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2025-08-27 - 14:36
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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
Characteristics of the 100 highest latencies:
System rackdslot2.osadl.org (updated Wed Aug 27, 2025 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137391233168,22phc2sys0-21swapper/319:08:063
80772205172,22sleep20-21swapper/219:07:162
79752205173,22sleep00-21swapper/019:06:070
79962204172,21sleep10-21swapper/119:06:241
137391148125,12phc2sys0-21swapper/319:10:013
1372911040,1ptp4l8800-21latency_hist23:40:003
137291890,1ptp4l18387-21sendmail_mailqu20:35:303
137291810,2ptp4l391rcuc/300:10:223
858099640,23cyclictest26813-21cstates20:55:140
858099590,25cyclictest1945-21awk23:25:210
858399575,16cyclictest12488-21/usr/sbin/munin22:40:343
858399566,10cyclictest5947-21iwlist22:25:193
858399545,12cyclictest14870-21sed23:50:203
858399543,11cyclictest12042-21missed_timers19:15:223
858399534,17cyclictest414-21dbus-daemon22:05:263
858399534,17cyclictest0-21swapper/320:00:203
858399525,11cyclictest12924-21sed23:45:333
858399524,15cyclictest13131-21taskset21:31:423
858399504,14cyclictest1251-21perl00:30:183
858399496,9cyclictest9917-21cat20:20:163
858399495,10cyclictest15016-21timerwakeupswit19:20:273
858399485,17cyclictest4163-21/usr/sbin/munin23:30:183
858299485,3cyclictest33-21ksoftirqd/220:39:592
858399465,16cyclictest1314-21snmpd00:05:383
858399464,17cyclictest13909-21/usr/sbin/munin21:35:173
858399463,13cyclictest6459-21ls20:10:303
137291450,1ptp4l0-21swapper/322:54:283
858399443,6cyclictest9936-21meminfo21:25:223
858399443,14cyclictest20251-21ls21:45:263
858399443,14cyclictest19202-21memory19:30:233
858399443,13cyclictest25187-21ls20:50:213
858399443,12cyclictest22116-21ls19:35:283
858399433,6cyclictest2987-21apt-get22:20:153
858399433,13cyclictest16233-21ls20:30:273
858399425,17cyclictest2494-21gnome-shell19:50:583
8582994230,3cyclictest33-21ksoftirqd/221:20:142
137291420,0ptp4l401ktimersoftd/320:57:263
858399413,17cyclictest1100-21if_enp4s022:15:193
858399413,14cyclictest31721-21irqstats00:25:213
858399413,13cyclictest15947-21meminfo22:45:213
8582994136,3cyclictest33-21ksoftirqd/221:00:002
137291410,0ptp4l401ktimersoftd/323:23:583
137291410,0ptp4l401ktimersoftd/323:18:443
137291410,0ptp4l401ktimersoftd/320:17:063
858399404,12cyclictest24997-21ls21:55:283
858399403,17cyclictest23391-21latency_hist21:55:003
8582994034,3cyclictest33-21ksoftirqd/221:30:002
8582994034,3cyclictest33-21ksoftirqd/220:34:592
137291400,0ptp4l401ktimersoftd/321:20:193
137291400,0ptp4l401ktimersoftd/319:25:353
858399397,18cyclictest20918-21latency_hist00:05:003
858399394,17cyclictest16317-21apt-get21:40:163
858399393,9cyclictest27666-21latency_hist19:50:003
858399393,8cyclictest3799-21ps20:05:263
8580993934,3cyclictest9-21ksoftirqd/020:15:010
8580993933,4cyclictest27468-21cron19:50:010
137291390,0ptp4l401ktimersoftd/321:15:203
858399384,14cyclictest29533-21diskstats21:00:173
8583993827,9cyclictest41-21ksoftirqd/322:39:473
8582993833,3cyclictest33-21ksoftirqd/223:30:012
8582993833,3cyclictest33-21ksoftirqd/221:40:012
8582993733,3cyclictest33-21ksoftirqd/219:20:012
8582993733,2cyclictest33-21ksoftirqd/221:10:192
8582993733,2cyclictest33-21ksoftirqd/220:25:002
8582993732,3cyclictest33-21ksoftirqd/223:50:012
8582993732,3cyclictest33-21ksoftirqd/220:09:592
8582993731,4cyclictest33-21ksoftirqd/200:18:472
8582993731,3cyclictest33-21ksoftirqd/220:55:002
8580993731,4cyclictest9-21ksoftirqd/022:03:590
8580993712,22cyclictest12477-21grep20:25:160
8583993630,4cyclictest41-21ksoftirqd/321:06:043
8582993632,3cyclictest33-21ksoftirqd/221:05:162
8582993631,3cyclictest33-21ksoftirqd/219:55:202
8582993631,3cyclictest33-21ksoftirqd/219:34:592
8582993630,3cyclictest33-21ksoftirqd/221:00:212
8582993630,3cyclictest33-21ksoftirqd/219:20:202
8582993629,5cyclictest33-21ksoftirqd/200:00:032
8581993631,3cyclictest25-21ksoftirqd/100:40:001
8581993630,4cyclictest25-21ksoftirqd/122:20:011
8580993631,3cyclictest5111-21idleruntime-cro22:25:000
8580993630,4cyclictest9-21ksoftirqd/020:31:590
8580993630,4cyclictest9-21ksoftirqd/019:10:100
8580993629,4cyclictest9-21ksoftirqd/000:05:010
8580993613,20cyclictest32710-21wc22:15:000
8580993612,21cyclictest24853-21sshd19:41:550
8583993529,4cyclictest41-21ksoftirqd/319:40:103
8582993531,2cyclictest33-21ksoftirqd/222:25:002
8582993530,3cyclictest33-21ksoftirqd/220:20:012
8582993530,3cyclictest33-21ksoftirqd/219:40:002
8582993530,3cyclictest33-21ksoftirqd/219:25:202
8582993530,3cyclictest33-21ksoftirqd/200:20:192
8582993529,4cyclictest33-21ksoftirqd/221:46:392
8582993528,5cyclictest33-21ksoftirqd/222:19:002
8582993522,11cyclictest33-21ksoftirqd/220:15:012
8581993529,4cyclictest25-21ksoftirqd/123:36:021
8581993529,4cyclictest25-21ksoftirqd/120:11:261
8581993529,4cyclictest25-21ksoftirqd/100:24:321
8581993529,4cyclictest25-21ksoftirqd/100:10:081
8580993529,4cyclictest9-21ksoftirqd/023:16:190
8580993529,4cyclictest9-21ksoftirqd/023:07:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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