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2026-06-20 - 21:47
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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 all highest latencies:
System rack6slot5.osadl.org (updated Sat Jun 20, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146609985044266,4196cyclictest6128-21kworker/0:207:14:120
146609970523763,3285cyclictest6128-21kworker/0:207:15:490
142202772185,204sleep00-21swapper07:06:580
146609965758,530cyclictest31998-31updatedb.mlocat07:55:100
146609952828,438cyclictest4894-21runrttasks09:31:540
146609952828,438cyclictest392-21missed_timers09:21:280
146609952731,434cyclictest30972-21sed11:50:410
146609952529,433cyclictest12001-21munin-node11:05:110
146609951754,401cyclictest27331-19diskmemload10:41:240
146609951729,427cyclictest6571-21nscd11:26:320
146609951454,399cyclictest27331-21diskmemload09:52:440
146609951154,396cyclictest27331-21diskmemload11:00:160
146609950956,439cyclictest19787-21ssh11:24:400
146609950955,439cyclictest8185-21ssh12:12:480
146609950855,438cyclictest30087-21ssh11:48:270
146609950854,440cyclictest23647-21ssh11:32:430
146609950754,439cyclictest19024-21strings08:45:480
146609950654,439cyclictest22699-21ssh10:14:260
146609950654,390cyclictest27331-21diskmemload12:29:290
146609950653,439cyclictest18323-21ssh10:03:520
146609950553,391cyclictest21484-21sshd08:52:170
146609950453,390cyclictest29154-21ssh10:29:360
146609950354,388cyclictest24809-21ssh10:19:240
146609950331,401cyclictest25268-21awk10:20:270
146609950054,385cyclictest17185-21ssh11:16:490
146609949854,382cyclictest27331-21diskmemload11:57:380
146609949829,398cyclictest26877-21grep07:40:320
146609949554,381cyclictest17948-21chrt08:43:320
146609949253,262cyclictest21224-21latency_hist12:45:020
146609949155,422cyclictest4272-21snmpd12:07:160
146609948953,258cyclictest27331-21diskmemload12:03:260
146609948054,410cyclictest7172-21wc09:36:490
146609947855,361cyclictest4894-21runrttasks10:31:350
146609947654,361cyclictest10650-21seq12:19:590
146609947453,397cyclictest21915-21runrttasks08:55:120
146609947333,379cyclictest721-21kworker/u2:210:51:430
146609946333,359cyclictest24375-21chrt07:34:520
146609945667,375cyclictest24898-21df_inode07:35:310
146609945652,343cyclictest9680-21ssh09:43:230
146609945634,407cyclictest4117-21memory08:05:400
146609945527,413cyclictest4253-21lldpd10:35:150
146609945330,398cyclictest3674-21cut10:45:320
146609945153,384cyclictest27331-21diskmemload09:25:270
146609945051,331cyclictest31657-31copy07:54:220
146609944934,391cyclictest15084-21sshd11:11:160
146609944871,364cyclictest21608-21needreboot07:25:440
146609944770,363cyclictest26636-21missed_timers09:06:020
146609944428,392cyclictest27818-21rm11:42:280
146609944268,361cyclictest28393-21cpuspeed09:11:160
146609944054,277cyclictest4894-21runrttasks12:24:480
146609943927,397cyclictest7624-21kworker/u2:309:46:200
146609943854,256cyclictest31446-21ssh09:19:160
146609943827,395cyclictest18842-21ssh12:38:420
14660994381,423cyclictest8538-21apt-get08:17:120
146609943654,367cyclictest27331-21diskmemload09:56:400
146609943364,185cyclictest0-21swapper12:34:020
146609943273,345cyclictest345450irq/10-yenta11:36:020
146609943030,330cyclictest24052-21expr09:00:250
146609942854,361cyclictest8599-21strings10:56:080
146609942655,88cyclictest19784-21munin-node10:06:300
146609941761,356cyclictest0-21swapper07:46:120
146609941555,346cyclictest10427-21sshd08:22:160
146609940520,385cyclictest0-21swapper08:29:230
146609939455,324cyclictest15329-21strings08:35:470
146609939435,359cyclictest0-21swapper08:11:220
146609939432,337cyclictest1752-21tail08:00:260
146609938854,320cyclictest20028-21munin-node07:21:010
146609938428,294cyclictest4894-21runrttasks08:32:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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