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2026-03-30 - 00:22
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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
Characteristics of the 100 highest latencies:
System rackdslot4.osadl.org (updated Sun Mar 29, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
165432205172,22sleep10-21swapper/107:07:191
138591204170,22phc2sys0-21swapper/307:07:533
167112201167,22sleep00-21swapper/007:09:230
167182200168,21sleep20-21swapper/207:09:292
1832121690,7sleep21725199cyclictest12:35:172
17250996630,7cyclictest25-21ksoftirqd/112:20:171
17250996530,5cyclictest25-21ksoftirqd/109:55:201
17250996527,4cyclictest25-21ksoftirqd/107:25:001
17250996429,7cyclictest25-21ksoftirqd/110:05:201
17250996331,8cyclictest25-21ksoftirqd/107:45:281
17250996331,4cyclictest25-21ksoftirqd/108:55:001
17250996329,4cyclictest25-21ksoftirqd/110:20:231
17250996232,4cyclictest25-21ksoftirqd/107:10:231
17250996227,7cyclictest25-21ksoftirqd/110:15:211
17250996131,8cyclictest25-21ksoftirqd/109:15:171
17250996130,9cyclictest25-21ksoftirqd/108:20:181
17250996130,8cyclictest25-21ksoftirqd/110:35:171
17250996129,4cyclictest25-21ksoftirqd/107:55:191
17250996128,8cyclictest25-21ksoftirqd/107:15:121
17250996128,7cyclictest25-21ksoftirqd/111:20:221
17250996128,6cyclictest25-21ksoftirqd/111:25:131
17250996128,4cyclictest25-21ksoftirqd/111:05:201
17250996128,4cyclictest25-21ksoftirqd/109:05:131
17250996127,8cyclictest25-21ksoftirqd/110:15:001
17250996127,10cyclictest25-21ksoftirqd/109:10:241
17250996126,5cyclictest25-21ksoftirqd/108:05:211
1724999610,20cyclictest25938-21cat07:25:180
1724999610,18cyclictest13567-21cut08:05:190
17250996032,4cyclictest25-21ksoftirqd/109:30:171
17250996031,8cyclictest25-21ksoftirqd/112:35:141
17250996030,9cyclictest25-21ksoftirqd/111:35:271
17250996030,7cyclictest25-21ksoftirqd/109:35:161
17250996030,4cyclictest25-21ksoftirqd/108:30:141
17250996029,8cyclictest25-21ksoftirqd/111:45:241
17250996029,8cyclictest25-21ksoftirqd/108:50:001
17250996029,7cyclictest25-21ksoftirqd/107:50:121
17250996029,7cyclictest25-21ksoftirqd/107:50:121
17250996029,10cyclictest25-21ksoftirqd/110:45:231
17250996028,8cyclictest25-21ksoftirqd/109:50:141
17250996028,4cyclictest25-21ksoftirqd/108:35:151
17250996028,11cyclictest25-21ksoftirqd/112:10:161
17250996027,6cyclictest25-21ksoftirqd/109:40:151
17250996026,4cyclictest25-21ksoftirqd/108:10:121
17250996026,10cyclictest25-21ksoftirqd/110:55:161
17250996020,4cyclictest25-21ksoftirqd/109:25:221
1724999604,18cyclictest19012-21timerandwakeup11:30:280
1724999603,17cyclictest25986-21missed_timers10:40:220
311702590,3sleep30-21swapper/310:50:213
17250995931,7cyclictest25-21ksoftirqd/109:20:221
17250995930,9cyclictest25-21ksoftirqd/111:35:001
17250995930,4cyclictest25-21ksoftirqd/108:40:241
17250995929,9cyclictest25-21ksoftirqd/110:00:221
17250995929,8cyclictest25-21ksoftirqd/107:20:231
17250995929,4cyclictest25-21ksoftirqd/112:15:141
17250995928,8cyclictest25-21ksoftirqd/111:10:131
17250995928,7cyclictest25-21ksoftirqd/111:55:191
17250995928,11cyclictest25-21ksoftirqd/112:25:161
17250995928,10cyclictest25-21ksoftirqd/108:20:001
17250995923,7cyclictest25-21ksoftirqd/111:50:131
17250995922,4cyclictest25-21ksoftirqd/107:40:161
1724999591,20cyclictest29909-21apt-get08:40:010
1724999590,18cyclictest28967-21timerandwakeup07:30:260
25752580,1sleep02578-21sed07:45:000
1725299581,3cyclictest21756-21taskset11:36:003
17250995829,8cyclictest25-21ksoftirqd/109:45:271
17250995829,3cyclictest25-21ksoftirqd/111:40:201
17250995828,7cyclictest25-21ksoftirqd/110:25:141
17250995827,9cyclictest25-21ksoftirqd/110:30:131
17250995827,8cyclictest25-21ksoftirqd/110:40:141
17250995827,4cyclictest25-21ksoftirqd/112:05:151
17250995827,10cyclictest25-21ksoftirqd/111:15:191
17250995827,10cyclictest25-21ksoftirqd/108:00:231
17250995826,7cyclictest25-21ksoftirqd/107:30:191
17250995824,11cyclictest25-21ksoftirqd/108:25:141
17250995821,4cyclictest25-21ksoftirqd/107:35:181
1724999581,25cyclictest5225-21latency_hist08:55:000
1724999581,20cyclictest18876-21/usr/sbin/munin08:15:220
1724999581,17cyclictest26319-21cat09:35:230
1725299570,3cyclictest19559-21taskset10:28:223
17250995728,4cyclictest25-21ksoftirqd/111:00:141
17250995727,8cyclictest25-21ksoftirqd/110:50:141
17250995727,8cyclictest25-21ksoftirqd/108:55:241
17250995725,8cyclictest25-21ksoftirqd/112:30:251
17250995724,10cyclictest25-21ksoftirqd/109:00:151
1724999571,20cyclictest2605-21/usr/sbin/munin12:05:120
1724999570,20cyclictest6966-21/usr/sbin/munin10:00:250
1724999561,21cyclictest1435-21/usr/sbin/munin09:50:230
1724999561,20cyclictest3363-21/usr/sbin/munin07:45:190
1724999560,21cyclictest30702-21/usr/sbin/munin10:50:170
1725299550,3cyclictest17211-21taskset10:24:413
1724999550,21cyclictest13125-21/usr/sbin/munin12:25:160
1724999550,20cyclictest26619-21uptime11:45:280
1724999550,20cyclictest21410-21/usr/sbin/munin08:20:220
17250995422,9cyclictest25-21ksoftirqd/112:00:181
1724999541,19cyclictest31941-21sshd07:39:130
1724999540,27cyclictest22994-21/usr/sbin/munin08:25:140
1724999540,20cyclictest23254-21fschecks_time09:30:150
1724999540,17cyclictest32357-21latency_hist12:00:010
1724999531,20cyclictest29279-21apt-config11:52:370
1724999530,18cyclictest16613-21mailstats08:10:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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