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2026-07-30 - 23:30
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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 Thu Jul 30, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
262539912042,27cyclictest0-21swapper/009:36:110
262539912042,27cyclictest0-21swapper/009:36:110
2579221187,17sleep00-21swapper/006:51:560
2579221187,17sleep00-21swapper/006:51:560
262539910738,21cyclictest25526-21apt-get08:26:100
262709910541,55cyclictest0-21swapper/211:40:592
262539910532,31cyclictest7762-21apt-get10:51:080
262539910417,43cyclictest15352-21latency_hist08:00:590
262709910336,11cyclictest0-21swapper/211:21:272
262709910240,8cyclictest0-21swapper/208:06:372
262709910153,41cyclictest13939-21fschecks_time11:01:182
262709910138,12cyclictest0-21swapper/206:56:142
262709910043,51cyclictest0-21swapper/210:16:292
262709910043,51cyclictest0-21swapper/210:16:292
262539910021,35cyclictest0-21swapper/008:06:220
26270999933,10cyclictest0-21swapper/210:56:192
26270999933,10cyclictest0-21swapper/210:56:192
26253999829,30cyclictest31077-21apt-get10:36:100
26253999829,30cyclictest31077-21apt-get10:36:100
2627099973,40cyclictest15993-21kernelversion08:01:222
26253999712,44cyclictest31713-21ssh09:43:320
2627099963,39cyclictest30306-21fschecks_count07:06:182
26270999628,32cyclictest17233-21tune2fs12:01:182
2627099953,37cyclictest28858-21latency07:01:252
26270999518,33cyclictest18815-21timerwakeupswit09:21:342
26253999528,27cyclictest28103-21apt-get10:31:300
26253999521,33cyclictest0-21swapper/009:06:140
2627099943,41cyclictest5838-21grep09:01:132
2627099942,37cyclictest32243-21fschecks_time08:46:172
26253999420,24cyclictest9361-21ssh10:01:010
26253999420,24cyclictest9361-21ssh10:01:010
247802948,20sleep30-21swapper/306:51:103
247802948,20sleep30-21swapper/306:51:103
13012940,5sleep20-21swapper/208:51:172
2627099934,36cyclictest20001-21if_eth011:11:202
2627099933,37cyclictest12413-21cpu07:51:132
2627099933,36cyclictest5818-21cat11:41:322
2627099933,36cyclictest5818-21cat11:41:322
2627099923,46cyclictest15693-21apt-get10:11:122
2627099923,39cyclictest20909-21/usr/sbin/munin09:26:302
2627099923,38cyclictest31845-21fschecks_time11:31:172
2627099923,38cyclictest31845-21fschecks_time11:31:172
2627099923,34cyclictest14769-21find07:56:322
2627099923,32cyclictest29639-21grep08:36:352
26270999231,9cyclictest0-21swapper/208:36:002
26253999229,27cyclictest857-21apt-get07:16:080
26270999140,10cyclictest298-21in:imuxsock08:19:242
2627099913,35cyclictest30527-21runrttasks09:41:272
2627099913,35cyclictest25898-21ps10:27:232
26270999132,12cyclictest0-21swapper/207:16:182
26270999132,11cyclictest0-21swapper/208:12:352
2625399918,45cyclictest0-21swapper/011:41:060
2625399918,45cyclictest0-21swapper/011:41:060
26253999120,30cyclictest24369-21apt-get10:26:110
26270999072,11cyclictest13045-21sh10:06:252
2627099905,45cyclictest4891-21taskset10:46:252
2627099905,45cyclictest4891-21taskset10:46:252
2627099903,36cyclictest29243-21grep10:31:522
2627099903,35cyclictest26783-21ssh09:36:002
2627099903,35cyclictest13929-21/usr/sbin/munin11:56:262
2627099903,34cyclictest3911-21latency_hist07:26:002
2627099903,33cyclictest6811-21idleruntime09:56:202
2627099903,33cyclictest6811-21idleruntime09:56:202
26253999063,19cyclictest5703-21apt-get07:31:120
26253999027,50cyclictest6864-21unixbench_singl09:01:340
26253999027,38cyclictest0-21swapper/011:11:130
26253999026,25cyclictest27971-21latency_hist07:01:000
26253999021,31cyclictest10173-21/usr/sbin/munin10:01:300
2627099894,35cyclictest352-21runrttasks09:18:122
26270998937,9cyclictest31595-21latency10:36:282
26270998937,9cyclictest31595-21latency10:36:282
2627099892,35cyclictest25330-21latency_hist08:26:002
2627099892,35cyclictest25330-21latency_hist08:26:002
2626299897,60cyclictest15153-21apt-get10:11:141
2626299894,64cyclictest17497-21apt-get08:06:191
26253998911,31cyclictest0-21swapper/011:31:170
26253998911,31cyclictest0-21swapper/011:31:170
2627099883,35cyclictest12133-21modprobe10:05:562
2627099883,34cyclictest31698-21munin-run08:45:572
2627099883,34cyclictest29594-21latency_hist09:41:002
2627099883,34cyclictest29594-21latency_hist09:41:002
26270998827,12cyclictest0-21swapper/210:53:532
2627099882,36cyclictest5515-21latency_hist07:30:592
2627099882,36cyclictest5515-21latency_hist07:30:592
26253998824,26cyclictest3049-21rm10:42:390
26253998823,28cyclictest32331-21sendmail_mailqu07:11:290
26253998818,28cyclictest7042-21apt-get07:36:110
26253998818,28cyclictest7042-21apt-get07:36:110
26253998815,44cyclictest13711-21rm09:13:390
26253998812,28cyclictest0-21swapper/008:51:070
26270998737,10cyclictest541-21cpu09:46:112
2627099873,33cyclictest8928-21latency_hist07:40:592
2627099873,33cyclictest8928-21latency_hist07:40:592
2627099873,33cyclictest22870-21fschecks_time11:16:192
26270998732,32cyclictest10591-21sh09:08:262
26270998731,11cyclictest0-21swapper/211:53:552
26270998731,11cyclictest0-21swapper/211:53:552
26253998725,24cyclictest26075-21fschecks_count12:16:180
26253998721,31cyclictest24615-21/usr/sbin/munin09:31:330
26253998720,43cyclictest4212-21apt-get10:46:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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