rcu_preempt19:50:151
170039953,1cyclictest14979-21tune2fs20:15:120
170039952,2cyclictest658-21snmpd21:10:010
170039952,2cyclictest658-21snmpd19:20:130
170039952,2cyclictest6073-21head19:55:140
170039952,2cyclictest31568-21cat19:40:140
170039952,2cyclictest31165-21cat20:50:160
170039952,2cyclictest27140-21expr19:30:140
170039952,2cyclictest24779-21expr19:25:130
170039952,2cyclictest24012-21rm23:05:010
170039952,2cyclictest1849-21sed19:45:160
170039952,2cyclictest12006-21ssh22:35:130
170039951,3cyclictest275-21systemd-journal20:30:040
170039951,3cyclictest1019-21fw_packets20:55:140
170039951,3cyclictest0-21swapper/000:25:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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