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2026-08-19 - 05:07
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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 Wed Aug 19, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
239322295269,17sleep10-21swapper/119:07:151
239072288258,20sleep20-21swapper/219:06:562
239002267236,21sleep00-21swapper/019:06:500
238502267237,19sleep30-21swapper/319:06:133
268522670,0sleep20-21swapper/221:55:182
201812620,0sleep00-21swapper/020:10:000
247192610,1sleep024256-21cyclictest21:15:190
175762610,0sleep10-21swapper/100:05:181
307932570,0sleep10-21swapper/121:19:441
155092550,0sleep20-21swapper/200:04:192
163862540,0sleep00-21swapper/022:27:390
149622490,0sleep20-21swapper/222:26:332
181092190,0sleep20-21swapper/223:07:252
181092190,0sleep20-21swapper/223:07:252
215762170,0sleep20-21swapper/223:48:212
112302170,0sleep20-21swapper/200:20:212
300972130,0sleep10-21swapper/122:55:151
166272130,0sleep20-21swapper/221:30:142
131112130,0sleep20-21swapper/221:47:172
242739991,7cyclictest21659-21ssh00:26:423
242709994,3cyclictest275-21systemd-journal21:00:012
242669992,4cyclictest31215-21latency_hist20:35:001
23994290,0sleep10-21swapper/100:28:291
30672280,0sleep30-21swapper/321:19:383
30057280,0sleep00-21swapper/021:57:120
242739983,3cyclictest275-21systemd-journal00:16:483
242709981,4cyclictest31216-21idleruntime-cro20:35:002
242709980,7cyclictest12755-21rm23:23:582
242669984,1cyclictest27882-21idleruntime-cro22:35:011
242669982,5cyclictest275-21systemd-journal23:55:001
242669980,3cyclictest27700-21df19:15:141
242639987,1cyclictest12-21ksoftirqd/000:00:000
18429280,0sleep30-21swapper/323:45:583
242739976,1cyclictest12327-21ssh00:21:103
242739975,2cyclictest34-21ksoftirqd/320:40:003
242739974,2cyclictest30727-21snmpd23:13:023
242739974,2cyclictest275-21systemd-journal21:44:563
242739973,3cyclictest7943-21df23:40:123
242739973,3cyclictest275-21systemd-journal22:32:453
242739972,3cyclictest275-21systemd-journal19:25:403
242739970,1cyclictest14380-21diskmemload21:46:373
242709973,3cyclictest30727-21snmpd23:16:472
242709973,3cyclictest29842-21cron23:15:012
242709973,3cyclictest275-21systemd-journal20:41:432
242709973,3cyclictest24182-11brltty23:41:072
242709973,1cyclictest0-21swapper/222:05:442
242709972,4cyclictest15623-21ls20:00:002
242669973,3cyclictest31737-21apt21:20:151
242669972,3cyclictest26447-21grep19:15:011
242669970,1cyclictest2787-21ssh23:17:441
242639974,2cyclictest501-21in:imuxsock19:35:210
242639974,2cyclictest275-21systemd-journal23:05:010
242639973,3cyclictest30727-21snmpd22:16:250
242639973,3cyclictest30727-21snmpd20:18:040
242639973,3cyclictest1286-21awk20:40:130
242639973,1cyclictest0-21swapper/022:06:540
242639973,1cyclictest0-21swapper/022:02:290
22765270,0sleep20-21swapper/222:50:232
1754270,0sleep30-21swapper/323:35:573
6883260,0sleep10-21swapper/122:02:501
27626260,0sleep20-21swapper/221:36:272
242739966,0cyclictest0-21swapper/322:38:493
242739966,0cyclictest0-21swapper/322:16:343
242739966,0cyclictest0-21swapper/300:06:083
242739963,2cyclictest6500-21head23:00:203
242739963,2cyclictest6088-21ssh22:02:143
242739963,2cyclictest504-21dbus-daemon21:39:043
242739963,2cyclictest30727-21snmpd21:20:113
242739963,2cyclictest30375-21tune2fs19:20:153
242739963,2cyclictest28274-21ssh00:30:223
242739963,2cyclictest21955-21ssh22:11:353
242739963,2cyclictest20887-21ssh21:13:353
242739963,2cyclictest15020-21cat23:05:193
242739963,2cyclictest15020-21cat23:05:193
242739963,1cyclictest0-21swapper/323:50:433
242739962,3cyclictest6939-21cat23:20:133
242739962,3cyclictest6847-21fschecks_count19:40:173
242739962,3cyclictest30727-21snmpd23:31:213
242739962,3cyclictest30727-21snmpd23:15:473
242739962,3cyclictest30727-21snmpd22:26:193
242739962,3cyclictest30727-21snmpd22:20:073
242739962,3cyclictest30727-21snmpd21:51:133
242739962,3cyclictest30727-21snmpd21:05:203
242739962,3cyclictest30727-21snmpd21:00:443
242739962,3cyclictest30727-21snmpd20:50:583
242739962,3cyclictest25990-21cat00:10:173
242739962,3cyclictest25364-21cut20:20:143
242739962,3cyclictest14887-21apt-get23:25:113
242739962,3cyclictest11675-21cat22:05:203
242739962,3cyclictest1123-21cat23:55:163
242739961,4cyclictest0-21swapper/321:27:453
242739960,6cyclictest0-21swapper/322:53:083
242739960,6cyclictest0-21swapper/300:02:463
242739960,5cyclictest27440-21sed21:55:223
242739960,5cyclictest22529-21/usr/sbin/munin20:15:153
242739960,4cyclictest17808-21sh22:47:573
242739960,4cyclictest0-21swapper/321:30:093
242739960,2cyclictest4460-21expr22:40:133
242739960,0cyclictest0-21swapper/300:35:443
242709966,0cyclictest0-21swapper/222:57:232
242709966,0cyclictest0-21swapper/219:50:202
242709963,2cyclictest7287-21ssh23:00:322
242709963,2cyclictest663-21runrttasks19:42:062
242709963,2cyclictest4140-21ssh22:40:062
242709963,2cyclictest32531-21sh00:33:372
242709963,2cyclictest32466-21cat21:20:192
242709963,2cyclictest31062-21sh23:54:122
242709963,2cyclictest30727-21snmpd00:35:522
242709963,2cyclictest30727-21snmpd00:12:422
242709963,2cyclictest30472-21sh22:16:412
242709963,2cyclictest275-21systemd-journal19:24:302
242709963,2cyclictest10329-21tr21:00:132
242709962,3cyclictest9960-21seq21:25:482
242709962,3cyclictest30727-21snmpd23:57:482
242709962,3cyclictest30727-21snmpd23:26:572
242709962,3cyclictest30727-21snmpd21:50:492
242709962,3cyclictest30727-21snmpd21:15:142
242709962,3cyclictest30727-21snmpd19:48:452
242709962,3cyclictest30727-21snmpd19:30:532
242709962,3cyclictest21006-21cat20:10:172
242709962,3cyclictest20704-21cat22:30:152
242709962,3cyclictest17717-21cat00:05:192
242709962,2cyclictest4349-21ntp_kernel_pll_22:20:192
242709960,6cyclictest0-21swapper/223:36:502
242709960,6cyclictest0-21swapper/222:47:532
242709960,6cyclictest0-21swapper/222:36:062
242709960,6cyclictest0-21swapper/222:11:412
242709960,6cyclictest0-21swapper/221:40:312
242709960,2cyclictest19313-21head00:25:192
242669966,0cyclictest0-21swapper/123:42:381
242669966,0cyclictest0-21swapper/123:35:101
242669966,0cyclictest0-21swapper/122:25:031
242669966,0cyclictest0-21swapper/121:49:271
242669966,0cyclictest0-21swapper/100:02:361
242669964,1cyclictest7186-21tail23:20:141
242669963,2cyclictest586-21df_inode23:55:141
242669963,2cyclictest4824-21sshd00:16:491
242669963,2cyclictest30727-21snmpd21:30:081
242669963,2cyclictest30727-21snmpd20:28:161
242669963,2cyclictest22267-21sendmail_mailqu22:50:201
242669963,2cyclictest20091-21ssh23:27:581
242669963,2cyclictest19576-21sh23:46:491
242669963,2cyclictest13198-21sshd00:21:501
242669963,2cyclictest11865-21grep22:05:211
242669963,2cyclictest10043-21ssh21:25:511
242669962,3cyclictest30727-21snmpd22:37:051
242669962,3cyclictest30727-21snmpd22:24:251
242669962,3cyclictest30727-21snmpd21:56:041
242669962,3cyclictest30727-21snmpd21:37:501
242669962,3cyclictest30727-21snmpd20:41:281
242669962,3cyclictest30727-21snmpd20:11:241
242669962,3cyclictest30727-21snmpd19:22:021
242669962,3cyclictest30727-21snmpd00:13:391
242669962,3cyclictest29824-21packagekitd19:25:061
242669962,3cyclictest23505-21cat23:30:141
242669962,3cyclictest16226-21grep21:10:191
242669962,3cyclictest12657-21ssh22:45:121
242669962,3cyclictest1-21systemd00:30:061
242669962,2cyclictest30727-21snmpd22:42:351
242669962,2cyclictest275-21systemd-journal00:38:241
242669960,6cyclictest0-21swapper/122:13:591
242669960,6cyclictest0-21swapper/120:50:221
242669960,3cyclictest15626-21sh20:00:001
242669960,2cyclictest18095-21/usr/sbin/munin20:05:211
242669960,0cyclictest0-21swapper/123:06:181
242669960,0cyclictest0-21swapper/123:06:181
242669960,0cyclictest0-21swapper/121:40:321
242639966,0cyclictest3976-21smartctl22:20:170
242639966,0cyclictest0-21swapper/023:16:200
242639966,0cyclictest0-21swapper/022:37:000
242639966,0cyclictest0-21swapper/000:16:210
242639965,1cyclictest12-21ksoftirqd/023:00:010
242639963,2cyclictest9193-21grep23:40:190
242639963,2cyclictest504-21dbus-daemon19:11:100
242639963,2cyclictest31722-21expr20:35:140
242639963,2cyclictest31645-21apt-get23:35:120
242639963,2cyclictest30727-21snmpd22:45:410
242639963,2cyclictest30727-21snmpd20:45:290
242639963,2cyclictest28942-21sshd19:15:520
242639963,2cyclictest275-21systemd-journal21:41:190
242639963,2cyclictest275-21systemd-journal19:41:160
242639963,2cyclictest24993-21ssh23:11:180
242639963,2cyclictest22463-21rm00:27:180
242639963,2cyclictest21535-21sensors_temp20:10:220
242639963,2cyclictest15890-21sh23:05:440
242639963,2cyclictest15890-21sh23:05:440
242639963,2cyclictest1347-21chrt19:26:200
242639962,3cyclictest6389-21cat20:50:150
242639962,3cyclictest3083-21hostname00:35:140
242639962,3cyclictest30727-21snmpd23:50:480
242639962,3cyclictest30727-21snmpd23:48:000
242639962,3cyclictest30727-21snmpd23:30:090
242639962,3cyclictest30727-21snmpd23:21:050
242639962,3cyclictest30727-21snmpd21:35:170
242639962,3cyclictest30727-21snmpd21:26:080
242639962,3cyclictest30727-21snmpd20:30:580
242639962,3cyclictest30727-21snmpd20:01:240
242639962,3cyclictest30727-21snmpd19:49:570
242639962,3cyclictest26759-21expr00:30:120
242639962,3cyclictest15490-21grep23:25:130
242639962,1cyclictest0-21swapper/022:52:400
242639962,1cyclictest0-21swapper/022:40:430
242639962,1cyclictest0-21swapper/022:12:270
242639962,1cyclictest0-21swapper/021:51:250
242639962,1cyclictest0-21swapper/000:20:010
242639962,1cyclictest0-21swapper/000:13:130
242639961,1cyclictest8610-21apt-get00:00:130
242639961,1cyclictest0-21swapper/022:30:120
242639960,6cyclictest0-21swapper/000:06:150
242639960,3cyclictest9776-21missed_timers21:45:190
242739952,2cyclictest7929-21taskset20:55:093
242739952,2cyclictest4504-21expr19:35:143
242739952,2cyclictest3884-21expr20:45:123
242739952,2cyclictest30727-21snmpd20:40:103
242739952,2cyclictest29186-21sh22:55:053
242739952,2cyclictest14717-21which19:55:203
242739952,2cyclictest11682-21gltestperf19:50:153
242739951,3cyclictest8866-21kagekitd19:45:013
242739951,3cyclictest30727-21snmpd20:00:303
242739951,3cyclictest30727-21snmpd19:30:083
242739951,3cyclictest30037-21memory20:30:173
242739951,3cyclictest27973-21/usr/sbin/munin20:25:173
242739951,3cyclictest26777-21munin-node19:15:013
242739951,3cyclictest25129-21cat19:10:163
242739951,3cyclictest21503-21which20:10:213
242739950,3cyclictest275-21systemd-journal20:05:023
242709953,2cyclictest24805-21apt-get20:20:122
242709953,1cyclictest23688-21wc20:15:202
242709953,1cyclictest1611-21sh22:00:022
242709952,2cyclictest668-21sshd20:36:062
242709952,2cyclictest30727-21snmpd20:50:132
242709952,2cyclictest30727-21snmpd19:35:082
242709952,2cyclictest30727-21snmpd19:25:112
242709952,2cyclictest26811-21wc19:15:032
242709952,2cyclictest25334-21needreboot19:10:182
242709952,2cyclictest23093-21ssh23:30:052
242709952,2cyclictest18456-21cat20:05:182
242709952,2cyclictest12725-21cat21:05:132
242709952,1cyclictest0-21swapper/200:15:062
242709951,3cyclictest30727-21snmpd20:45:012
242709950,4cyclictest16818-21ntpq20:00:182
242709950,3cyclictest14658-21ssh21:10:032
242669954,1cyclictest22878-21ssh23:10:171
242669953,1cyclictest11634-21grep21:00:211
242669952,3cyclictest0-21swapper/119:30:591
242669952,2cyclictest5932-21grep23:00:161
242669952,2cyclictest4748-21sh19:35:151
242669952,2cyclictest30727-21snmpd20:20:071
242669952,2cyclictest30727-21snmpd19:40:081
242669952,2cyclictest17324-21grep21:50:121
242669952,1cyclictest0-21swapper/122:15:221
242669951,3cyclictest9149-21cat19:45:151
242669951,3cyclictest8344-21diskstats20:55:141
242669951,3cyclictest3943-21fschecks_count20:45:131
242669951,3cyclictest30727-21snmpd20:35:071
242669951,3cyclictest16487-21hddtemp_smartct20:00:151
242669951,3cyclictest12425-21grep21:05:121
242669950,4cyclictest24100-21taskset20:15:221
242669950,4cyclictest11112-21/usr/sbin/munin19:50:141
242639952,2cyclictest674-21lldpd20:58:290
242639952,2cyclictest31512-21ssh21:20:060
242639952,2cyclictest30816-21ntp_kernel_pll_19:20:180
242639952,2cyclictest2119-21cstates19:30:140
242639952,2cyclictest20723-21cups-browsed19:50:060
242639952,2cyclictest14664-21ssh21:10:030
242639952,2cyclictest13789-21cut19:55:150
242639952,2cyclictest10294-21cat21:00:130
242639951,3cyclictest30727-21snmpd20:20:010
242639950,4cyclictest12904-21cut21:05:140
242639950,1cyclictest26999-21/usr/sbin/munin20:25:130
242639950,1cyclictest159662sh21:30:090
242709940,1cyclictest0-21swapper/220:25:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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