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2025-12-19 - 19:44
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 100 highest latencies:
System rackaslot8.osadl.org (updated Fri Dec 19, 2025 12:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320412298271,18sleep10-21swapper/107:05:431
322092288264,15sleep20-21swapper/207:07:522
320882276246,20sleep00-21swapper/007:06:180
323232262231,20sleep30-21swapper/307:09:063
57512160,0sleep20-21swapper/212:05:132
102102160,0sleep00-21swapper/008:40:150
286032140,0sleep20-21swapper/211:45:112
325099990,6cyclictest9803-21taskset11:00:232
325019993,3cyclictest11801-21munin-run07:35:010
325099984,2cyclictest9833-21apt-get07:30:102
325099982,4cyclictest14137-21basename07:40:012
325099982,2cyclictest19938-21processes07:50:182
325099981,5cyclictest31030-21taskset10:35:232
325099981,4cyclictest28-21ksoftirqd/208:00:162
325099981,3cyclictest10613-21awk08:40:182
325099980,5cyclictest14586-21taskset11:14:262
325019987,1cyclictest12-21ksoftirqd/012:20:000
325019984,3cyclictest275-21systemd-journal10:45:000
325019981,4cyclictest7983-21idleruntime-cro11:00:000
325139973,3cyclictest658-21snmpd09:58:313
325139973,3cyclictest25547-21df09:15:123
325139970,1cyclictest0-21swapper/309:05:173
325099974,2cyclictest6240-21cron09:45:022
325099974,2cyclictest26070-21apt-get08:05:012
325099973,3cyclictest5129-21plymouth07:20:022
325099973,3cyclictest29200-21apt10:35:002
325099973,3cyclictest275-21systemd-journal12:35:012
325099973,3cyclictest27076-21systemctl09:19:232
325099973,3cyclictest2556-21turbostat.cron12:00:002
325099973,3cyclictest23844-21cron11:35:002
325099973,3cyclictest2262-21latency_hist07:15:022
325099973,3cyclictest16362-21latency_hist07:45:002
325099973,3cyclictest16218-21cron12:30:012
325099973,3cyclictest1267-21cron10:45:012
325099972,4cyclictest0-21swapper/210:15:122
325099972,3cyclictest275-21systemd-journal07:20:012
325099972,1cyclictest9747-21kernelversion09:50:152
325099971,3cyclictest28-21ksoftirqd/211:40:162
325099970,5cyclictest9371-21taskset07:27:532
325099970,5cyclictest31407-21taskset09:27:162
325099970,3cyclictest6496-21tune2fs10:55:152
325099970,3cyclictest16993-21switchtime10:05:192
325049973,3cyclictest658-21snmpd07:43:311
325049973,3cyclictest504-21dbus-daemon12:40:001
325049973,3cyclictest275-21systemd-journal09:21:211
325049973,3cyclictest275-21systemd-journal09:21:211
325049973,3cyclictest275-21systemd-journal09:07:591
325049973,3cyclictest14189-21cat10:00:131
325019974,2cyclictest9474-21sshd12:14:320
325019973,3cyclictest658-21snmpd10:38:010
325019971,3cyclictest2600-21idleruntime-cro12:00:000
325139963,2cyclictest275-21systemd-journal10:44:263
325139963,2cyclictest275-21systemd-journal09:25:303
325139963,2cyclictest23695-21tr10:20:163
325139963,2cyclictest1473-21memory08:20:163
325139962,3cyclictest658-21snmpd12:35:283
325139962,3cyclictest658-21snmpd12:22:483
325139962,3cyclictest658-21snmpd12:10:303
325139962,3cyclictest658-21snmpd11:58:383
325139962,3cyclictest658-21snmpd11:35:083
325139962,3cyclictest658-21snmpd11:00:353
325139962,3cyclictest658-21snmpd10:59:493
325139962,3cyclictest658-21snmpd10:38:403
325139962,3cyclictest658-21snmpd10:32:213
325139962,3cyclictest658-21snmpd10:26:453
325139962,3cyclictest658-21snmpd10:09:243
325139962,3cyclictest658-21snmpd08:47:123
325139962,3cyclictest658-21snmpd08:15:203
325139962,3cyclictest658-21snmpd08:10:533
325139962,3cyclictest658-21snmpd07:54:053
325139962,3cyclictest658-21snmpd07:25:563
325139962,3cyclictest560-21gdbus09:40:053
325139962,3cyclictest4163-21forks10:50:133
325139962,3cyclictest2863-21cat09:35:163
325139962,3cyclictest275-21systemd-journal12:31:383
325139962,3cyclictest26526-21fschecks_count08:05:143
325139962,3cyclictest17509-21expr11:20:153
325139962,3cyclictest17509-21expr11:20:143
325139962,3cyclictest16736-21grep07:45:123
325139962,3cyclictest11052-21grep07:30:193
325139960,2cyclictest27443-21/usr/sbin/munin09:20:203
325139960,2cyclictest27443-21/usr/sbin/munin09:20:203
325099966,0cyclictest0-21swapper/208:15:012
325099963,2cyclictest8488-21awk09:50:012
325099963,2cyclictest504-21dbus-daemon11:15:152
325099963,2cyclictest20678-21idleruntime-cro12:40:012
325099963,2cyclictest1984-21tune2fs10:45:152
325099963,2cyclictest1611-21ntpq08:20:182
325099963,2cyclictest12394-21smartctl08:45:132
325099963,2cyclictest0-21swapper/208:10:022
325099962,3cyclictest9545-21turbostat.cron12:15:012
325099962,3cyclictest658-21snmpd09:00:122
325099962,3cyclictest658-21snmpd08:55:002
325099962,3cyclictest658-21snmpd07:55:532
325099962,3cyclictest6074-21ntp_states08:30:172
325099962,3cyclictest504-21dbus-daemon08:56:192
325099962,3cyclictest3235-21expr08:25:132
325099962,3cyclictest3115-21/usr/sbin/munin12:00:132
325099962,3cyclictest21681-21cut11:30:012
325099962,3cyclictest20894-21expr09:05:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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