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2025-11-03 - 11:50
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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 Nov 03, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81860rcu_preempt0-21swapper/119:11:031
81730rcu_preempt15322-21ssh00:25:121
81730rcu_preempt15322-21ssh00:25:121
81720rcu_preempt15467-21sh21:25:051
89950710irq/17-ehci_hcd8492-21memory22:11:051
81710rcu_preempt0-21swapper/023:25:390
81710rcu_preempt0-21swapper/021:39:100
81710rcu_preempt0-21swapper/021:10:390
81700rcu_preempt24247-21apt-get22:40:521
81700rcu_preempt0-21swapper/122:28:591
81700rcu_preempt0-21swapper/120:06:021
81700rcu_preempt0-21swapper/022:42:220
81700rcu_preempt0-21swapper/022:33:250
81700rcu_preempt0-21swapper/022:18:230
81700rcu_preempt0-21swapper/021:16:020
81690rcu_preempt9952-21diskmemload21:42:511
81690rcu_preempt10036-21ssh23:13:560
81690rcu_preempt10036-21ssh23:13:560
81690rcu_preempt0-21swapper/123:05:421
81680rcu_preempt26471-21ssh23:45:240
81680rcu_preempt0-21swapper/123:26:561
81680rcu_preempt0-21swapper/121:52:431
89950670irq/17-ehci_hcd0-21swapper/123:19:251
81670rcu_preempt9952-21diskmemload00:40:031
81670rcu_preempt9949-21munin-run21:15:380
81670rcu_preempt21645-21grep22:35:591
81670rcu_preempt10771-21latency00:16:041
81670rcu_preempt0-21swapper/121:36:051
81670rcu_preempt0-21swapper/119:40:581
81670rcu_preempt0-21swapper/000:03:570
81660rcu_preempt7571-21/usr/sbin/munin21:06:031
81660rcu_preempt28589-21ssh22:48:051
81660rcu_preempt15969-21apt-get19:30:531
81660rcu_preempt0-21swapper/123:37:181
81660rcu_preempt0-21swapper/122:53:361
81660rcu_preempt0-21swapper/023:51:180
81660rcu_preempt0-21swapper/022:37:110
81660rcu_preempt0-21swapper/021:52:400
81660rcu_preempt0-21swapper/021:41:010
81660rcu_preempt0-21swapper/000:42:360
81650rcu_preempt30835-1kworker/1:0H00:29:011
81650rcu_preempt30835-1kworker/1:0H00:29:011
81650rcu_preempt29323-21latency_hist23:50:380
81650rcu_preempt19-21ksoftirqd/100:35:181
81650rcu_preempt0-21swapper/123:03:151
81650rcu_preempt0-21swapper/021:47:010
81650rcu_preempt0-21swapper/021:27:410
89950640irq/17-ehci_hcd41ktimersoftd/019:11:030
81640rcu_preempt6184-21mailstats22:06:051
81640rcu_preempt2382-21munin-run20:45:390
81640rcu_preempt0-21swapper/121:32:441
81640rcu_preempt0-21swapper/120:20:491
81640rcu_preempt0-21swapper/120:20:491
81640rcu_preempt0-21swapper/100:05:371
81640rcu_preempt0-21swapper/019:30:550
81640rcu_preempt0-21swapper/000:35:330
81630rcu_preempt863-21sendmail_mailtr22:56:040
81630rcu_preempt28828-21ssh23:49:111
81630rcu_preempt18977-21df_abs22:30:571
81630rcu_preempt1088-21munin-run20:40:381
81630rcu_preempt0-21swapper/121:46:011
81630rcu_preempt0-21swapper/119:58:421
81630rcu_preempt0-21swapper/119:49:071
81630rcu_preempt0-21swapper/119:38:301
81620rcu_preempt6570-21ssh00:06:521
81620rcu_preempt3-21ksoftirqd/023:39:280
81620rcu_preempt2937-21idleruntime23:00:590
81620rcu_preempt11867-21ssh21:17:421
81620rcu_preempt0-21swapper/123:58:201
81620rcu_preempt0-21swapper/122:17:001
81620rcu_preempt0-21swapper/122:02:391
81620rcu_preempt0-21swapper/022:26:030
81620rcu_preempt0-21swapper/022:09:540
81620rcu_preempt0-21swapper/020:55:580
81610rcu_preempt29466-21ssh23:50:461
81610rcu_preempt20441-21ssh23:32:471
81610rcu_preempt0-21swapper/021:20:580
81600rcu_preempt8030-21ssh00:10:531
81600rcu_preempt6035-21ntp_states23:06:030
81600rcu_preempt3-21ksoftirqd/000:40:050
81600rcu_preempt2224-21snmpd19:26:491
81600rcu_preempt21130-21cpuspeed_turbos19:50:541
81600rcu_preempt14536-21sshd19:22:211
81600rcu_preempt1444-21ssh22:57:141
81600rcu_preempt10466-21ssh23:15:271
81600rcu_preempt10466-21ssh23:15:271
81600rcu_preempt0-21swapper/120:51:021
81600rcu_preempt0-21swapper/120:16:001
81600rcu_preempt0-21swapper/100:41:371
81600rcu_preempt0-21swapper/023:20:120
81600rcu_preempt0-21swapper/022:25:240
81590rcu_preempt23493-21ls20:00:381
81590rcu_preempt20800-21ssh23:34:010
81590rcu_preempt17202-21ssh21:26:381
81590rcu_preempt0-21swapper/123:41:151
81590rcu_preempt0-21swapper/122:22:561
81590rcu_preempt0-21swapper/121:55:411
81590rcu_preempt0-21swapper/023:58:270
81590rcu_preempt0-21swapper/022:47:420
81590rcu_preempt0-21swapper/020:01:070
81580rcu_preempt7406-21sshd21:05:181
81580rcu_preempt3254-21ssh22:01:010
81580rcu_preempt15029-21rm23:23:041
81580rcu_preempt0-21swapper/120:46:031
81580rcu_preempt0-21swapper/021:04:450
81580rcu_preempt0-21swapper/019:56:040
81570rcu_preempt31910-21ssh22:54:470
81570rcu_preempt0-21swapper/120:25:561
81570rcu_preempt0-21swapper/120:25:561
81570rcu_preempt0-21swapper/023:25:020
81570rcu_preempt0-21swapper/021:33:370
81570rcu_preempt0-21swapper/000:26:020
81570rcu_preempt0-21swapper/000:26:020
81570rcu_preempt0-21swapper/000:19:360
81560rcu_preempt9324-21ssh00:12:070
81560rcu_preempt2278-21ssh22:00:210
81560rcu_preempt1823-21memory20:40:591
81560rcu_preempt12158-21cat19:15:390
81560rcu_preempt0-21swapper/120:10:571
81560rcu_preempt0-21swapper/019:46:000
81550rcu_preempt0-21swapper/020:51:020
81550rcu_preempt0-21swapper/020:20:590
81550rcu_preempt0-21swapper/020:20:590
141050550irq/28-eth0-rx-41ktimersoftd/000:24:240
141050550irq/28-eth0-rx-41ktimersoftd/000:24:240
81540rcu_preempt9257-21ssh22:11:540
81540rcu_preempt12745-21memory19:15:581
81540rcu_preempt0-21swapper/121:15:361
81540rcu_preempt0-21swapper/020:30:560
81540rcu_preempt0-21swapper/020:29:180
81540rcu_preempt0-21swapper/020:29:180
81540rcu_preempt0-21swapper/020:12:120
12057995446cyclictest945-21usb-storage20:31:041
81530rcu_preempt0-21swapper/120:56:581
81530rcu_preempt0-21swapper/000:08:220
12056995349cyclictest945-21usb-storage19:55:380
81520rcu_preempt18613-21df19:40:520
81520rcu_preempt0-21swapper/020:46:010
81520rcu_preempt0-21swapper/020:36:220
81520rcu_preempt0-21swapper/020:06:160
81520rcu_preempt0-21swapper/019:27:110
81500rcu_preempt0-21swapper/020:20:110
12056995046cyclictest945-21usb-storage19:20:390
81480rcu_preempt17697-21irqstats19:35:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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