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2026-08-31 - 09:49
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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 all highest latencies:
System rackcslot3.osadl.org (updated Mon Aug 31, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81760rcu_preempt19-21ksoftirqd/100:31:161
81750rcu_preempt19-21ksoftirqd/122:37:331
81740rcu_preempt0-21swapper/023:05:460
81720rcu_preempt10156-21diskmemload21:59:280
81690rcu_preempt20101-21sh21:38:360
81690rcu_preempt10156-21diskmemload23:49:040
81690rcu_preempt0-21swapper/022:52:120
81680rcu_preempt15478-21sh23:36:110
81680rcu_preempt0-21swapper/000:06:500
81670rcu_preempt9313-21sendmail00:30:210
81670rcu_preempt16564-21if_wlan019:35:390
81670rcu_preempt0-21swapper/119:15:351
81670rcu_preempt0-21swapper/100:11:301
81660rcu_preempt19383-21if_can022:40:420
81660rcu_preempt18717-21sh23:43:340
81660rcu_preempt0-21swapper/122:20:381
81660rcu_preempt0-21swapper/021:12:020
81660rcu_preempt0-21swapper/000:43:290
81650rcu_preempt0-21swapper/123:44:551
81650rcu_preempt0-21swapper/022:21:330
81650rcu_preempt0-21swapper/022:01:310
81640rcu_preempt0-21swapper/100:40:031
81640rcu_preempt0-21swapper/023:15:180
81640rcu_preempt0-21swapper/022:10:060
81630rcu_preempt8836-21ssh00:28:281
81630rcu_preempt6277-21/usr/sbin/munin22:15:361
81630rcu_preempt0-21swapper/023:30:130
81630rcu_preempt0-21swapper/022:49:580
81630rcu_preempt0-21swapper/022:25:360
81630rcu_preempt0-21swapper/022:15:490
81620rcu_preempt9225-21kworker/0:019:15:420
81620rcu_preempt21264-21ssh21:40:420
81620rcu_preempt18086-21munin-run21:35:220
81620rcu_preempt16754-21ssh00:44:341
81620rcu_preempt12680-21ssh21:24:411
81620rcu_preempt10447-21sendmail_mailtr00:30:470
81620rcu_preempt0-21swapper/122:10:061
81620rcu_preempt0-21swapper/022:40:210
81610rcu_preempt13577-21ssh23:33:241
81610rcu_preempt0-21swapper/123:56:551
81610rcu_preempt0-21swapper/123:37:591
81610rcu_preempt0-21swapper/121:51:051
81610rcu_preempt0-21swapper/121:41:221
81610rcu_preempt0-21swapper/120:55:401
81610rcu_preempt0-21swapper/021:48:350
146550610irq/30-eth0-tx-17044-21apache200:50:061
146550610irq/30-eth0-tx-17044-21apache200:50:061
81600rcu_preempt398-21ssh22:03:151
81600rcu_preempt19414-21ssh23:45:341
81600rcu_preempt12662-21ssh22:26:181
81600rcu_preempt0-21swapper/122:49:381
81600rcu_preempt0-21swapper/121:29:451
81600rcu_preempt0-21swapper/120:00:001
81600rcu_preempt0-21swapper/100:10:161
81600rcu_preempt0-21swapper/000:00:520
81590rcu_preempt8625-21ssh23:24:040
81590rcu_preempt6052-21ssh23:18:471
81590rcu_preempt4543-21ssh00:20:241
81590rcu_preempt28279-21ssh22:58:101
81590rcu_preempt28201-21ssh00:01:141
81590rcu_preempt25121-21ssh21:47:401
81590rcu_preempt25105-21grep23:55:440
81590rcu_preempt16507-21ssh21:30:461
81590rcu_preempt0-21swapper/123:01:451
81590rcu_preempt0-21swapper/122:55:091
81590rcu_preempt0-21swapper/122:30:341
81590rcu_preempt0-21swapper/121:05:451
81590rcu_preempt0-21swapper/120:45:421
81590rcu_preempt0-21swapper/119:43:521
81590rcu_preempt0-21swapper/119:36:011
81590rcu_preempt0-21swapper/119:25:321
81590rcu_preempt0-21swapper/100:15:541
81590rcu_preempt0-21swapper/000:23:080
81580rcu_preempt2999-21ssh23:11:341
81580rcu_preempt23994-21ssh23:54:270
81580rcu_preempt17324-21ssh00:45:350
81580rcu_preempt17324-21ssh00:45:350
81580rcu_preempt0-21swapper/123:26:491
81580rcu_preempt0-21swapper/123:05:511
81580rcu_preempt0-21swapper/122:10:361
81580rcu_preempt0-21swapper/121:55:491
81580rcu_preempt0-21swapper/121:37:491
81580rcu_preempt0-21swapper/120:35:341
81580rcu_preempt0-21swapper/021:26:180
81580rcu_preempt0-21swapper/021:05:420
81580rcu_preempt0-21swapper/000:39:160
81570rcu_preempt6388-21ssh23:20:130
81570rcu_preempt30220-21ssh23:01:030
81570rcu_preempt19786-21latency_hist19:50:220
81570rcu_preempt14036-21df22:30:370
81570rcu_preempt0-21swapper/122:42:191
81570rcu_preempt0-21swapper/121:16:331
81570rcu_preempt0-21swapper/120:35:021
81570rcu_preempt0-21swapper/120:01:041
81570rcu_preempt0-21swapper/119:30:501
81570rcu_preempt0-21swapper/021:20:230
81570rcu_preempt0-21swapper/019:30:430
81570rcu_preempt0-21swapper/000:12:360
12176995748cyclictest945-21usb-storage20:09:161
81560rcu_preempt28851-21/usr/sbin/munin23:00:220
81560rcu_preempt13257-21switchtime19:20:460
81560rcu_preempt0-21swapper/123:51:291
81560rcu_preempt0-21swapper/123:21:141
81560rcu_preempt0-21swapper/121:02:201
81560rcu_preempt0-21swapper/120:22:021
81560rcu_preempt0-21swapper/023:32:240
81560rcu_preempt0-21swapper/022:10:390
81550rcu_preempt407-21mii-tool20:40:400
81550rcu_preempt13225-21python19:20:461
81550rcu_preempt0-21swapper/120:51:451
81550rcu_preempt0-21swapper/119:49:581
81550rcu_preempt0-21swapper/020:15:400
12176995546cyclictest945-21usb-storage20:15:271
81540rcu_preempt0-21swapper/119:51:421
81540rcu_preempt0-21swapper/021:53:490
81540rcu_preempt0-21swapper/020:30:490
81540rcu_preempt0-21swapper/020:21:380
81540rcu_preempt0-21swapper/000:15:400
81530rcu_preempt8345-21memory21:10:401
81530rcu_preempt0-21swapper/020:55:520
81530rcu_preempt0-21swapper/020:35:220
81530rcu_preempt0-21swapper/019:52:070
81520rcu_preempt29843-21users20:25:471
81520rcu_preempt0-21swapper/020:46:340
81520rcu_preempt0-21swapper/020:06:410
81520rcu_preempt0-21swapper/019:25:460
81500rcu_preempt18334-21python19:40:460
81490rcu_preempt9172-21df21:15:360
81490rcu_preempt23540-21users20:00:470
81480rcu_preempt25128-21df20:10:360
12176994845cyclictest945-21usb-storage20:14:231
81470rcu_preempt3-21ksoftirqd/020:27:210
146250460irq/28-eth0-rx-5605-21if_err_eth021:00:390
12176994239cyclictest945-21usb-storage20:43:371
81380rcu_preempt21441-21df_inode19:55:360
146550350irq/30-eth0-tx-3546-21/usr/sbin/munin20:50:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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