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2026-04-09 - 07:39
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackcslot3.osadl.org (updated Thu Apr 09, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81790rcu_preempt1599migration/000:32:530
81770rcu_preempt13856-21grep21:10:151
81740rcu_preempt32491-1kworker/1:1H22:06:081
81740rcu_preempt0-21swapper/123:20:241
81730rcu_preempt32172-21ps21:45:380
81720rcu_preempt0-21swapper/022:25:320
81720rcu_preempt0-21swapper/022:23:510
81710rcu_preempt0-21swapper/119:20:391
81700rcu_preempt31329-21apt-get21:45:261
81700rcu_preempt22753-21sh23:32:350
81700rcu_preempt15025-21diskmemload00:42:051
81700rcu_preempt0-21swapper/122:51:241
81700rcu_preempt0-21swapper/119:55:241
81700rcu_preempt0-21swapper/023:40:280
81700rcu_preempt0-21swapper/023:35:580
81700rcu_preempt0-21swapper/022:08:380
81700rcu_preempt0-21swapper/000:28:250
81700rcu_preempt0-21swapper/000:21:180
81690rcu_preempt17144-21ssh21:18:041
81690rcu_preempt0-21swapper/023:03:020
81690rcu_preempt0-21swapper/022:10:210
81680rcu_preempt2546-21/usr/sbin/munin20:25:350
81680rcu_preempt0-21swapper/119:10:391
81680rcu_preempt0-21swapper/020:35:320
81680rcu_preempt0-21swapper/020:10:330
81670rcu_preempt3-21ksoftirqd/000:44:320
81670rcu_preempt23895-21sh22:32:040
81670rcu_preempt22311-21latency_hist22:30:151
81670rcu_preempt2132-21ssh22:52:490
81670rcu_preempt12368-21ssh23:12:371
81670rcu_preempt0-21swapper/122:11:101
81670rcu_preempt0-21swapper/121:42:181
81670rcu_preempt0-21swapper/121:40:131
81660rcu_preempt28227-21ssh22:40:371
81660rcu_preempt0-21swapper/122:56:531
81660rcu_preempt0-21swapper/022:02:130
81650rcu_preempt4233-21sshd21:55:280
81650rcu_preempt3585-21timerwakeupswit20:25:401
81650rcu_preempt3-21ksoftirqd/023:19:270
81650rcu_preempt24770-21/usr/sbin/munin19:45:311
81640rcu_preempt8706-21ssh00:08:011
81640rcu_preempt6192-21ssh23:00:431
81640rcu_preempt22106-21munin-run19:35:140
81640rcu_preempt18109-21/usr/sbin/munin21:20:291
81640rcu_preempt0-21swapper/123:50:151
81640rcu_preempt0-21swapper/020:24:100
81640rcu_preempt0-21swapper/000:01:480
81630rcu_preempt23597-21latency_hist23:35:161
81630rcu_preempt23157-1kworker/0:2H23:50:570
81630rcu_preempt0-21swapper/122:15:331
81630rcu_preempt0-21swapper/021:32:580
81620rcu_preempt8028-21ssh22:00:571
81620rcu_preempt32209-21munin-run20:15:151
81620rcu_preempt18507-21ssh00:27:221
81620rcu_preempt18503-21ssh23:25:191
81620rcu_preempt13421-21ssh00:18:171
81620rcu_preempt0-21swapper/122:25:341
81620rcu_preempt0-21swapper/119:25:291
81620rcu_preempt0-21swapper/119:15:331
81620rcu_preempt0-21swapper/100:10:401
81610rcu_preempt31059-21ssh23:49:241
81610rcu_preempt2650-21timerwakeupswit21:50:420
81610rcu_preempt0-21swapper/123:16:191
81610rcu_preempt0-21swapper/122:22:581
81610rcu_preempt0-21swapper/120:05:011
81600rcu_preempt8226-21ssh23:05:271
81600rcu_preempt6586-21ssh00:04:521
81600rcu_preempt32093-21ssh22:48:390
81600rcu_preempt0-21swapper/123:39:391
81600rcu_preempt0-21swapper/121:30:351
81600rcu_preempt0-21swapper/121:25:261
81590rcu_preempt5627-21ssh21:56:351
81590rcu_preempt29907-21ssh21:40:550
81590rcu_preempt2914-21ssh21:51:271
81590rcu_preempt27526-21ssh23:40:481
81590rcu_preempt18290-21ssh23:25:080
81590rcu_preempt0-21swapper/123:56:471
81590rcu_preempt0-21swapper/122:47:161
81590rcu_preempt0-21swapper/120:30:331
81590rcu_preempt0-21swapper/120:07:221
81590rcu_preempt0-21swapper/100:35:451
81590rcu_preempt0-21swapper/100:21:231
147950590irq/31-eth0-tx-2138-21snmpd19:13:010
81580rcu_preempt26461-21ssh22:37:160
81580rcu_preempt21690-21ssh00:34:341
81580rcu_preempt15025-21diskmemload21:25:290
81580rcu_preempt0-21swapper/122:35:301
81580rcu_preempt0-21swapper/121:05:281
81580rcu_preempt0-21swapper/120:54:321
81580rcu_preempt0-21swapper/120:18:471
81580rcu_preempt0-21swapper/119:40:421
81580rcu_preempt0-21swapper/119:37:551
81580rcu_preempt0-21swapper/023:12:290
81570rcu_preempt9705-21ssh23:06:560
81570rcu_preempt29466-21ssh22:43:360
81570rcu_preempt28841-21ssh23:45:180
81570rcu_preempt16792-21ssh21:16:580
81570rcu_preempt0-21swapper/121:00:151
81570rcu_preempt0-21swapper/120:42:291
81570rcu_preempt0-21swapper/120:23:561
81570rcu_preempt0-21swapper/021:20:270
81570rcu_preempt0-21swapper/019:25:040
81570rcu_preempt0-21swapper/000:19:460
81560rcu_preempt5026-21ssh22:59:060
81560rcu_preempt3866-21ssh23:59:230
81560rcu_preempt0-21swapper/121:00:041
81560rcu_preempt0-21swapper/120:49:111
81560rcu_preempt0-21swapper/120:38:341
81560rcu_preempt0-21swapper/119:51:461
81560rcu_preempt0-21swapper/119:51:461
81560rcu_preempt0-21swapper/022:18:530
81560rcu_preempt0-21swapper/021:36:190
81560rcu_preempt0-21swapper/021:05:300
81560rcu_preempt0-21swapper/020:46:430
81560rcu_preempt0-21swapper/019:56:290
81550rcu_preempt21127-21df19:30:291
81550rcu_preempt0-21swapper/020:42:420
81550rcu_preempt0-21swapper/019:45:320
81550rcu_preempt0-21swapper/000:35:200
81540rcu_preempt8069-21ssh00:05:450
81540rcu_preempt32603-21fw_conntrack20:15:300
81540rcu_preempt20383-21ssh23:28:250
81540rcu_preempt0-21swapper/019:42:000
81530rcu_preempt11285-21ssh00:14:480
81530rcu_preempt0-21swapper/021:02:090
81530rcu_preempt0-21swapper/020:06:000
81520rcu_preempt0-21swapper/019:25:190
81510rcu_preempt0-21swapper/019:15:300
81500rcu_preempt27114-21users19:50:400
81500rcu_preempt27114-21users19:50:400
17059995047cyclictest2138-21snmpd20:33:520
81470rcu_preempt28794-21diskstats20:00:290
81450rcu_preempt2138-21snmpd21:12:110
81410rcu_preempt3-21ksoftirqd/019:35:270
147750380irq/29-eth0-rx-0-21swapper/020:50:370
89850360irq/17-ehci_hcd0-21swapper/020:58:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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