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2026-08-31 - 14:34
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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 Mon Aug 31, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122012309278,20sleep20-21swapper/219:09:262
119652279249,20sleep10-21swapper/119:06:231
120682258227,20sleep00-21swapper/019:07:430
121442249218,20sleep30-21swapper/319:08:423
37352610,0sleep20-21swapper/221:49:342
135332610,0sleep20-21swapper/222:33:582
246282570,1sleep00-21swapper/020:45:200
136952560,0sleep10-21swapper/122:34:051
299152540,0sleep30-21swapper/321:00:013
256272180,0sleep10-21swapper/122:21:121
239642180,0sleep00-21swapper/023:18:370
146712180,2sleep334-21ksoftirqd/323:51:313
313982160,0sleep00-21swapper/000:01:250
6122150,0sleep00-21swapper/023:24:090
19892140,0sleep20-21swapper/200:03:402
261422130,0sleep20-21swapper/221:43:162
199182100,0sleep30-21swapper/322:37:283
5087290,0chrt0-21swapper/323:26:123
14400290,0sleep10-21swapper/122:53:471
123659990,8cyclictest27856-21ssh21:44:363
5751280,0sleep00-21swapper/023:07:400
27507280,0sleep10-21swapper/119:40:151
15754280,0sleep00-21swapper/000:11:300
123659987,1cyclictest34-21ksoftirqd/322:55:013
123659983,4cyclictest2034-21ntpq23:05:173
123659983,2cyclictest25287-1kworker/u9:022:15:203
123619985,2cyclictest30727-21snmpd21:50:472
123619984,3cyclictest15221-21snmpd00:20:032
123579980,7cyclictest29412-21smart_sda21:25:201
123539984,1cyclictest10940-21munin-plugin-st23:50:000
9750270,0sleep20-21swapper/222:50:202
1606270,0sleep30-21swapper/323:44:153
123659976,1cyclictest34-21ksoftirqd/321:40:003
123659974,2cyclictest13271-21awk00:10:163
123659973,3cyclictest30727-21snmpd23:03:003
123659972,4cyclictest4293-21expr21:30:133
123659970,6cyclictest0-21swapper/321:20:173
123619973,3cyclictest275-21systemd-journal22:18:202
123619973,3cyclictest275-21systemd-journal00:28:492
123619973,3cyclictest24981-21users20:45:222
123619973,1cyclictest0-21swapper/221:16:282
123579973,3cyclictest275-21systemd-journal20:46:151
123579972,4cyclictest26742-21latency_hist23:40:001
123579972,3cyclictest275-21systemd-journal23:27:021
123539973,3cyclictest275-21systemd-journal23:39:150
123539973,3cyclictest275-21systemd-journal22:57:110
123539973,3cyclictest275-21systemd-journal19:35:000
123539973,2cyclictest275-21systemd-journal21:56:440
123539970,1cyclictest1895-21diskmemload22:31:050
123659966,0cyclictest0-21swapper/323:23:213
123659966,0cyclictest0-21swapper/323:10:573
123659966,0cyclictest0-21swapper/322:21:023
123659963,2cyclictest504-21dbus-daemon21:13:373
123659963,2cyclictest30727-21snmpd22:40:153
123659963,2cyclictest29670-21sort00:20:143
123659963,2cyclictest22403-21tail00:15:213
123659963,2cyclictest22296-21cat00:35:143
123659963,2cyclictest20381-21grep23:55:143
123659963,2cyclictest19379-21chrt19:22:033
123659963,2cyclictest16083-21cat19:15:163
123659963,2cyclictest12422-21sh23:30:293
123659963,2cyclictest0-21swapper/322:06:103
123659963,2cyclictest0-21swapper/300:30:043
123659963,2cyclictest0-21swapper/300:08:193
123659962,3cyclictest774-21cat22:45:153
123659962,3cyclictest3934-21sed20:00:153
123659962,3cyclictest30727-21snmpd23:19:073
123659962,3cyclictest30727-21snmpd22:55:483
123659962,3cyclictest30727-21snmpd21:52:173
123659962,3cyclictest30727-21snmpd19:50:463
123659962,3cyclictest29112-21/usr/sbin/munin21:25:173
123659962,3cyclictest23555-21/usr/sbin/munin22:00:203
123659962,3cyclictest1813-21cat19:55:163
123659962,3cyclictest15193-21cat20:25:153
123659962,3cyclictest14666-21cut21:55:183
123659962,1cyclictest0-21swapper/323:36:033
123659962,1cyclictest0-21swapper/322:30:183
123659962,1cyclictest0-21swapper/300:03:413
123659961,3cyclictest16306-21rm21:18:033
123659960,6cyclictest0-21swapper/322:11:033
123659960,6cyclictest0-21swapper/320:06:193
123659960,5cyclictest24231-21memory20:45:163
123659960,2cyclictest12953-21diskstats19:10:143
123659960,0cyclictest0-21swapper/300:25:033
123619966,0cyclictest0-21swapper/200:35:292
123619963,2cyclictest9167-21ssh21:33:002
123619963,2cyclictest674-21lldpd20:25:482
123619963,2cyclictest3479-21rm23:05:552
123619963,2cyclictest31222-21sh22:05:182
123619963,2cyclictest28816-21awk20:55:182
123619963,2cyclictest27187-21ssh22:41:412
123619963,2cyclictest2632-21sh23:25:132
123619963,2cyclictest25907-21ssh23:00:162
123619963,2cyclictest23686-21sh00:16:182
123619963,2cyclictest22595-21ssh22:20:042
123619963,2cyclictest20007-21ssh22:37:322
123619963,2cyclictest15778-21rm00:11:312
123619963,2cyclictest1524-21rm22:26:102
123619963,2cyclictest14886-21ssh00:30:262
123619963,1cyclictest0-21swapper/223:35:302
123619963,1cyclictest0-21swapper/223:16:222
123619962,3cyclictest30727-21snmpd23:49:262
123619962,3cyclictest30727-21snmpd23:44:582
123619962,3cyclictest30727-21snmpd23:20:132
123619962,3cyclictest30727-21snmpd20:44:412
123619962,3cyclictest30727-21snmpd20:33:232
123619962,3cyclictest30727-21snmpd20:22:352
123619962,3cyclictest30727-21snmpd20:17:532
123619962,3cyclictest30727-21snmpd20:09:352
123619962,3cyclictest30727-21snmpd20:00:192
123619962,3cyclictest30727-21snmpd19:59:432
123619962,3cyclictest30727-21snmpd19:47:012
123619962,3cyclictest30727-21snmpd19:42:042
123619962,3cyclictest30727-21snmpd19:22:552
123619962,3cyclictest2627-21expr21:10:132
123619962,3cyclictest14971-21date21:55:202
123619960,6cyclictest0-21swapper/223:10:552
123619960,5cyclictest12543-21/usr/sbin/munin19:10:132
123619960,3cyclictest893-21sleep19:55:012
123619960,3cyclictest17153-21cstates22:55:142
123619960,2cyclictest32245-21/usr/sbin/munin22:45:112
123619960,1cyclictest275-21systemd-journal22:12:052
123619960,0cyclictest0-21swapper/223:56:302
123579966,0cyclictest0-21swapper/123:03:441
123579966,0cyclictest0-21swapper/121:55:401
123579966,0cyclictest0-21swapper/121:54:421
123579965,1cyclictest2764-21ssh22:07:491
123579964,1cyclictest22118-21wc21:40:191
123579963,2cyclictest6196-21ssh23:08:001
123579963,2cyclictest560-21gdbus19:15:011
123579963,2cyclictest504-21dbus-daemon21:35:431
123579963,2cyclictest504-21dbus-daemon20:25:071
123579963,2cyclictest31071-21ssh00:20:371
123579963,2cyclictest30727-21snmpd21:20:421
123579963,2cyclictest30727-21snmpd19:16:181
123579963,2cyclictest30613-21fw_packets21:00:131
123579963,2cyclictest30451-21timerwakeupswit21:45:201
123579963,2cyclictest29732-21basename22:05:001
123579963,2cyclictest275-21systemd-journal23:41:531
123579963,2cyclictest275-21systemd-journal00:09:551
123579963,2cyclictest26159-21sh23:20:061
123579963,2cyclictest10056-21sh21:33:401
123579963,2cyclictest0-21swapper/122:55:011
123579962,3cyclictest504-21dbus-daemon19:35:011
123579962,3cyclictest30727-21snmpd22:45:361
123579962,3cyclictest30727-21snmpd22:28:091
123579962,3cyclictest30727-21snmpd22:12:141
123579962,3cyclictest30727-21snmpd21:17:451
123579962,3cyclictest30727-21snmpd21:05:091
123579962,3cyclictest30727-21snmpd20:57:391
123579962,3cyclictest30727-21snmpd19:25:581
123579962,3cyclictest275-21systemd-journal00:01:081
123579962,3cyclictest21247-21sed00:35:011
123579962,3cyclictest18646-11brltty19:22:551
123579962,3cyclictest15221-21snmpd00:33:391
123579962,3cyclictest15221-21snmpd00:13:001
123579962,3cyclictest13963-21sshd20:21:251
123579962,1cyclictest0-21swapper/123:50:151
123579961,4cyclictest9534-21/usr/sbin/munin23:10:181
123579960,4cyclictest275-21systemd-journal23:56:571
123539965,1cyclictest0-21swapper/020:20:190
123539963,2cyclictest7108-21ssh22:49:360
123539963,2cyclictest560-21gdbus21:15:010
123539963,2cyclictest504-21dbus-daemon19:37:050
123539963,2cyclictest30727-21snmpd19:20:310
123539963,2cyclictest30727-21snmpd19:10:030
123539963,2cyclictest304-21systemd-udevd22:15:360
123539963,2cyclictest304-21systemd-udevd00:05:350
123539963,2cyclictest29916-21ntp_kernel_err21:45:160
123539963,2cyclictest26259-21sh22:40:580
123539963,2cyclictest23878-21ssh00:16:270
123539963,2cyclictest2064-21ssh23:25:060
123539963,2cyclictest1895-21diskmemload21:15:130
123539963,2cyclictest16355-21ntpq19:15:170
123539963,2cyclictest10328-21ssh21:33:530
123539963,1cyclictest0-21swapper/021:40:190
123539963,1cyclictest0-21swapper/000:39:050
123539962,3cyclictest32002-21cat19:50:140
123539962,3cyclictest31706-21expr22:25:150
123539962,3cyclictest30727-21snmpd23:50:470
123539962,3cyclictest30727-21snmpd22:01:230
123539962,3cyclictest30727-21snmpd21:23:090
123539962,3cyclictest30727-21snmpd20:37:350
123539962,3cyclictest30727-21snmpd20:11:230
123539962,3cyclictest30544-21unixbench-2d19:45:200
123539962,3cyclictest304-21systemd-udevd22:21:360
123539962,3cyclictest28704-21hddtemp_smartct21:25:160
123539962,3cyclictest28532-21cat20:55:160
123539962,3cyclictest27591-21cut19:40:160
123539962,3cyclictest15221-21snmpd23:57:290
123539962,3cyclictest13875-21cat21:35:200
123539962,1cyclictest0-21swapper/022:37:030
123539962,1cyclictest0-21swapper/000:25:120
123539961,4cyclictest27616-21turbostat20:55:000
123539960,6cyclictest0-21swapper/023:02:500
123539960,6cyclictest0-21swapper/021:04:280
123539960,5cyclictest28223-21awk23:40:160
123539960,2cyclictest31565-21smart_sda22:05:200
123539960,0cyclictest0-21swapper/022:50:190
123659953,1cyclictest28783-21sh21:45:083
123659952,2cyclictest3178-21cat23:45:133
123659952,2cyclictest30781-21cat21:00:143
123659952,2cyclictest30727-21snmpd20:35:023
123659952,2cyclictest30727-21snmpd19:35:103
123659952,2cyclictest29771-21cat19:45:153
123659952,2cyclictest23231-21/usr/sbin/munin19:30:193
123659952,2cyclictest22087-21grep20:40:163
123659952,2cyclictest16918-21cut20:30:133
123659952,2cyclictest13509-21swap20:20:203
123659951,3cyclictest32314-21/usr/sbin/munin21:05:203
123659951,3cyclictest30727-21snmpd20:10:053
123659951,3cyclictest0-21swapper/322:25:053
123659951,2cyclictest275-21systemd-journal20:15:163
123659951,2cyclictest275-21systemd-journal19:40:013
123659950,4cyclictest25628-21/usr/sbin/munin20:50:143
123659950,2cyclictest21057-21mailstats19:25:193
123619955,0cyclictest0-21swapper/220:35:082
123619952,2cyclictest8621-21sshd20:10:152
123619952,2cyclictest32327-21cat21:05:132
123619952,2cyclictest30763-21if_enp4s021:00:132
123619952,2cyclictest30727-21snmpd21:35:062
123619952,2cyclictest27840-21ssh21:25:042
123619952,2cyclictest25195-21head19:35:142
123619952,2cyclictest23031-21ntpq19:30:172
123619952,2cyclictest19890-21grep19:25:122
123619952,2cyclictest10665-21cut23:30:132
123619951,3cyclictest30727-21snmpd20:51:352
123619951,3cyclictest20151-21diskstats21:20:152
123619951,3cyclictest0-21swapper/222:00:092
123619951,1cyclictest0-21swapper/223:50:112
123619950,4cyclictest4271-21ssh00:05:122
123619950,4cyclictest16305-21cut19:15:172
123579955,0cyclictest0-21swapper/120:50:131
123579952,2cyclictest5455-21grep00:25:141
123579952,2cyclictest30727-21snmpd20:30:111
123579952,2cyclictest30727-21snmpd20:15:111
123579952,2cyclictest30727-21snmpd19:55:131
123579952,2cyclictest30727-21snmpd19:45:071
123579952,2cyclictest2911-21cut21:10:141
123579952,2cyclictest275-21systemd-journal19:50:011
123579952,2cyclictest22510-21forks19:30:141
123579952,2cyclictest22166-21ntp_states20:40:161
123579952,2cyclictest18064-21/usr/sbin/munin23:15:131
123579952,2cyclictest15591-21grep22:35:141
123579952,2cyclictest14584-21tr22:15:131
123579952,2cyclictest12339-21ssh23:30:261
123579952,2cyclictest0-21swapper/120:07:171
123579951,3cyclictest8485-21cat20:10:151
123579951,3cyclictest30727-21snmpd22:40:031
123579951,3cyclictest20767-21/usr/sbin/munin00:15:131
123579951,3cyclictest0-21swapper/123:45:031
123579950,4cyclictest18943-21/usr/sbin/munin20:35:191
123539953,1cyclictest28782-21sh00:20:040
123539953,1cyclictest11029-21sort23:30:140
123539952,2cyclictest5284-21entropy21:50:150
123539952,2cyclictest32690-21expr21:05:140
123539952,2cyclictest30727-21snmpd20:15:020
123539952,2cyclictest304-21systemd-udevd19:56:360
123539952,2cyclictest20266-21sh19:25:130
123539952,2cyclictest17380-21basename20:30:160
123539952,2cyclictest13520-21uniq00:30:150
123539951,3cyclictest5985-21df_inode20:05:130
123539951,3cyclictest3360-21/usr/sbin/munin20:00:140
123539951,3cyclictest21312-21cat20:40:120
123539951,3cyclictest14949-21fschecks_count20:25:140
123539951,3cyclictest0-21swapper/023:10:020
123539950,0cyclictest0-21swapper/022:10:230
123579940,3cyclictest3348-21seq20:00:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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