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2025-12-09 - 07:14
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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 100 highest latencies:
System rack2slot7.osadl.org (updated Tue Dec 09, 2025 00:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2003002995613,40cyclictest0-21swapper/000:33:130
2003002995125,12cyclictest0-21swapper/023:33:170
2003002994831,2cyclictest2113496-21strings22:28:130
2003002994829,4cyclictest0-21swapper/023:46:470
2003002994732,3cyclictest0-21swapper/021:46:180
2003002994732,3cyclictest0-21swapper/021:46:180
2003002994633,10cyclictest111788-21systemd-journal22:13:570
2003002994530,12cyclictest111788-21systemd-journal00:15:060
200300299421,28cyclictest0-21swapper/023:52:350
200300299411,33cyclictest0-21swapper/023:13:150
200300299405,33cyclictest0-21swapper/021:33:150
2003002994024,2cyclictest0-21swapper/020:08:140
200300299390,24cyclictest0-21swapper/022:18:480
200300299377,8cyclictest0-21swapper/022:09:330
2003003993624,9cyclictest0-21swapper/120:38:061
2003003993421,8cyclictest764-21rs:main1
2003002993417,4cyclictest0-21swapper/000:26:180
2003002993417,15cyclictest2170618-21cat23:28:210
200300299332,12cyclictest0-21swapper/000:17:500
200300299330,25cyclictest2122658-21/usr/sbin/munin22:38:100
200300299311,21cyclictest2109352-21unixbench_multi22:23:180
200300399303,6cyclictest2214988-21ssh00:13:491
200300399302,9cyclictest2137195-21ntpq22:53:151
2003003993015,10cyclictest111788-21systemd-journal22:13:251
200300299302,27cyclictest0-21swapper/000:41:130
2003002992925,2cyclictest11650irq/162-mmc021:46:130
2003002992915,2cyclictest2179725-21fschecks_time23:38:070
200300399285,19cyclictest2165576-21ssh23:23:141
200300299288,3cyclictest2079815-21ntpq21:53:150
2003002992815,2cyclictest0-21swapper/022:36:130
2003004992717,8cyclictest2187756-21sendmail-msp23:54:582
200300399275,16cyclictest619-21mta-sts-daemon21:36:561
200300399273,21cyclictest2050936-21ntpq21:23:131
200300299277,15cyclictest2002999-21systemd-run19:16:120
200300299270,18cyclictest2203687-21cut00:03:080
200300399265,17cyclictest2153941-21latency_hist23:11:151
2003002992623,1cyclictest0-21swapper/022:43:050
200300299261,1cyclictest0-21swapper/000:43:140
200300499254,6cyclictest2089197-21ntpq22:03:112
200300499253,18cyclictest2079816-21ssh21:53:152
2003004992518,4cyclictest0-21swapper/222:48:132
200300399252,19cyclictest2008986-21ntpq19:33:131
2003003992514,6cyclictest111788-21systemd-journal21:31:161
2003003992514,6cyclictest0-21swapper/123:48:161
200300399250,8cyclictest2183305-21ssh23:41:151
200300299254,13cyclictest0-21swapper/021:38:190
2003002992522,2cyclictest2084975-21grep21:58:170
200300299251,15cyclictest2088345-21aten_r2power_cu22:03:050
2003004992415,3cyclictest0-21swapper/223:38:112
200300399244,4cyclictest171rcu_preempt23:26:271
200300399243,3cyclictest171rcu_preempt23:33:181
200300399242,17cyclictest2141954-21ntpq22:58:161
2003003992414,8cyclictest764-21rs:main1
200300299244,16cyclictest2146614-21ssh23:03:120
200300299242,7cyclictest2141802-21ssh22:58:140
2003002992413,7cyclictest2206694-21sendmail-msp00:08:050
200300499236,12cyclictest2229577-21ssh00:30:572
2003004992310,9cyclictest0-21swapper/223:23:122
200300399239,11cyclictest619-21mta-sts-daemon21:42:331
200300399233,12cyclictest1006-21mta-sts-daemon21:46:181
200300399233,12cyclictest1006-21mta-sts-daemon21:46:181
200300299232,20cyclictest58-21kcompactd023:23:140
2003002992317,1cyclictest0-21swapper/019:56:130
2003002992316,1cyclictest0-21swapper/021:23:170
200300499227,12cyclictest2113702-21collect222:28:172
200300499222,16cyclictest2236080-21ntp_states00:38:142
2003004992214,6cyclictest764-21rs:main2
200300399223,13cyclictest2178455-21ssh23:36:391
200300399221,11cyclictest3366315-1kworker/1:0H+kblockd19:16:131
200300299221,20cyclictest0-21swapper/023:18:190
200300599213,7cyclictest0-21swapper/323:33:173
200300499212,15cyclictest2075084-21ntp_states21:48:152
200300499212,15cyclictest2075084-21ntp_states21:48:152
200300399213,17cyclictest633-21gpm00:16:131
2003003992116,4cyclictest2111307-21sendmail-msp22:30:381
2003003992114,5cyclictest2092074-21latency_hist22:06:131
200300399211,16cyclictest2210811-21ssh00:10:161
2003002992120,1cyclictest11650irq/162-mmc020:48:060
200300499206,8cyclictest2231580-21ssh00:33:132
200300499204,6cyclictest11050irq/107-eth%d00:06:272
200300499203,12cyclictest2043913-21diskmemload00:11:192
200300499203,12cyclictest2020177-21sendmail-msp20:12:182
200300499202,16cyclictest111788-21systemd-journal22:14:392
200300399203,13cyclictest619-21mta-sts-daemon21:26:271
200300399202,14cyclictest633-21gpm19:16:451
200300399202,12cyclictest2127785-21ntpq22:43:141
2003002992016,3cyclictest11650irq/162-mmc020:13:130
200300499197,5cyclictest1005-21mta-sts-daemon23:33:172
200300499196,10cyclictest2053419-21sendmail-msp21:31:182
200300499194,10cyclictest2139383-21ssh22:55:572
200300499193,12cyclictest111788-21systemd-journal19:53:062
200300399197,7cyclictest111788-21systemd-journal21:53:301
200300399195,9cyclictest2118282-21ntpq22:33:151
200300399195,12cyclictest1005-21mta-sts-daemon00:26:161
200300299192,3cyclictest0-21swapper/022:46:270
2003002991916,2cyclictest0-21swapper/021:18:060
200300299191,2cyclictest2097692-1kworker/0:0H+kblockd22:53:150
200300299190,19cyclictest0-21swapper/019:18:070
200300599183,8cyclictest0-21swapper/300:11:163
200300599181,8cyclictest0-21swapper/322:15:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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