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2025-11-25 - 16:41
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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 rack9slot2.osadl.org (updated Tue Nov 25, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
126942302272,17sleep10-21swapper/11
116902299203,57sleep20-21swapper/22
127482295265,17sleep00-21swapper/00
1314999263259,2cyclictest0-21swapper/22
127712258221,24sleep30-21swapper/33
1313799193188,3cyclictest27823-21strings0
1315199155151,2cyclictest0-21swapper/33
2549521480,3sleep30-21swapper/33
2549521480,3sleep30-21swapper/33
131459910095,3cyclictest0-21swapper/11
301792590,2sleep10-21swapper/11
65612560,1sleep20-21swapper/22
100772420,1sleep20-21swapper/22
100772420,1sleep20-21swapper/22
133762380,1sleep10-21swapper/11
13151993713,4cyclictest28212-21sed3
13151993613,4cyclictest3101-21sed3
13151993513,3cyclictest24627-21idleruntime3
13151993513,3cyclictest24627-21idleruntime3
13151993513,3cyclictest14305-21sed3
13151993513,3cyclictest13845-21grep3
13151993412,3cyclictest32139-21cut3
13151993311,4cyclictest8655-21seq3
13151993310,4cyclictest17965-21awk3
13151993211,4cyclictest2408-21sendmail3
231962310,9sleep335-21ksoftirqd/33
13151993111,3cyclictest665-21runrttasks3
13137992822,4cyclictest8851-21/usr/sbin/munin0
1315199275,4cyclictest0-21swapper/33
1314999250,23cyclictest26451-21kworker/2:22
130772250,4sleep31315199cyclictest3
13149992318,3cyclictest19970-21cut2
13149992312,9cyclictest2758-21which2
13145992314,3cyclictest21-21ksoftirqd/11
13145992314,3cyclictest21-21ksoftirqd/11
255042220,1sleep10-21swapper/11
220242220,2sleep335-21ksoftirqd/33
1315199220,19cyclictest15430-21date3
1314999221,3cyclictest5735-21grep2
1314999221,3cyclictest4506-21latency_hist2
1314999221,18cyclictest5853-21perf2
13149992210,9cyclictest21280-21timerwakeupswit2
1314999220,9cyclictest17373-21perf2
1314999220,19cyclictest2477-21cron2
13145992215,4cyclictest18760-21cat1
13137992215,4cyclictest505-21dbus-daemon0
13137992215,4cyclictest2498-21sendmail0
13137992214,5cyclictest25600-21sed0
13137992214,5cyclictest25600-21sed0
13151992114,4cyclictest25891-21date3
13149992116,3cyclictest9274-21timerandwakeup2
13149992116,3cyclictest31836-21latency2
13149992116,3cyclictest31349-21cut2
13149992116,3cyclictest30705-21df2
13149992115,4cyclictest7177-21gltestperf2
13149992115,4cyclictest2424-21plymouth2
13149992115,4cyclictest22866-21sed2
13149992115,4cyclictest14924-21seq2
13149992115,4cyclictest13058-21cat2
13149992114,4cyclictest19299-21seq2
1314999211,18cyclictest505-21dbus-daemon2
1314999211,18cyclictest19410-21perf2
1314999211,15cyclictest5099-21apt-get2
1314999210,3cyclictest11929-21munin-run2
1314999210,20cyclictest0-21swapper/22
1314599218,3cyclictest111rcu_preempt1
13145992115,4cyclictest24926-21awk1
13145992115,4cyclictest13748-21seq1
13145992114,5cyclictest6979-21ntpq1
13145992114,4cyclictest22514-21seq1
13137992115,4cyclictest23514-21seq0
114122210,4sleep09-21ksoftirqd/00
13151992016,2cyclictest29040-21aten2_r9power_c3
13151992015,3cyclictest8853-21cat3
13151992015,3cyclictest24420-21vmstat3
13151992015,3cyclictest18817-21date3
13151992015,3cyclictest14660-21hostname3
13151992014,4cyclictest7021-21memory3
13151992014,4cyclictest6065-21grep3
13151992014,4cyclictest4760-21sed3
13151992014,4cyclictest16984-21uptime3
13151992014,4cyclictest12328-21sed3
1315199200,17cyclictest15360-21ntpq3
1314999202,16cyclictest8907-21apt2
1314999202,16cyclictest22751-21latency_hist2
13149992015,3cyclictest6094-21uptime2
13149992015,3cyclictest505-21dbus-daemon2
13149992015,3cyclictest21859-21proc_pri2
13149992015,3cyclictest16872-21aten2_r9power_e2
13149992015,3cyclictest11377-21if_enp2s02
13149992014,4cyclictest1660-21sendmail2
13149992014,3cyclictest26097-21grep2
1314999201,2cyclictest9135-21/usr/sbin/munin2
1314999201,17cyclictest30887-21turbostat2
1314999201,17cyclictest26749-1kworker/2:2H2
1314999201,17cyclictest26749-1kworker/2:2H2
1314999200,4cyclictest16293-21perf2
1314999200,1cyclictest0-21swapper/22
1314999200,18cyclictest0-21swapper/22
1314999200,17cyclictest2147-21/usr/sbin/munin2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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