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2025-12-02 - 18:34
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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 rackdslot1.osadl.org (updated Tue Dec 02, 2025 12:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191670,3ptp4l13926-21/usr/sbin/munin07:15:131
2847191630,4ptp4l0-21swapper/107:25:201
2847191620,5ptp4l0-21swapper/307:05:103
2847191620,4ptp4l0-21swapper/107:20:261
2847191600,4ptp4l0-21swapper/108:05:191
2847191600,3ptp4l0-21swapper/107:58:311
2847191580,4ptp4l0-21swapper/212:20:292
2847191570,3ptp4l0-21swapper/207:27:192
2847191570,18ptp4l0-21swapper/107:08:461
2847191560,5ptp4l0-21swapper/207:06:462
2847191560,3ptp4l0-21swapper/110:20:161
2847191560,3ptp4l0-21swapper/109:12:121
2847191550,4ptp4l0-21swapper/112:08:171
2847191550,4ptp4l0-21swapper/112:08:171
2847191550,3ptp4l0-21swapper/309:49:483
2847191550,3ptp4l0-21swapper/008:49:350
2847191540,3ptp4l0-21swapper/012:30:290
2847191540,3ptp4l0-21swapper/011:14:280
2847191530,4ptp4l0-21swapper/110:59:491
2847191530,4ptp4l0-21swapper/109:03:001
2847191530,4ptp4l0-21swapper/108:41:271
2847191530,4ptp4l0-21swapper/108:12:531
2847191530,3ptp4l0-21swapper/008:55:350
2847191530,3ptp4l0-21swapper/008:18:130
2847191520,4ptp4l0-21swapper/312:15:563
2847191520,4ptp4l0-21swapper/010:46:080
2847191520,4ptp4l0-21swapper/009:37:030
2847191520,3ptp4l0-21swapper/007:20:190
2847191510,4ptp4l0-21swapper/110:19:041
2847191510,4ptp4l0-21swapper/108:49:121
2847191510,4ptp4l0-21swapper/108:27:181
2847191510,4ptp4l0-21swapper/107:12:571
2847191510,11ptp4l0-21swapper/111:34:231
2847191510,11ptp4l0-21swapper/108:01:341
2847191500,4ptp4l0-21swapper/111:38:371
2847191500,4ptp4l0-21swapper/111:14:411
2847191500,4ptp4l0-21swapper/109:26:531
2847191500,4ptp4l0-21swapper/109:23:091
2847191500,3ptp4l0-21swapper/107:46:041
2847191500,3ptp4l0-21swapper/011:28:280
2847191490,4ptp4l0-21swapper/111:58:181
2847191490,4ptp4l0-21swapper/108:20:521
2847191480,9ptp4l0-21swapper/010:36:390
2847191480,4ptp4l0-21swapper/110:30:501
2847191480,3ptp4l0-21swapper/108:36:101
2847191480,2ptp4l0-21swapper/007:35:160
2847191470,4ptp4l0-21swapper/108:59:201
2847191470,3ptp4l0-21swapper/110:08:471
2847191460,4ptp4l0-21swapper/209:02:502
2847191460,4ptp4l0-21swapper/111:15:391
2847191460,4ptp4l0-21swapper/109:54:491
2847191460,3ptp4l0-21swapper/009:59:560
2847191450,9ptp4l101ktimersoftd/008:10:270
2847191450,5ptp4l0-21swapper/312:20:143
2847191450,4ptp4l0-21swapper/009:25:330
2847191450,3ptp4l18514-21ls12:00:201
2847191450,2ptp4l0-21swapper/112:13:211
2847191450,2ptp4l0-21swapper/109:30:351
2847191440,4ptp4l18592-21apt-get07:25:130
2847191440,4ptp4l0-21swapper/109:40:021
2847191440,4ptp4l0-21swapper/109:18:431
2847191440,4ptp4l0-21swapper/109:09:051
2847191440,10ptp4l0-21swapper/211:02:592
2847191440,10ptp4l0-21swapper/208:43:462
2847191430,9ptp4l0-21swapper/208:11:272
2847191430,4ptp4l29666-21memory11:15:210
2847191430,4ptp4l24080-21apt-get11:05:143
2847191430,4ptp4l0-21swapper/107:50:021
2847191430,4ptp4l0-21swapper/007:16:270
2847191430,3ptp4l26336-21iostat07:40:180
2847191430,3ptp4l26336-21iostat07:40:180
2847191430,11ptp4l0-21swapper/107:40:551
2847191430,11ptp4l0-21swapper/107:40:551
1138199430,10cyclictest6129-21ntp_states08:05:272
2849491420,10getstats0-21swapper/107:34:501
2847191420,9ptp4l0-21swapper/009:53:350
2847191420,8ptp4l0-21swapper/309:29:203
2847191420,8ptp4l0-21swapper/209:20:382
2847191420,5ptp4l20831-21ls12:05:240
2847191420,5ptp4l20831-21ls12:05:230
2847191420,5ptp4l0-21swapper/008:20:140
2847191420,5ptp4l0-21swapper/007:08:040
2847191420,4ptp4l2682-21users11:25:271
2847191420,4ptp4l21973-21df11:00:161
2847191420,4ptp4l21701-21hddtemp_smartct08:40:170
2847191420,4ptp4l0-21swapper/112:35:051
2847191420,4ptp4l0-21swapper/010:50:220
2847191420,3ptp4l16938-21diskstats08:30:151
2847191420,3ptp4l12000-21iostat_ios07:10:170
2849491410,10getstats0-21swapper/110:41:521
2847191410,8ptp4l0-21swapper/211:47:522
2847191410,5ptp4l5881-21kernelversion08:05:230
2847191410,5ptp4l0-21swapper/310:57:243
2847191410,5ptp4l0-21swapper/209:30:122
2847191410,5ptp4l0-21swapper/207:35:142
2847191410,5ptp4l0-21swapper/012:23:190
2847191410,5ptp4l0-21swapper/007:45:180
2847191410,4ptp4l9185-21users09:20:290
2847191410,4ptp4l18257-21ntp_states10:50:231
2847191410,4ptp4l14193-21latency_hist08:25:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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