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2026-08-03 - 13:57
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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
Characteristics of the highest latencies:
System rack6slot5.osadl.org (updated Mon Aug 03, 2026 00:46:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4449998735253,4615cyclictest15350-21kworker/0:119:15:440
4449994485058,4388cyclictest15350-21kworker/0:119:12:230
325622751185,204sleep00-21swapper19:07:460
444995584,541cyclictest13106-21diskmemload00:12:120
444995454,528cyclictest32028-21ssh23:08:570
4449953427,436cyclictest9546-21python19:30:550
4449950654,392cyclictest23441-21ssh00:04:540
4449950653,439cyclictest32240-21ssh21:54:130
4449950429,414cyclictest13106-21diskmemload23:49:400
4449950425,417cyclictest30111-21ntp_states00:20:180
4449950329,404cyclictest24912-21fschecks_time22:51:260
4449950153,388cyclictest19785-21ssh21:25:250
4449950053,423cyclictest5190-21munin-node00:36:260
4449950032,406cyclictest13266-21mailstats21:10:140
4449949629,405cyclictest19182-21ssh22:39:060
4449949152,263cyclictest31540-21strings20:30:440
4449948762,248cyclictest2336-21runrttasks22:00:200
4449948356,367cyclictest13030-21df23:40:230
4449948353,360cyclictest20056-21awk23:55:530
4449948253,415cyclictest13106-21diskmemload23:38:180
4449948156,411cyclictest13106-21diskmemload23:01:520
4449948154,413cyclictest13106-21diskmemload00:42:430
4449948054,412cyclictest3177-21ssh23:16:250
4449947656,360cyclictest28896-21sh00:16:190
4449947653,408cyclictest4224-21lldpd20:25:380
4449947555,361cyclictest4305-21snmpd20:10:480
4449947456,359cyclictest13106-21diskmemload22:09:260
4449947455,359cyclictest13106-21diskmemload22:27:060
4449947255,357cyclictest28355-21runrttasks21:45:220
4449947255,356cyclictest8456-21strings20:55:460
4449947254,358cyclictest13-21rcuc/022:46:120
4449947155,355cyclictest18029-21strings23:51:070
4449946853,356cyclictest11907-21awk22:21:130
4449946853,354cyclictest19653-21runrttasks21:25:080
4449946850,357cyclictest344450irq/10-eth023:20:120
4449946655,229cyclictest7717-21ssh23:26:380
4449946432,432cyclictest0-21swapper21:34:180
4449946356,346cyclictest32659-21df_abs00:25:430
4449946255,345cyclictest13106-21diskmemload22:15:470
4449946154,234cyclictest4924-21runrttasks20:35:270
4449946054,347cyclictest27611-21ssh22:58:160
4449945953,223cyclictest17571-21chrt19:53:490
4449945855,344cyclictest10524-21ssh23:34:340
4449945829,415cyclictest5178-21head19:20:230
4449945552,333cyclictest763-21cat21:55:520
4449945456,339cyclictest4305-21snmpd22:43:200
4449945254,384cyclictest23232-21sshd20:09:550
444994513,435cyclictest25497-21ssh21:37:340
4449944752,381cyclictest16828-21apt-get21:17:030
4449944726,407cyclictest4239-21gltestperf20:45:270
4449944668,88cyclictest287432chrt20:24:350
4449944559,201cyclictest26208-21ntp_states21:40:190
4449944468,193cyclictest13-21rcuc/019:28:550
444994403,423cyclictest7666-21python22:11:160
444994393,376cyclictest13106-21diskmemload23:13:210
4449943564,359cyclictest23976-21ssh00:05:400
4449943564,186cyclictest13-21rcuc/019:46:060
4449943560,371cyclictest15433-21cpuspeed_turbos22:30:280
4449943560,314cyclictest17835-21munin-node19:55:130
4449943357,364cyclictest13-21rcuc/000:35:040
4449943326,393cyclictest5868-21munin-node20:50:140
444994271,249cyclictest21094-21runrttasks20:02:150
4449941451,349cyclictest2562-21awk20:40:320
4449940854,340cyclictest12157-21strings21:05:440
4449939955,321cyclictest12336-21seq19:40:110
4449938954,276cyclictest26596-21apt-get20:17:110
4449938754,321cyclictest10557-21awk19:35:180
4449937854,311cyclictest4305-21snmpd21:01:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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