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2026-04-11 - 02:58
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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 Sat Apr 11, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1811521240,12sleep00-21swapper/019:03:300
18174991238,89cyclictest22523-21apt-get22:43:412
1758821099,67sleep217672-21/usr/sbin/munin18:59:132
181599910731,67cyclictest26166-21ssh21:03:440
181599910731,67cyclictest26166-21ssh21:03:440
181599910459,37cyclictest30442-21apt-get22:03:350
181599910336,29cyclictest23427-21sendmail-msp00:33:250
181599910334,38cyclictest5860-21rm22:16:040
181709910240,12cyclictest0-21swapper/123:03:331
181709910233,11cyclictest0-21swapper/121:44:001
181709910233,11cyclictest0-21swapper/121:44:001
181599910272,20cyclictest21988-21apt-get22:43:410
181709910137,11cyclictest0-21swapper/100:13:571
18159999935,23cyclictest21603-21sed20:49:010
18159999837,26cyclictest13264-21apt-get22:28:550
18159999834,20cyclictest0-21swapper/020:54:260
1817499973,64cyclictest0-21swapper/221:19:022
1817499973,64cyclictest0-21swapper/221:19:022
1817099974,39cyclictest5107-21ssh23:08:371
18170999738,9cyclictest0-21swapper/121:15:241
18170999738,8cyclictest0-21swapper/100:03:281
18170999734,9cyclictest0-21swapper/123:23:431
1817099973,39cyclictest28779-21ssh22:53:471
1817099973,39cyclictest28779-21ssh22:53:471
18170999733,11cyclictest0-21swapper/100:08:421
18159999732,25cyclictest21405-21chrt23:34:310
18159999726,42cyclictest0-21swapper/022:51:470
18170999643,11cyclictest0-21swapper/122:49:111
18170999639,11cyclictest0-21swapper/120:48:461
1817099962,37cyclictest30548-21fschecks_time19:38:481
18159999635,20cyclictest16646-21sed20:34:010
178022968,59sleep117803-21sendmail-mta19:00:471
18170999535,12cyclictest0-21swapper/123:44:071
1817099953,40cyclictest2431-21latency_hist23:58:271
18170999532,12cyclictest0-21swapper/120:58:471
18170999532,12cyclictest0-21swapper/120:58:471
18159999563,22cyclictest1068-21apt-get19:48:400
18159999529,37cyclictest0-21swapper/021:17:010
1817099943,37cyclictest16587-21wc20:34:001
1817099942,39cyclictest13025-21apt-key22:28:291
18159999432,25cyclictest4295-21rm23:07:050
18159999431,24cyclictest10268-21fschecks_count22:23:470
18159999431,23cyclictest11861-21timerwakeupswit20:19:010
18159999424,22cyclictest0-21swapper/019:18:510
1817099934,38cyclictest352-21runrttasks00:07:581
18159999334,20cyclictest18176-21sed20:38:590
18159999333,53cyclictest30234-21cat22:03:270
18159999332,18cyclictest25573-21diskmemload23:49:110
18159999332,18cyclictest25573-21diskmemload23:49:110
18159999329,25cyclictest0-21swapper/000:18:590
1817099924,41cyclictest22810-21latency_hist23:38:281
1817099923,45cyclictest3278-21wc19:53:581
18159999263,20cyclictest24172-21apt-get20:58:380
18159999263,20cyclictest24172-21apt-get20:58:380
18159999235,26cyclictest25873-21latency_hist23:43:270
18159999234,21cyclictest18385-21runrttasks21:43:350
18159999234,21cyclictest18385-21runrttasks21:43:350
18159999232,24cyclictest12325-21ssh00:13:550
1817099915,32cyclictest2410-21latency_hist19:53:291
18170999149,37cyclictest18148-21cyclictest22:06:371
1817099913,34cyclictest28628-21latency_hist19:33:301
18159999162,19cyclictest29119-21apt-get21:08:380
18159999134,45cyclictest9301-21apt-get21:29:110
18159999134,45cyclictest9301-21apt-get21:29:110
1817099905,36cyclictest30618-21taskset23:50:091
1817099905,36cyclictest30618-21taskset23:50:091
18170999038,13cyclictest352-21runrttasks22:44:161
1817099903,37cyclictest14969-21fschecks_count00:18:471
1817099903,35cyclictest11228-21fschecks_time20:18:471
18159999034,24cyclictest3727-21sendmail22:13:260
18159999033,18cyclictest16874-21sh21:40:040
18159999031,25cyclictest19486-21sh00:25:560
18174998948,35cyclictest7800-21munin-run23:13:262
1817499892,59cyclictest23530-21taskset19:18:282
1817499892,59cyclictest23530-21taskset19:18:282
18170998944,11cyclictest11363-21fschecks_count23:18:471
18170998944,11cyclictest11363-21fschecks_count23:18:471
1817099893,38cyclictest13244-21/usr/sbin/munin22:29:241
1817099893,36cyclictest29511-21awk19:34:371
1817099892,41cyclictest2906-21/usr/sbin/munin21:18:361
1817099892,41cyclictest2906-21/usr/sbin/munin21:18:361
18159998959,22cyclictest25573-21diskmemload23:59:020
18159998952,26cyclictest31542-21apt-get22:58:370
18159998948,27cyclictest5097-21apt-get23:08:400
18159998936,33cyclictest6040-21sort00:03:490
18159998931,18cyclictest14983-21timerandwakeup23:24:010
18159998930,25cyclictest352-21runrttasks21:57:180
18159998930,25cyclictest352-21runrttasks21:57:180
18159998924,33cyclictest7761-21apt-get20:08:380
1817499884,72cyclictest0-21swapper/219:03:392
1817499883,70cyclictest0-21swapper/221:48:412
1817099883,37cyclictest352-21runrttasks22:59:311
1817099883,34cyclictest24093-21latency_hist21:53:291
18159998869,10cyclictest18341-21apt-get19:03:390
18159998861,19cyclictest7297-21sh21:24:590
18159998861,19cyclictest7297-21sh21:24:590
18159998855,21cyclictest9404-21apt-get20:13:400
18159998835,28cyclictest19580-21ntpq20:43:520
18159998833,18cyclictest4944-21ssh21:21:360
18159998833,18cyclictest4944-21ssh21:21:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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