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2026-07-13 - 12:19
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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 Mon Jul 13, 2026 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19879991243,89cyclictest20371-21apt-get00:22:281
281562990,8sleep128155-21ssh21:52:251
19879999851,42cyclictest19859-21cyclictest22:07:301
19879999840,12cyclictest0-21swapper/100:02:321
19879999840,12cyclictest0-21swapper/100:02:321
1970229610,54sleep119735-21munin-run18:57:091
189322969,61sleep218951-21proc_pri18:52:502
19879999530,13cyclictest0-21swapper/119:47:081
19879999468,19cyclictest0-21swapper/120:03:181
19879999468,19cyclictest0-21swapper/120:03:181
19879999442,14cyclictest24463-21latency_hist21:47:121
19879999435,12cyclictest0-21swapper/119:02:121
1987999923,31cyclictest29971-21latency_hist21:02:111
19868999273,13cyclictest23379-21mailstats22:37:420
19879999040,12cyclictest1762-21latency_hist22:57:111
19879999040,12cyclictest1762-21latency_hist22:57:111
1987999902,28cyclictest27341-21sshd22:44:341
1987999902,28cyclictest27341-21sshd22:44:341
19879998963,17cyclictest20692-21mailstats18:57:431
19879998933,12cyclictest0-21swapper/123:29:321
19879998933,12cyclictest0-21swapper/123:29:321
1987999882,33cyclictest8171-21ntp_states22:12:371
1987999882,33cyclictest8171-21ntp_states22:12:371
19868998851,8cyclictest181rcu_preempt23:44:240
19868998851,8cyclictest181rcu_preempt23:44:240
19879998728,12cyclictest0-21swapper/121:57:331
19868998666,14cyclictest25729-21fschecks_count21:48:460
19868998666,13cyclictest20444-21latency_hist20:37:110
19879998561,18cyclictest31623-21latency_hist23:47:121
19879998561,18cyclictest31623-21latency_hist23:47:121
19868998551,27cyclictest1-21systemd21:55:570
19887998469,8cyclictest0-21swapper/200:17:082
19887998362,13cyclictest31478-40logrotate23:47:102
19887998362,13cyclictest31478-40logrotate23:47:102
19887998353,8cyclictest181rcu_preempt21:32:252
19887998245,7cyclictest181rcu_preempt19:52:322
19868998264,12cyclictest277-21dbus-daemon00:22:090
19879998062,13cyclictest22486-21latency19:02:371
1987999803,28cyclictest10246-21apt-get22:17:241
19868998065,11cyclictest19859-21cyclictest22:55:150
19868998065,11cyclictest19859-21cyclictest22:55:150
1988799792,59cyclictest25210-21sh21:47:482
19879997962,11cyclictest23578-21systemd-run20:47:101
170212793,21sleep017076-21modprobe20:27:090
19887997860,13cyclictest300-21rs:main2
19887997841,8cyclictest181rcu_preempt21:57:272
1987999786,55cyclictest25036-21apt-get21:48:011
19868997861,11cyclictest21628-21munin-node00:12:420
19887997758,11cyclictest22318-21modprobe22:37:082
19887997758,11cyclictest22318-21modprobe22:37:082
19868997762,11cyclictest19859-21cyclictest20:06:260
19868997762,11cyclictest19859-21cyclictest20:06:260
19868997756,14cyclictest20538-21threads22:32:440
19868997756,14cyclictest20538-21threads22:32:440
19879997653,15cyclictest170-21jbd2/mmcblk2p2-823:47:561
19868997663,9cyclictest19859-21cyclictest19:39:450
1989699753,32cyclictest31114-21taskset23:46:133
1989699753,32cyclictest31114-21taskset23:46:133
1989699753,30cyclictest10247-21chrt22:17:083
1989699753,30cyclictest10247-21chrt22:17:083
1986899758,33cyclictest15-21ksoftirqd/023:22:240
19868997560,10cyclictest19859-21cyclictest00:05:180
19868997560,10cyclictest19859-21cyclictest00:05:180
19868997559,9cyclictest16747-21ssh22:27:250
19868997557,13cyclictest26983-21diskmemload23:17:270
19868997557,13cyclictest26983-21diskmemload23:17:270
19868997556,13cyclictest352-21runrttasks20:37:370
19868997554,14cyclictest26783-21latency_hist19:17:110
19868997530,15cyclictest15-21ksoftirqd/021:42:230
221392740,11sleep2371rcuc/219:02:282
1989699743,33cyclictest14270-21chrt20:17:313
19887997456,12cyclictest30276-21/usr/sbin/munin21:02:462
19879997456,9cyclictest0-21swapper/122:47:441
19879997455,13cyclictest2787-21processes22:57:431
19868997460,10cyclictest19859-21cyclictest22:07:380
19868997459,11cyclictest58-21kcompactd019:34:450
19868997456,14cyclictest19859-21cyclictest20:52:310
19868997455,10cyclictest3714-21ssh21:12:120
19868997446,19cyclictest23489-21modprobe20:47:080
19887997351,13cyclictest0-21swapper/220:27:082
19879997355,12cyclictest3533-21cut21:12:101
19879997353,13cyclictest22103-21kworker/u17:3-rpciod22:37:321
19879997342,10cyclictest181rcu_preempt00:08:381
1987999732,32cyclictest32535-21grep19:32:431
19868997358,9cyclictest14236-21rm22:22:360
19868997358,9cyclictest14236-21rm22:22:360
19868997348,17cyclictest8072-21latency_hist00:02:110
19868997342,26cyclictest0-21swapper/000:23:280
19887997252,14cyclictest8403-21switchtime22:12:422
19887997252,14cyclictest8403-21switchtime22:12:422
19887997252,13cyclictest28360-21kworker/u17:3-rpciod00:02:312
19887997252,13cyclictest28360-21kworker/u17:3-rpciod00:02:312
19887997234,7cyclictest181rcu_preempt19:42:322
19879997253,13cyclictest14192-21acpi00:12:191
19868997259,9cyclictest58-21kcompactd020:14:100
19868997259,9cyclictest58-21kcompactd020:11:130
19868997259,9cyclictest58-21kcompactd020:11:130
19868997259,9cyclictest58-21kcompactd019:48:550
19868997256,10cyclictest5004-21ssh23:02:150
19868997256,10cyclictest5004-21ssh23:02:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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