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2025-07-02 - 06:59
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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 highest latencies:
System rack3slot6.osadl.org (updated Wed Jul 02, 2025 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31011210019,31sleep10-21swapper/119:07:091
31464998043,23cyclictest26-21ksoftirqd/121:00:291
31464997944,20cyclictest26-21ksoftirqd/121:09:211
31464997943,21cyclictest26-21ksoftirqd/123:16:111
31464997942,23cyclictest26-21ksoftirqd/100:10:131
31464997741,20cyclictest26-21ksoftirqd/121:52:281
31464997642,15cyclictest26-21ksoftirqd/121:24:371
31464997148,11cyclictest26-21ksoftirqd/100:08:121
31462997152,13cyclictest14-21ksoftirqd/019:50:140
3128727021,39sleep00-21swapper/019:09:360
31462996741,15cyclictest4057-21apt-get22:25:170
31462996733,19cyclictest14-21ksoftirqd/023:10:170
31462996711,49cyclictest0-21swapper/019:35:150
79772640,7sleep17972-21unixbench_multi19:30:381
37952630,8chrt23199-21apache200:00:020
31464996349,9cyclictest26-21ksoftirqd/121:10:191
31462996318,39cyclictest10995-21aten2.4-expect00:20:190
31464996248,9cyclictest26-21ksoftirqd/119:29:001
31462996213,44cyclictest0-21swapper/022:50:150
31462996126,17cyclictest261-21systemd-journal21:41:310
31464996015,10cyclictest251rcuc/121:35:141
31462996024,17cyclictest12284-21diskstats21:15:250
31462996019,35cyclictest15467-21aten2.4-expect21:25:180
3146299593,20cyclictest2775-21grep20:50:170
31462995913,41cyclictest420-21dbus-daemon19:50:000
31462995913,41cyclictest420-21dbus-daemon19:49:590
31462995913,18cyclictest0-21swapper/020:30:160
259472590,7chrt0-21swapper/121:55:131
31464995815,9cyclictest251rcuc/100:40:001
31464995815,10cyclictest251rcuc/120:20:401
31464995814,10cyclictest251rcuc/123:31:511
31464995814,10cyclictest251rcuc/119:52:021
31464995813,9cyclictest251rcuc/122:38:411
31464995810,15cyclictest26-21ksoftirqd/119:15:061
3146299587,11cyclictest0-21swapper/022:00:130
31462995836,17cyclictest9426-21grep21:05:370
31462995830,21cyclictest14-21ksoftirqd/021:10:150
31462995816,36cyclictest25832-21tail23:30:220
3146499579,14cyclictest26-21ksoftirqd/120:35:401
3146499577,45cyclictest0-21swapper/119:36:241
3146499572,50cyclictest20494-21chrt20:07:191
3146499572,49cyclictest20162-21taskset23:13:531
31464995719,15cyclictest26-21ksoftirqd/122:47:261
31464995718,16cyclictest26-21ksoftirqd/120:53:261
31464995714,11cyclictest251rcuc/122:22:081
31464995714,10cyclictest251rcuc/123:23:341
31464995714,10cyclictest251rcuc/122:15:441
31464995712,11cyclictest251rcuc/120:02:101
31464995711,11cyclictest251rcuc/120:55:411
3146299575,46cyclictest4604-21apt-get20:55:150
3146299574,20cyclictest18738-21cron21:35:000
3146299574,14cyclictest30813-21apt23:45:000
3146299573,49cyclictest869-21aten2.4_r3power20:45:170
3146299573,49cyclictest7188-21latency_hist00:10:010
31462995720,32cyclictest16497-21sort23:00:280
31464995635,16cyclictest22157-21taskset20:10:591
3146499562,49cyclictest9842-21ntpq00:15:311
31464995619,16cyclictest24899-21cat23:25:401
31464995619,14cyclictest26-21ksoftirqd/123:50:571
31464995619,14cyclictest26-21ksoftirqd/123:36:041
31464995618,15cyclictest26-21ksoftirqd/122:02:021
31464995615,9cyclictest251rcuc/122:08:231
31464995615,9cyclictest251rcuc/121:17:451
31464995615,10cyclictest251rcuc/123:47:591
31464995615,10cyclictest251rcuc/120:16:241
31464995615,10cyclictest251rcuc/119:46:071
31464995615,10cyclictest251rcuc/119:46:071
31464995614,9cyclictest251rcuc/122:27:221
31464995614,11cyclictest251rcuc/122:40:401
31464995613,10cyclictest251rcuc/123:55:031
31464995613,10cyclictest251rcuc/123:42:241
31464995613,10cyclictest251rcuc/122:50:521
31464995613,10cyclictest251rcuc/119:21:351
31464995612,11cyclictest251rcuc/121:27:581
31464995611,9cyclictest251rcuc/122:12:231
31464995611,41cyclictest3949-21basename00:00:181
31464995611,41cyclictest3949-21basename00:00:181
3146299563,48cyclictest891-21munin-node19:15:090
3146299563,25cyclictest25122-21needreboot20:20:270
31462995622,29cyclictest0-21swapper/020:16:130
31462995618,32cyclictest22307-21aten2.4-expect23:20:180
31462995616,35cyclictest26627-21if_enp3s020:25:250
31462995615,35cyclictest7712-21seq21:00:390
31464995515,8cyclictest151rcu_preempt21:30:301
31464995515,8cyclictest151rcu_preempt19:10:121
31464995514,9cyclictest251rcuc/100:33:351
31464995513,9cyclictest251rcuc/121:45:121
31464995513,10cyclictest251rcuc/121:44:101
31464995512,10cyclictest251rcuc/119:40:041
31464995511,10cyclictest251rcuc/123:09:351
3146299556,44cyclictest0-21swapper/021:45:200
31462995540,9cyclictest14-21ksoftirqd/000:10:210
3146299553,46cyclictest897-21df_inode22:15:280
3146299553,46cyclictest7842-21apt-get22:35:180
3146299553,46cyclictest17218-21chrt19:59:440
3146299553,46cyclictest16213-21cron00:35:000
3146299553,46cyclictest15351-21awk22:55:400
3146299553,24cyclictest6093-21apt-get22:30:140
31462995529,14cyclictest0-21swapper/022:05:120
31462995518,32cyclictest10506-21aten2.4-expect19:40:180
31464995414,9cyclictest251rcuc/122:31:021
31464995414,9cyclictest251rcuc/100:24:041
31464995414,10cyclictest251rcuc/120:33:081
31464995413,9cyclictest251rcuc/123:00:461
31464995413,9cyclictest251rcuc/120:26:231
31464995413,10cyclictest251rcuc/120:45:061
31464995412,10cyclictest251rcuc/120:43:331
31464995411,10cyclictest251rcuc/119:57:521
3146299547,42cyclictest0-21swapper/021:55:310
3146299546,43cyclictest0-21swapper/020:10:270
3146299545,43cyclictest0-21swapper/022:10:300
3146299544,23cyclictest3813-40systemctl00:00:040
3146299544,23cyclictest3813-40systemctl00:00:040
31462995437,11cyclictest2317-21apt-get22:20:150
3146299543,45cyclictest261-21systemd-journal22:40:310
31462995432,17cyclictest14-21ksoftirqd/022:45:200
31462995427,15cyclictest0-21swapper/020:35:170
31462995418,31cyclictest261-21systemd-journal21:21:270
31464995316,15cyclictest26-21ksoftirqd/100:27:341
31464995314,8cyclictest151rcu_preempt22:55:331
3146299539,39cyclictest7569-21needreboot19:30:290
3146299536,42cyclictest0-21swapper/020:05:380
3146299535,43cyclictest0-21swapper/021:50:120
3146299533,22cyclictest6736-21cron19:30:000
31462995330,18cyclictest261-21systemd-journal00:37:040
31462995321,26cyclictest31951-21cat23:45:380
31462995316,29cyclictest0-21swapper/000:15:130
3146299528,10cyclictest0-21swapper/020:00:330
3146299526,41cyclictest0-21swapper/023:52:450
3146299525,42cyclictest0-21swapper/000:25:280
31462995236,11cyclictest18432-21ntp_states23:05:340
3146299523,42cyclictest27443-21apt-get23:35:160
31462995226,20cyclictest420-21dbus-daemon21:40:000
31462995225,16cyclictest0-21swapper/023:25:200
3146299515,41cyclictest0-21swapper/019:21:380
3146299515,41cyclictest0-21swapper/019:11:000
31462995114,31cyclictest22022-21cat23:20:010
31462995035,9cyclictest171rcuc/020:40:270
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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