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2026-06-03 - 04:40
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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 Wed Jun 03, 2026 00:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17131212914,87sleep217173-21ls18:55:392
17131212914,87sleep217173-21ls18:55:392
17779212417,70sleep017815-21munin-run18:59:530
17779212417,70sleep017815-21munin-run18:59:530
179379911434,68cyclictest15690-21apt-get20:40:191
17924991133,22cyclictest352-21runrttasks22:06:160
17924991113,48cyclictest22833-21diskstats21:00:480
17924991113,48cyclictest22833-21diskstats21:00:480
17924991093,49cyclictest18550-21ntpq22:41:190
17924991093,49cyclictest18550-21ntpq22:41:190
17924991092,32cyclictest27157-21apt-get22:55:360
17924991084,34cyclictest31851-21fschecks_time21:15:150
17924991083,34cyclictest31245-21cron21:14:520
17924991073,29cyclictest12886-21fschecks_time00:20:170
17924991064,35cyclictest4966-21latency_hist21:24:560
17924991064,35cyclictest4966-21latency_hist21:24:560
179249910622,9cyclictest0-21swapper/023:05:120
17924991054,47cyclictest3877-21fschecks_time00:05:160
17924991054,47cyclictest3877-21fschecks_time00:05:160
17924991054,26cyclictest7946-21/usr/sbin/munin00:10:570
17924991044,28cyclictest9032-21ssh21:30:280
17924991044,27cyclictest5383-21fschecks_time21:25:140
17924991044,27cyclictest14881-21ls22:35:180
179249910441,56cyclictest0-21swapper/021:45:140
179249910441,56cyclictest0-21swapper/021:45:140
17924991043,42cyclictest27027-21apt-key22:54:560
17924991043,36cyclictest23749-21mailstats21:55:260
17924991043,36cyclictest23749-21mailstats21:55:260
17924991042,27cyclictest19041-21awk23:35:250
17924991034,21cyclictest26820-21modprobe23:49:520
17924991033,25cyclictest23439-21awk22:49:520
17924991033,25cyclictest23439-21awk22:49:520
17924991032,27cyclictest1180-21fschecks_time19:55:170
179249910319,11cyclictest0-21swapper/022:10:220
17924991023,34cyclictest466-21latency_hist23:59:550
17924991023,34cyclictest466-21latency_hist23:59:550
17924991023,24cyclictest12449-21taskset21:36:180
17924991022,38cyclictest22234-21ssh21:53:360
17924991022,34cyclictest18120-21sh23:34:550
17924991022,34cyclictest18120-21sh23:34:550
17924991022,22cyclictest20824-21cpu19:10:040
17924991013,22cyclictest15188-21latency_hist20:39:560
17924991013,22cyclictest15188-21latency_hist20:39:560
17924991004,33cyclictest5615-21latency_hist20:09:550
17924991004,32cyclictest15940-21cut20:41:110
179249910024,23cyclictest19282-21uname20:50:180
17924991002,32cyclictest5367-21taskset22:19:560
17924991002,32cyclictest5367-21taskset22:19:560
1792499994,32cyclictest32025-21grep19:50:150
17924999934,58cyclictest27684-21threads19:35:270
17924999934,58cyclictest27684-21threads19:35:270
1792499993,35cyclictest5997-21/usr/sbin/munin22:20:190
1792499993,34cyclictest16626-21sed00:25:300
1792499993,34cyclictest16626-21sed00:25:300
1792499993,29cyclictest17545-21tune2fs20:45:120
1792499993,29cyclictest17545-21tune2fs20:45:120
1792499992,35cyclictest16833-21latency_hist21:44:550
1792499992,33cyclictest21055-21ntp_kernel_pll_20:55:210
1792499992,33cyclictest21055-21ntp_kernel_pll_20:55:210
1792499992,21cyclictest3728-21sh23:10:110
1792499992,20cyclictest7147-21proc_pri23:15:240
1792499984,33cyclictest8980-21/usr/sbin/munin20:20:140
1792499984,33cyclictest8980-21/usr/sbin/munin20:20:140
1792499984,32cyclictest32696-21modprobe23:04:510
1792499983,39cyclictest25104-21apt-get21:05:070
1792499983,32cyclictest31059-21grep19:45:290
1792499983,30cyclictest352-21runrttasks00:01:250
1792499983,19cyclictest12745-21/usr/sbin/munin20:30:210
1792499982,37cyclictest8312-21awk20:15:280
1792499982,37cyclictest8312-21awk20:15:280
1792499982,37cyclictest26666-21latency_hist19:34:560
17944999759,13cyclictest181rcu_preempt21:45:202
17944999759,13cyclictest181rcu_preempt21:45:202
17924999740,50cyclictest0-21swapper/020:00:250
1792499973,35cyclictest30043-21latency_hist19:44:550
1792499973,35cyclictest30043-21latency_hist19:44:550
1792499973,31cyclictest6359-21ps20:10:240
1792499973,31cyclictest6359-21ps20:10:240
17924999728,9cyclictest0-21swapper/019:00:160
1792499972,32cyclictest21472-21grep23:40:140
1792499972,25cyclictest8636-21sh22:25:110
1792499972,25cyclictest8636-21sh22:25:110
1792499964,31cyclictest29919-21latency_hist23:54:540
1792499964,31cyclictest11261-21mailstats20:25:260
1792499964,22cyclictest23260-21fschecks_count19:20:100
1792499964,22cyclictest13123-21ssh22:32:070
1792499963,37cyclictest25930-21runrttasks21:59:560
1792499963,32cyclictest352-21runrttasks23:24:230
17944999539,20cyclictest181rcu_preempt22:41:282
17944999539,20cyclictest181rcu_preempt22:41:282
1792499953,32cyclictest10482-21switchtime00:15:280
1792499952,33cyclictest19767-21timerandwakeup19:04:580
17944999372,8cyclictest181rcu_preempt20:08:122
1792499933,25cyclictest12386-21runrttasks23:25:040
17937999136,29cyclictest0-21swapper/120:15:131
17937999136,29cyclictest0-21swapper/120:15:131
17937999130,25cyclictest12787-21ssh00:20:121
1792499913,33cyclictest22912-21latency_hist19:19:550
1792499909,13cyclictest250652chrt19:29:530
17937998939,44cyclictest0-21swapper/123:45:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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