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2025-11-22 - 19:54
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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 rackbslot7.osadl.org (updated Sat Nov 22, 2025 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2659421230,3sleep1291rcuc/110:29:401
78849910343,33cyclictest7863-21cyclictest11:31:022
78849910343,33cyclictest7863-21cyclictest11:31:022
78749910149,29cyclictest30182-21apt-get11:34:321
78719910029,32cyclictest15-21ksoftirqd/012:15:000
65912999,58sleep06665-21fschecks_time07:04:500
65912999,58sleep06665-21fschecks_time07:04:500
734229723,44sleep30-21swapper/307:05:143
734229723,44sleep30-21swapper/307:05:143
7884999525,38cyclictest355-21runrttasks08:11:592
7884999523,39cyclictest14302-21grep12:04:382
650829514,39sleep20-21swapper/207:04:442
650829514,39sleep20-21swapper/207:04:442
7884999432,27cyclictest10953-21seq10:59:372
7884999431,26cyclictest22683-21seq07:50:332
7874999461,13cyclictest181rcu_preempt08:59:511
7884999332,31cyclictest23838-21taskset10:24:262
7884999332,28cyclictest12952-21taskset07:22:482
7884999330,25cyclictest23251-21seq11:21:002
7884999320,30cyclictest5444-21cstates10:49:392
7874999364,23cyclictest9028-21sh11:54:441
7884999234,24cyclictest16704-21taskset11:09:442
7884999233,27cyclictest24953-21seq12:23:102
7884999231,26cyclictest6784-21ssh09:53:152
7884999231,25cyclictest30057-21irqstats08:14:472
7884999230,29cyclictest20386-21ssh11:15:252
7884999230,26cyclictest27734-21ssh12:27:482
7884999230,26cyclictest27734-21ssh12:27:482
7884999230,23cyclictest15761-21find09:09:312
7884999227,27cyclictest1853-21apt-get08:29:352
7884999227,24cyclictest0-21swapper/210:46:532
7884999224,30cyclictest31145-21runrttasks12:34:202
7884999131,25cyclictest0-21swapper/209:15:002
7884999131,25cyclictest0-21swapper/209:15:002
7884999130,24cyclictest22352-21ssh12:19:132
7884999129,29cyclictest4919-21grep08:35:142
7884999127,28cyclictest0-21swapper/209:44:582
7884999032,24cyclictest6841-21seq08:43:182
7884999030,26cyclictest25966-21ssh09:28:252
7884999030,25cyclictest31629-21ssh12:34:422
7884999029,27cyclictest12269-21taskset08:59:382
7874999044,13cyclictest181rcu_preempt11:39:501
7884998926,30cyclictest16301-21apt-get07:34:352
7884998926,30cyclictest16301-21apt-get07:34:352
7874998938,25cyclictest7863-21cyclictest07:49:241
7874998938,25cyclictest7863-21cyclictest07:49:241
7884998829,28cyclictest24475-21seq07:57:582
7884998828,27cyclictest19116-21ssh10:14:532
7884998827,26cyclictest0-21swapper/207:34:232
7884998824,29cyclictest15472-21diskmemload10:41:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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