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2025-12-12 - 05:06
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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 376 highest latencies:
System rackcslot3.osadl.org (updated Fri Dec 12, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81730rcu_preempt0-21swapper/119:08:561
81720rcu_preempt14658-21munin-run21:59:401
81700rcu_preempt25625-21timerwakeupswit19:20:071
81680rcu_preempt11867-21ssh23:55:071
81680rcu_preempt0-21swapper/122:46:591
81680rcu_preempt0-21swapper/023:12:000
81680rcu_preempt0-21swapper/021:41:530
81670rcu_preempt0-21swapper/022:04:120
81670rcu_preempt0-21swapper/021:11:520
81660rcu_preempt5550-21open_files20:10:030
81660rcu_preempt1843-21ssh23:37:031
81660rcu_preempt17200-21sh00:05:491
81660rcu_preempt15758-21/usr/sbin/munin00:04:390
81660rcu_preempt0-21swapper/123:01:531
81650rcu_preempt7958-21ssh21:45:181
81650rcu_preempt19170-21sed23:09:401
81650rcu_preempt0-21swapper/100:28:471
81650rcu_preempt0-21swapper/022:55:110
81650rcu_preempt0-21swapper/022:30:080
81650rcu_preempt0-21swapper/022:08:360
81640rcu_preempt32150-21cpu19:49:541
81640rcu_preempt0-21swapper/122:06:391
81630rcu_preempt6074-21/usr/sbin/munin20:14:541
81630rcu_preempt17223-21ssh00:05:570
81630rcu_preempt0-21swapper/123:45:121
81630rcu_preempt0-21swapper/000:19:180
81620rcu_preempt0-21swapper/123:17:431
81620rcu_preempt0-21swapper/123:05:051
81620rcu_preempt0-21swapper/123:05:051
81620rcu_preempt0-21swapper/121:52:311
81620rcu_preempt0-21swapper/121:40:061
81620rcu_preempt0-21swapper/120:54:571
81620rcu_preempt0-21swapper/120:09:451
81620rcu_preempt0-21swapper/100:16:131
81620rcu_preempt0-21swapper/019:31:080
90050610irq/17-ehci_hcd946-21usb-storage21:09:391
81610rcu_preempt32612-21ssh00:37:311
81610rcu_preempt2651-21ssh22:37:201
81610rcu_preempt23023-21diskstats00:19:560
81610rcu_preempt22418-21ssh22:14:251
81610rcu_preempt15697-21ssh00:04:301
81610rcu_preempt0-21swapper/023:54:080
81610rcu_preempt0-21swapper/022:11:140
81600rcu_preempt7779-21if_eth120:19:590
81600rcu_preempt0-21swapper/122:59:341
81600rcu_preempt0-21swapper/122:40:041
81600rcu_preempt0-21swapper/121:26:591
81600rcu_preempt0-21swapper/100:30:021
81590rcu_preempt4810-21ssh23:43:291
81590rcu_preempt24472-21ssh22:17:171
81590rcu_preempt0-21swapper/122:24:591
81590rcu_preempt0-21swapper/122:20:031
81590rcu_preempt0-21swapper/121:34:581
81590rcu_preempt0-21swapper/121:20:361
81590rcu_preempt0-21swapper/120:24:561
81590rcu_preempt0-21swapper/119:10:051
81590rcu_preempt0-21swapper/100:20:021
81590rcu_preempt0-21swapper/023:55:050
81590rcu_preempt0-21swapper/023:24:320
81590rcu_preempt0-21swapper/022:50:500
81590rcu_preempt0-21swapper/021:55:320
81580rcu_preempt9074-21ssh21:49:150
81580rcu_preempt32146-21ssh23:33:491
81580rcu_preempt25555-21sendmail-msp21:19:390
81580rcu_preempt19888-21diskmemload22:33:511
81580rcu_preempt16560-21rm22:02:101
81580rcu_preempt10062-21ssh22:50:431
81580rcu_preempt0-21swapper/123:51:091
81580rcu_preempt0-21swapper/123:25:121
81580rcu_preempt0-21swapper/121:34:081
81580rcu_preempt0-21swapper/121:16:071
81580rcu_preempt0-21swapper/120:04:291
81580rcu_preempt0-21swapper/100:13:331
81580rcu_preempt0-21swapper/023:35:340
81580rcu_preempt0-21swapper/022:45:040
90050570irq/17-ehci_hcd24552-21ssh22:17:330
81570rcu_preempt5249-21ssh22:42:100
81570rcu_preempt31065-21cpu21:29:530
81570rcu_preempt30099-21ssh22:28:480
81570rcu_preempt27656-21ssh21:22:330
81570rcu_preempt0-21swapper/123:20:321
81570rcu_preempt0-21swapper/121:00:011
81570rcu_preempt0-21swapper/023:40:260
81570rcu_preempt0-21swapper/021:35:300
81560rcu_preempt0-21swapper/120:35:061
81560rcu_preempt0-21swapper/119:40:131
81560rcu_preempt0-21swapper/023:31:340
81560rcu_preempt0-21swapper/023:06:410
81560rcu_preempt0-21swapper/023:06:410
81560rcu_preempt0-21swapper/000:33:550
81560rcu_preempt0-21swapper/000:10:020
81550rcu_preempt0-21swapper/120:04:471
81550rcu_preempt0-21swapper/119:48:081
81550rcu_preempt0-21swapper/023:47:350
81550rcu_preempt0-21swapper/023:01:290
81550rcu_preempt0-21swapper/022:35:040
81550rcu_preempt0-21swapper/020:15:010
81550rcu_preempt0-21swapper/020:04:450
81550rcu_preempt0-21swapper/020:01:490
81550rcu_preempt0-21swapper/019:56:080
81550rcu_preempt0-21swapper/019:44:560
81540rcu_preempt12467-21egrep20:39:521
81540rcu_preempt0-21swapper/119:56:081
81540rcu_preempt0-21swapper/023:29:380
81540rcu_preempt0-21swapper/022:20:500
81540rcu_preempt0-21swapper/021:53:210
81540rcu_preempt0-21swapper/019:49:570
81540rcu_preempt0-21swapper/019:25:020
81540rcu_preempt0-21swapper/000:35:100
81530rcu_preempt0-21swapper/120:21:081
81530rcu_preempt0-21swapper/021:26:450
81530rcu_preempt0-21swapper/021:06:270
81530rcu_preempt0-21swapper/000:27:260
81520rcu_preempt28594-21df_inode19:34:541
81520rcu_preempt21933-21ssh23:14:450
81520rcu_preempt0-21swapper/120:45:101
81520rcu_preempt0-21swapper/119:26:131
81520rcu_preempt0-21swapper/019:36:080
81510rcu_preempt0-21swapper/019:16:210
151850510irq/30-eth0-tx-20997-21/usr/sbin/munin19:04:540
81500rcu_preempt19006-21df_inode21:05:001
81460rcu_preempt24270-21date19:15:051
81460rcu_preempt10441-21memory20:30:000
81450rcu_preempt18482-21timerandwakeup21:00:070
151950450irq/31-eth0-tx-0-21swapper/120:50:081
81440rcu_preempt16049-21users20:50:070
81430rcu_preempt12719-21fw_conntrack20:39:550
151950430irq/31-eth0-tx-19-21ksoftirqd/120:33:301
21905994238cyclictest2235-21snmpd20:38:110
81390rcu_preempt30349-21ntp_states19:40:020
151950370irq/31-eth0-tx-19322-21kworker/1:019:33:281
151950360irq/31-eth0-tx-8829-21df_abs20:24:560
90050350irq/17-ehci_hcd946-21usb-storage20:58:280
1599340migration/024822-21/usr/sbin/munin19:19:560
81320rcu_preempt3-21ksoftirqd/020:49:390
21905993028cyclictest946-21usb-storage19:10:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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