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2025-12-25 - 23:37
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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 792 highest latencies:
System rackcslot3.osadl.org (updated Thu Dec 25, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81810rcu_preempt31489-21ssh10:50:421
81770rcu_preempt5427-21ssh11:00:471
81760rcu_preempt19-21ksoftirqd/112:36:411
81740rcu_preempt19-21ksoftirqd/109:11:391
81720rcu_preempt26543-21sshd09:47:570
81710rcu_preempt3457-21diskmemload09:23:571
81710rcu_preempt23397-21mailstats10:35:541
81700rcu_preempt0-21swapper/108:45:311
81690rcu_preempt18734-21uname08:00:511
81690rcu_preempt0-21swapper/112:20:561
81680rcu_preempt9171-21ssh10:12:571
81680rcu_preempt19-21ksoftirqd/112:13:031
81680rcu_preempt0-21swapper/112:05:551
81680rcu_preempt0-21swapper/111:45:431
81670rcu_preempt29852-21memory11:40:481
81670rcu_preempt0-21swapper/111:17:261
81670rcu_preempt0-21swapper/108:30:431
81670rcu_preempt0-21swapper/011:06:590
81670rcu_preempt0-21swapper/009:35:060
81660rcu_preempt15948-21diskstats09:30:471
81660rcu_preempt0-21swapper/112:00:541
81660rcu_preempt0-21swapper/111:54:431
81660rcu_preempt0-21swapper/111:20:521
81660rcu_preempt0-21swapper/107:35:561
81650rcu_preempt3859-21sh10:57:331
81650rcu_preempt23985-21tr11:30:531
81650rcu_preempt2326-21apt-get09:05:400
81650rcu_preempt0-21swapper/111:09:021
81650rcu_preempt0-21swapper/110:47:141
81650rcu_preempt0-21swapper/110:09:581
81650rcu_preempt0-21swapper/109:49:571
81650rcu_preempt0-21swapper/011:24:520
81650rcu_preempt0-21swapper/010:31:170
81640rcu_preempt4933-21ssh11:00:300
81640rcu_preempt29718-21latency_hist12:35:311
81640rcu_preempt29718-21latency_hist12:35:311
81640rcu_preempt14073-21mailstats07:40:520
81640rcu_preempt0-21swapper/009:44:280
81630rcu_preempt2747-21awk09:05:481
81630rcu_preempt1085-21ssh10:53:200
81630rcu_preempt0-21swapper/011:52:510
81630rcu_preempt0-21swapper/011:31:340
81630rcu_preempt0-21swapper/010:12:200
81620rcu_preempt864-21munin-run09:00:311
81620rcu_preempt29032-21ssh09:51:331
81620rcu_preempt0-21swapper/110:45:301
147850620irq/30-eth0-tx-41ktimersoftd/011:56:310
81610rcu_preempt11795-21munin-run07:35:311
81610rcu_preempt11152-21apt-get11:10:431
81610rcu_preempt0-21swapper/112:25:311
81610rcu_preempt0-21swapper/110:20:571
81610rcu_preempt0-21swapper/110:02:251
81610rcu_preempt0-21swapper/109:29:551
81610rcu_preempt0-21swapper/108:53:581
81610rcu_preempt0-21swapper/108:46:431
81610rcu_preempt0-21swapper/011:04:500
81600rcu_preempt8552-21sshd09:17:581
81600rcu_preempt4329-21apt-get07:05:401
81600rcu_preempt23089-21ssh09:41:361
81600rcu_preempt16871-21ssh10:25:480
81600rcu_preempt13506-21if_can007:40:461
81600rcu_preempt0-21swapper/110:16:181
81600rcu_preempt0-21swapper/109:38:291
81600rcu_preempt0-21swapper/108:10:511
81600rcu_preempt0-21swapper/012:02:580
81600rcu_preempt0-21swapper/010:46:440
81600rcu_preempt0-21swapper/010:06:520
81590rcu_preempt4597-21fw_conntrack07:05:450
81590rcu_preempt27585-21ssh11:36:271
81590rcu_preempt21932-21ssh11:27:271
81590rcu_preempt0-21swapper/109:59:301
81590rcu_preempt0-21swapper/108:15:461
81590rcu_preempt0-21swapper/107:10:421
81590rcu_preempt0-21swapper/009:51:140
81580rcu_preempt22126-21ssh10:35:121
81580rcu_preempt19118-21ssh12:16:071
81580rcu_preempt0-21swapper/110:25:451
81580rcu_preempt0-21swapper/109:00:511
81580rcu_preempt0-21swapper/108:35:431
81580rcu_preempt0-21swapper/108:25:541
81580rcu_preempt0-21swapper/012:10:540
81580rcu_preempt0-21swapper/009:13:170
81570rcu_preempt12177-21ssh10:17:540
81570rcu_preempt12116-21ssh09:24:300
81570rcu_preempt0-21swapper/111:58:071
81570rcu_preempt0-21swapper/108:05:501
81570rcu_preempt0-21swapper/010:22:120
81570rcu_preempt0-21swapper/009:38:230
81570rcu_preempt0-21swapper/008:45:490
81560rcu_preempt28032-21ssh10:44:500
81560rcu_preempt0-21swapper/108:20:541
81560rcu_preempt0-21swapper/012:18:190
81560rcu_preempt0-21swapper/011:48:440
81560rcu_preempt0-21swapper/009:57:520
81560rcu_preempt0-21swapper/008:41:180
81550rcu_preempt5485-21cyclictest07:50:111
81550rcu_preempt31627-21ssh12:37:280
81550rcu_preempt17950-21grep07:55:530
81550rcu_preempt0-21swapper/107:29:421
81550rcu_preempt0-21swapper/012:32:000
81550rcu_preempt0-21swapper/012:32:000
81550rcu_preempt0-21swapper/010:40:300
81550rcu_preempt0-21swapper/009:16:220
81550rcu_preempt0-21swapper/008:25:570
81540rcu_preempt3815-21ssh10:04:490
81540rcu_preempt27505-21ssh11:36:130
81540rcu_preempt22260-21ssh11:28:220
81540rcu_preempt13126-21ssh11:13:110
81540rcu_preempt0-21swapper/107:20:431
81540rcu_preempt0-21swapper/011:43:170
81540rcu_preempt0-21swapper/007:33:410
147850540irq/30-eth0-tx-41ktimersoftd/012:24:100
81530rcu_preempt16041-21ssh11:17:580
81530rcu_preempt0-21swapper/012:06:420
81530rcu_preempt0-21swapper/009:27:440
81530rcu_preempt0-21swapper/008:02:250
81530rcu_preempt0-21swapper/007:13:570
81520rcu_preempt0-21swapper/008:12:570
5487995249cyclictest945-21usb-storage08:06:240
81510rcu_preempt19-21ksoftirqd/107:55:491
81510rcu_preempt0-21swapper/107:50:571
81510rcu_preempt0-21swapper/012:26:430
81510rcu_preempt0-21swapper/009:02:380
81510rcu_preempt0-21swapper/008:50:350
81510rcu_preempt0-21swapper/008:37:230
81510rcu_preempt0-21swapper/008:30:570
81510rcu_preempt0-21swapper/008:18:240
81510rcu_preempt0-21swapper/007:25:330
81500rcu_preempt0-21swapper/008:23:520
81490rcu_preempt19-21ksoftirqd/107:15:551
81490rcu_preempt0-21swapper/007:53:570
81490rcu_preempt0-21swapper/007:23:090
81480rcu_preempt0-21swapper/008:57:150
81480rcu_preempt0-21swapper/007:16:510
81470rcu_preempt12200-21fw_forwarded_lo07:35:460
5487994744cyclictest945-21usb-storage07:45:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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