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2026-05-02 - 18:53
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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 the highest latencies:
System rackaslot8.osadl.org (updated Sat May 02, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320412285255,19sleep20-21swapper/207:08:572
320302268235,22sleep30-21swapper/307:08:493
318992268236,21sleep10-21swapper/107:07:071
318152267238,19sleep00-21swapper/007:06:010
209482690,0sleep20-21swapper/212:20:122
83292610,0sleep00-21swapper/010:55:180
285522610,0sleep30-21swapper/312:24:583
26672600,0sleep20-21swapper/210:14:232
197762600,0sleep00-21swapper/012:19:410
250752580,0sleep122-21ksoftirqd/110:27:111
191522550,0sleep10-21swapper/112:00:011
70502210,0sleep10-21swapper/110:55:111
104832210,0sleep10-21swapper/110:18:551
107792170,0sleep10-21swapper/109:21:521
159202160,0sleep00-21swapper/011:38:420
3482150,0sleep10-21swapper/110:31:391
58752140,0sleep20-21swapper/209:56:372
98052130,0sleep30-21swapper/310:18:243
3226699123,2cyclictest504-21dbus-daemon08:20:003
69942110,0sleep10-21swapper/112:11:231
3226699113,2cyclictest11849-21munin-plugin-st07:35:013
3226699111,3cyclictest275-21systemd-journal08:35:003
235592110,0sleep00-21swapper/012:21:100
58842100,0sleep00-21swapper/012:10:330
3226699103,2cyclictest27779-21rm11:06:513
3226699103,1cyclictest275-21systemd-journal09:49:563
3226699102,3cyclictest658-21snmpd11:24:373
3226699102,3cyclictest13321-21cat10:20:153
3226699102,2cyclictest24949-21rm09:10:593
3226699102,2cyclictest15014-21latency_hist11:00:003
3226699100,3cyclictest275-21systemd-journal12:15:353
3226699100,3cyclictest275-21systemd-journal09:15:143
3226699100,3cyclictest17355-21munin-run09:00:003
3226699100,2cyclictest275-21systemd-journal12:40:013
3226699100,2cyclictest275-21systemd-journal09:05:203
3225899105,3cyclictest30372-21dump-pmu-power09:15:011
3809290,0sleep30-21swapper/309:36:323
322669993,2cyclictest21542-21ssh12:00:383
322669993,1cyclictest8657-21unixbench_singl09:20:203
322669993,1cyclictest4148-21sh09:55:213
322669992,2cyclictest26681-21if_err_enp4s009:50:153
322669992,2cyclictest25059-21ssh10:27:113
322669992,2cyclictest22928-21ssh10:06:383
322669992,2cyclictest15172-21cat08:55:013
322669992,2cyclictest13155-21taskset10:00:413
322669992,1cyclictest0-21swapper/310:38:273
322669991,2cyclictest29787-21grep10:30:153
322669991,2cyclictest21823-21diskmemload12:30:123
322669990,4cyclictest15379-21ssh11:57:203
322669990,3cyclictest796-21ntp_states08:20:173
322669990,3cyclictest28489-21perl10:10:123
322669990,3cyclictest275-21systemd-journal10:47:283
322669990,3cyclictest18195-21head07:45:213
322669983,1cyclictest10952-21apt-get08:45:123
322669982,2cyclictest8411-21sed07:25:163
322669982,2cyclictest4792-21rm10:53:363
322669982,2cyclictest0-21swapper/311:25:033
322669982,2cyclictest0-21swapper/311:11:383
322669982,1cyclictest8859-21cat11:15:133
322669982,1cyclictest8859-21cat11:15:123
322669982,1cyclictest7548-21proc_pri08:35:183
322669982,1cyclictest2448-21expr07:15:023
322669981,3cyclictest658-21snmpd08:01:493
322669981,2cyclictest32538-21ssh12:07:313
322669980,3cyclictest5945-21ssh11:51:333
322669980,3cyclictest31593-21ssh12:25:403
322669980,3cyclictest275-21systemd-journal11:35:473
322669980,3cyclictest26999-21df_inode11:45:133
322669980,3cyclictest24146-21ssh09:30:033
322669980,3cyclictest23093-21ssh11:04:413
322669980,3cyclictest19365-21/usr/sbin/munin11:40:193
322669980,3cyclictest18931-21ssh10:42:343
322669980,3cyclictest17500-21sed09:25:213
322669980,3cyclictest1239-21ssh11:30:073
322669980,2cyclictest275-21systemd-journal09:40:203
322669980,2cyclictest275-21systemd-journal08:25:093
322669980,2cyclictest275-21systemd-journal07:39:593
322629984,3cyclictest275-21systemd-journal09:41:352
322589984,3cyclictest504-21dbus-daemon11:05:011
322589983,3cyclictest275-21systemd-journal08:53:281
322589980,7cyclictest14259-21ssh12:15:311
322589980,5cyclictest4024-21perf08:30:011
322539981,4cyclictest15135-21ls08:55:010
322669972,2cyclictest5268-21cat12:10:193
322669970,3cyclictest658-21snmpd07:43:453
322669970,3cyclictest15505-11brltty07:24:063
322629974,2cyclictest23725-11brltty10:04:562
322629973,3cyclictest30960-21ntpq08:15:162
322629973,3cyclictest275-21systemd-journal09:36:102
322629973,2cyclictest275-21systemd-journal09:25:172
322629973,1cyclictest0-21swapper/210:47:502
322629972,3cyclictest4887-21awk10:35:012
322629970,7cyclictest29913-21ssh09:14:422
322629970,7cyclictest0-21swapper/209:22:462
322589973,3cyclictest504-21dbus-daemon10:05:011
322539973,3cyclictest5463-21sed12:30:000
322539973,3cyclictest275-21systemd-journal11:57:400
322539973,3cyclictest275-21systemd-journal11:20:340
322539973,3cyclictest275-21systemd-journal09:14:250
322539973,3cyclictest275-21systemd-journal08:34:530
322539972,3cyclictest10694-21munin-run08:45:000
322539971,5cyclictest11325-21ls10:00:130
322669963,2cyclictest8785-21sshd08:40:133
322669962,3cyclictest658-21snmpd09:02:473
322669961,4cyclictest32444-21/usr/sbin/munin07:10:143
322669960,3cyclictest22223-21grep07:55:183
322629966,0cyclictest0-21swapper/212:35:352
322629966,0cyclictest0-21swapper/212:05:012
322629966,0cyclictest0-21swapper/211:31:352
322629966,0cyclictest0-21swapper/211:28:212
322629963,2cyclictest6960-21ssh10:16:162
322629963,2cyclictest658-21snmpd10:57:112
322629963,2cyclictest504-21dbus-daemon07:55:012
322629963,2cyclictest504-21dbus-daemon07:17:512
322629963,2cyclictest26975-21cat11:45:122
322629963,2cyclictest22991-21sshd10:25:362
322629963,2cyclictest21500-21ssh11:41:312
322629963,2cyclictest19367-21ssh10:05:092
322629963,2cyclictest19227-21ssh12:00:052
322629963,2cyclictest17725-21cat11:20:152
322629963,2cyclictest16924-21grep08:55:192
322629963,2cyclictest14215-21seq11:56:272
322629962,3cyclictest9788-21apt11:35:112
322629962,3cyclictest658-21snmpd12:33:122
322629962,3cyclictest658-21snmpd09:15:302
322629962,3cyclictest658-21snmpd09:01:022
322629962,3cyclictest658-21snmpd07:24:022
322629962,3cyclictest5601-21wc08:30:202
322629962,3cyclictest3296-21cat11:50:142
322629962,3cyclictest32540-21ls08:20:132
322629962,3cyclictest31835-21cat10:50:142
322629962,3cyclictest28-21ksoftirqd/207:59:432
322629962,3cyclictest26608-21which09:50:142
322629962,3cyclictest25120-21cat09:30:162
322629962,3cyclictest20100-21expr09:05:132
322629962,3cyclictest17395-21ls07:45:162
322629962,2cyclictest275-21systemd-journal11:01:182
322629962,1cyclictest51250irq/139-enp4s0-10:35:102
322629962,1cyclictest0-21swapper/212:19:002
322629960,6cyclictest0-21swapper/212:10:342
322629960,5cyclictest1-21systemd07:40:202
322629960,2cyclictest9158-21head11:15:152
322629960,2cyclictest9158-21head11:15:152
322629960,0cyclictest0-21swapper/209:47:552
322589966,0cyclictest0-21swapper/112:22:441
322589963,2cyclictest9546-21taskset07:29:301
322589963,2cyclictest504-21dbus-daemon11:27:381
322589963,2cyclictest504-21dbus-daemon08:40:581
322589963,2cyclictest501-21in:imuxsock11:55:381
322589963,2cyclictest501-21in:imuxsock07:43:471
322589963,2cyclictest3812-21ssh12:29:081
322589963,2cyclictest32216-21ssh12:07:181
322589963,2cyclictest29276-21sh10:49:001
322589963,2cyclictest19548-21ssh11:40:201
322589963,2cyclictest18121-21fschecks_time09:00:151
322589963,2cyclictest16330-21ssh12:35:391
322589963,2cyclictest11724-21rm12:33:311
322589963,2cyclictest0-21swapper/109:30:191
322589963,1cyclictest0-21swapper/109:40:531
322589962,3cyclictest658-21snmpd11:48:191
322589962,3cyclictest658-21snmpd11:38:131
322589962,3cyclictest658-21snmpd11:11:071
322589962,3cyclictest658-21snmpd10:35:441
322589962,3cyclictest658-21snmpd10:11:351
322589962,3cyclictest658-21snmpd09:50:551
322589962,3cyclictest658-21snmpd08:23:591
322589962,3cyclictest658-21snmpd08:16:161
322589962,3cyclictest658-21snmpd08:06:511
322589962,3cyclictest658-21snmpd07:58:571
322589962,3cyclictest658-21snmpd07:36:001
322589962,3cyclictest31872-21cut10:50:161
322589962,3cyclictest27769-21cat08:10:131
322589962,3cyclictest275-21systemd-journal09:56:111
322589962,3cyclictest20315-21grep07:50:191
322589962,3cyclictest18783-21date07:50:001
322589962,3cyclictest17255-21cat11:20:121
322589962,3cyclictest11623-21cat08:45:141
322589962,2cyclictest20484-21ntp_kernel_pll_10:05:181
322589960,6cyclictest0-21swapper/109:38:241
322589960,6cyclictest0-21swapper/109:29:311
322589960,0cyclictest0-21swapper/111:08:241
322539966,0cyclictest0-21swapper/011:52:190
322539966,0cyclictest0-21swapper/010:05:160
322539966,0cyclictest0-21swapper/009:19:460
322539964,2cyclictest22208-21grep10:45:010
322539964,1cyclictest24528-21uniq11:05:150
322539963,2cyclictest987-21ssh10:13:070
322539963,2cyclictest658-21snmpd08:03:490
322539963,2cyclictest339-21grep08:20:150
322539963,2cyclictest30172-21sshd10:30:160
322539963,2cyclictest2986-21cpuspeed_turbos07:15:120
322539963,2cyclictest29552-11brltty08:46:240
322539963,2cyclictest29092-21ssh09:32:330
322539963,2cyclictest275-21systemd-journal12:26:000
322539963,2cyclictest275-21systemd-journal11:28:530
322539963,2cyclictest26982-21ssh10:47:180
322539963,2cyclictest2426-21sh11:10:470
322539963,2cyclictest16811-21grep09:25:160
322539963,2cyclictest14608-21rm10:20:370
322539963,2cyclictest10701-21grep09:40:180
322539963,1cyclictest0-21swapper/009:24:380
322539962,3cyclictest658-21snmpd12:36:140
322539962,3cyclictest658-21snmpd10:38:020
322539962,3cyclictest658-21snmpd10:18:040
322539962,3cyclictest658-21snmpd09:07:030
322539962,3cyclictest658-21snmpd08:06:010
322539962,3cyclictest658-21snmpd07:50:270
322539962,3cyclictest658-21snmpd07:35:510
322539962,3cyclictest658-21snmpd07:20:120
322539962,3cyclictest31743-21hddtemp_smartct10:50:150
322539962,3cyclictest28601-21cat12:05:160
322539962,3cyclictest22506-21cat07:55:190
322539962,3cyclictest16573-21ntpq11:00:170
322539962,3cyclictest15422-21open_inodes07:40:180
322539962,1cyclictest141rcu_preempt09:45:120
322539962,1cyclictest0-21swapper/012:02:050
322539962,1cyclictest0-21swapper/010:26:080
322539961,1cyclictest1595-21apt-get09:55:020
322539960,6cyclictest0-21swapper/011:41:510
322539960,6cyclictest0-21swapper/008:10:010
322539960,3cyclictest17601-21/usr/sbin/munin09:00:150
322539960,0cyclictest0-21swapper/011:34:440
322539960,0cyclictest0-21swapper/011:15:150
322539960,0cyclictest0-21swapper/011:15:150
322669953,1cyclictest28375-21hddtemp_smartct08:10:153
322669950,3cyclictest275-21systemd-journal08:09:123
322669950,2cyclictest18876-21acpi07:50:123
322629955,0cyclictest0-21swapper/207:30:032
322629953,2cyclictest24003-21acpi11:05:132
322629953,1cyclictest663-21runrttasks07:26:192
322629952,2cyclictest8879-21cpuspeed_turbos08:40:132
322629952,2cyclictest7735-21cat08:35:192
322629952,2cyclictest658-21snmpd08:00:152
322629952,2cyclictest320-21expr11:10:132
322629952,2cyclictest30467-21ntpq12:25:172
322629952,2cyclictest13844-21cat08:50:142
322629952,2cyclictest12295-21ssh10:20:052
322629951,3cyclictest658-21snmpd07:36:512
322629951,3cyclictest32453-21/usr/sbin/munin07:10:132
322629951,3cyclictest27885-21cat08:10:132
322629951,3cyclictest2064-21sshd08:25:132
322629951,3cyclictest1-21systemd08:47:382
322629951,3cyclictest0-21swapper/210:40:132
322629950,3cyclictest275-21systemd-journal08:07:322
322589952,2cyclictest7757-21sort08:35:181
322589952,2cyclictest658-21snmpd09:45:341
322589952,2cyclictest658-21snmpd07:30:391
322589952,2cyclictest474-21tune2fs07:10:141
322589952,2cyclictest30781-21/usr/sbin/munin09:15:101
322589952,2cyclictest2877-21/usr/sbin/munin07:15:111
322589952,2cyclictest23543-21cat08:00:121
322589952,2cyclictest16424-21head08:55:171
322589952,2cyclictest14134-21acpi10:40:101
322589952,2cyclictest0-21swapper/111:50:101
322589951,3cyclictest658-21snmpd07:22:291
322589951,3cyclictest4953-21cat08:30:151
322589951,3cyclictest12362-21ssh10:20:091
322589951,1cyclictest0-21swapper/111:30:091
322589950,3cyclictest275-21systemd-journal11:15:091
322589950,3cyclictest275-21systemd-journal11:15:091
322589950,1cyclictest275-21systemd-journal09:05:151
322539953,1cyclictest9624-21latency_hist07:30:020
322539953,1cyclictest17040-21df07:45:130
322539953,1cyclictest10517-21basename07:30:160
322539952,2cyclictest658-21snmpd11:45:020
322539952,2cyclictest658-21snmpd09:50:080
322539952,2cyclictest658-21snmpd07:10:080
322539952,2cyclictest30400-21forks08:15:140
322539952,2cyclictest2733-21cat08:25:150
322539952,2cyclictest15492-21cpuspeed_turbos08:55:130
322539952,2cyclictest0-21swapper/009:35:000
322539951,3cyclictest6878-21/usr/sbin/munin08:35:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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