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2025-11-13 - 05:20
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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 50 highest latencies:
System rackeslot6.osadl.org (updated Wed Nov 12, 2025 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2904607998679,5cyclictest2961103-21kworker/u8:0+flush-179:010:05:251
2904607998679,4cyclictest2914075-21kworker/u8:2+events_unbound07:40:241
2904604998674,8cyclictest2909304-21latency_hist07:25:010
2904607998569,5cyclictest2978664-21kworker/u8:3+events_unbound11:10:151
2904607998479,4cyclictest2954467-21kworker/u8:2+flush-179:010:00:251
2904604997872,4cyclictest2991335-21kworker/u8:0+flush-179:011:45:270
290460499761,72cyclictest1-21systemd11:05:010
2904607997570,4cyclictest2957141-21kworker/u8:0+flush-179:009:55:251
2904604997565,8cyclictest2975689-21apt-get10:50:120
2904604997565,8cyclictest2946770-21/usr/sbin/munin09:20:250
2904604997551,7cyclictest2953158-21apt-get09:40:120
2904607997464,8cyclictest2954726-21/usr/sbin/munin09:45:211
2904607997368,4cyclictest2937969-21kworker/u8:0+events_unbound08:55:261
2904607997368,4cyclictest2925740-21kworker/u8:1+flush-179:008:35:201
2904607997365,5cyclictest2973880-21kworker/u8:2+events_unbound11:00:201
2904604997364,7cyclictest2911129-21/usr/sbin/munin07:30:220
2904607997267,4cyclictest2925740-21kworker/u8:1+events_unbound09:30:251
2904607997265,5cyclictest2910865-21kworker/u8:1+events_unbound07:45:241
2904604997262,8cyclictest2969305-21/usr/sbin/munin10:30:250
2904604997162,7cyclictest2946523-21latency_hist09:20:010
2904604997162,7cyclictest2946523-21latency_hist09:20:010
2904607996964,4cyclictest2910865-21kworker/u8:1+flush-179:007:35:261
2904607996963,5cyclictest2962688-21kworker/u8:2+flush-179:010:20:271
2904607996962,5cyclictest2996124-21kworker/u8:1+events_unbound12:05:141
2904607996863,4cyclictest2984964-21kworker/u8:2+flush-179:011:35:261
2904607996863,4cyclictest2925740-21kworker/u8:1+flush-179:009:20:271
2904607996857,9cyclictest2936914-21latency_hist08:50:011
2904607996763,3cyclictest2898491-21kworker/u8:2+events_unbound07:15:251
2904607996757,3cyclictest2973880-21kworker/u8:2+events_unbound10:55:231
2904607996561,3cyclictest2957803-21kworker/u8:1+flush-179:010:10:261
2904607996561,3cyclictest2957803-21kworker/u8:1+flush-179:010:10:251
2904607996559,5cyclictest2925740-21kworker/u8:1+flush-179:009:00:221
290460499650,3cyclictest723-21Xorg08:37:000
2904607996459,4cyclictest2978664-21kworker/u8:3+flush-179:011:05:241
2904607996454,4cyclictest3001158-21kworker/u8:3+events_unbound12:30:251
2904604996455,6cyclictest2904494-21latency_hist07:10:020
2904604996455,6cyclictest2904494-21latency_hist07:10:020
2904607996258,3cyclictest2964318-21kworker/u8:3+events_unbound10:40:241
2904607996257,4cyclictest3001158-21kworker/u8:3+events_unbound12:20:231
2904607996255,6cyclictest2925740-21kworker/u8:1+events_unbound08:50:151
2904604996151,7cyclictest3003052-21kworker/u8:2+flush-179:012:35:230
2904607996055,4cyclictest2954467-21kworker/u8:2+flush-179:009:50:241
2904607996055,4cyclictest2925740-21kworker/u8:1+events_unbound09:35:251
2904607996055,4cyclictest2925740-21kworker/u8:1+events_unbound08:40:251
2904607996055,4cyclictest2925740-21kworker/u8:1+events_unbound08:30:251
2904607995953,4cyclictest3003052-21kworker/u8:2+events_unbound12:35:231
2904607995953,4cyclictest2914154-21kworker/u8:3+flush-179:008:00:211
2904604995950,7cyclictest2943576-21/usr/sbin/munin09:10:250
2904604995949,8cyclictest2996385-21apt-get11:55:160
2904607995851,5cyclictest2991335-21kworker/u8:0+events_unbound11:45:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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