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2026-06-09 - 05:36
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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 rackbslot7.osadl.org (updated Tue Jun 09, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9981212515,71sleep010068-21grep18:55:160
9981212515,71sleep010068-21grep18:55:160
105849910967,21cyclictest181rcu_preempt21:30:201
105849910419,32cyclictest0-21swapper/122:40:021
105849910213,79cyclictest19422-21apt-get22:49:461
105849910178,16cyclictest19974-21ssh23:44:451
21042990,7sleep10-21swapper/122:20:041
21042990,7sleep10-21swapper/122:20:041
10584999873,9cyclictest181rcu_preempt20:24:311
1058499963,55cyclictest7954-21apt-get23:25:321
1058499963,55cyclictest7954-21apt-get23:25:321
10580999679,11cyclictest277-21dbus-daemon22:49:290
10580999679,11cyclictest277-21dbus-daemon22:49:290
10584999563,8cyclictest181rcu_preempt20:39:511
10584999557,13cyclictest181rcu_preempt21:03:431
10584999557,13cyclictest181rcu_preempt21:03:431
10591999431,29cyclictest19214-21runrttasks21:54:532
10584999459,13cyclictest181rcu_preempt20:19:031
10584999360,11cyclictest181rcu_preempt00:06:401
10584999318,58cyclictest9816-21apt-get21:39:541
10584999318,58cyclictest9816-21apt-get21:39:541
10591999276,8cyclictest0-21swapper/200:09:482
10591999235,21cyclictest297-21systemd-logind19:39:292
10591999231,25cyclictest4091-21taskset22:24:382
10591999230,30cyclictest8278-21runrttasks23:25:332
10591999230,30cyclictest8278-21runrttasks23:25:332
10584999251,25cyclictest10571-21cyclictest23:10:021
10580999263,8cyclictest0-21swapper/023:44:430
10591999129,30cyclictest31156-21ssh22:14:542
10584999147,11cyclictest181rcu_preempt21:22:491
10580999172,9cyclictest0-21swapper/023:34:460
10591999030,29cyclictest9222-21seq20:32:112
10584999034,10cyclictest0-21swapper/122:02:211
10591998967,16cyclictest6469-21latency_hist21:34:312
10591998930,24cyclictest19884-21ssh23:44:432
10591998928,26cyclictest2814-21ssh22:21:472
10591998928,26cyclictest2814-21ssh22:21:472
10591998924,29cyclictest0-21swapper/200:19:572
10584998965,10cyclictest181rcu_preempt00:25:181
10584998956,13cyclictest181rcu_preempt19:54:481
10584998949,19cyclictest181rcu_preempt21:27:031
10584998948,13cyclictest181rcu_preempt19:04:371
10584998946,8cyclictest181rcu_preempt20:35:021
10591998830,18cyclictest235742sh22:55:182
10584998853,12cyclictest181rcu_preempt23:01:071
10580998855,17cyclictest181rcu_preempt23:19:280
10591998765,11cyclictest0-21swapper/200:04:312
10591998757,21cyclictest27902-21idleruntime19:49:502
10591998743,37cyclictest16219-21ssh22:44:432
10591998743,37cyclictest16219-21ssh22:44:432
10591998728,25cyclictest17466-21seq20:59:252
10591998725,25cyclictest5872-21taskset00:14:582
10591998725,25cyclictest5872-21taskset00:14:582
10584998752,13cyclictest181rcu_preempt19:49:541
10580998742,37cyclictest0-21swapper/021:04:410
10591998629,23cyclictest26159-21fschecks_time23:54:522
10591998629,23cyclictest26159-21fschecks_time23:54:522
10591998628,27cyclictest17497-21diskmemload22:40:322
10591998626,29cyclictest21100-21taskset22:51:422
10584998646,13cyclictest181rcu_preempt21:53:101
10584998646,13cyclictest181rcu_preempt21:53:101
10584998645,14cyclictest181rcu_preempt00:10:031
10584998633,17cyclictest0-21swapper/118:59:321
10584998633,17cyclictest0-21swapper/118:59:321
10591998565,9cyclictest0-21swapper/221:11:032
10591998562,12cyclictest0-21swapper/220:14:312
10591998529,22cyclictest17497-21diskmemload23:13:002
10591998529,20cyclictest1384-21sh00:07:522
10591998528,24cyclictest22250-21seq19:31:272
10591998528,22cyclictest20026-21taskset21:02:322
10591998528,22cyclictest20026-21taskset21:02:322
10591998527,28cyclictest28747-21ssh22:10:072
10591998527,28cyclictest28747-21ssh22:10:072
10591998527,23cyclictest7704-21ssh22:29:592
10591998522,30cyclictest15466-21ssh23:36:212
10584998560,11cyclictest181rcu_preempt20:04:491
10584998551,12cyclictest181rcu_preempt20:55:021
10584998551,10cyclictest181rcu_preempt20:54:251
10584998546,20cyclictest181rcu_preempt22:25:041
10584998546,13cyclictest181rcu_preempt21:14:371
10584998546,13cyclictest181rcu_preempt21:14:371
10580998562,12cyclictest0-21swapper/019:15:050
10591998464,11cyclictest0-21swapper/219:59:512
10591998428,19cyclictest12434-21seq20:42:042
10591998423,26cyclictest19578-21munin-run23:44:292
10591998423,26cyclictest19578-21munin-run23:44:292
10591998421,28cyclictest10943-21cut21:41:062
10591998421,28cyclictest10943-21cut21:41:062
10584998460,15cyclictest2374-21systemd-journal21:39:281
10584998445,12cyclictest181rcu_preempt19:29:511
10584998429,31cyclictest0-21swapper/122:59:301
10580998464,14cyclictest25127-21threads19:40:020
10580998457,21cyclictest21763-21ssh22:53:360
10591998363,11cyclictest0-21swapper/219:04:302
10591998363,11cyclictest0-21swapper/219:04:302
10591998329,25cyclictest12321-21taskset23:30:502
10591998329,24cyclictest25318-21taskset23:53:552
10591998327,20cyclictest10844-21seq20:37:182
10591998320,25cyclictest15825-21runrttasks20:53:582
10584998359,18cyclictest27985-21sh23:04:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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