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2023-10-05 - 00:41
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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 (updated Wed Oct 04, 2023 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
252712282206,40sleep30-21swapper/33
252082264177,50sleep00-21swapper/00
252502253215,25sleep20-21swapper/22
250882248181,55sleep10-21swapper/11
95362510,3sleep00-21swapper/00
213202500,5sleep221325-21sed2
173442500,3sleep10-21swapper/11
321802480,1sleep20-21swapper/22
166722440,2sleep20-21swapper/22
226172430,2sleep30-21swapper/33
25509993515,17cyclictest12265-21cron2
251632250,1sleep00-21swapper/00
251632250,1sleep00-21swapper/00
82322240,2sleep30-21swapper/33
25513992416,5cyclictest665-21runrttasks3
2550999243,18cyclictest7397-21idleruntime-cro2
2550999241,20cyclictest16300-21munin-run2
25498992416,5cyclictest20230-21cron0
163322240,9sleep228-21ksoftirqd/22
2550999231,19cyclictest8225-21apt-get2
2550999231,19cyclictest14209-21munin-run2
25498992316,4cyclictest17798-21dump-pmu-power0
2551399220,8cyclictest173472unixbench_multi3
2550999228,11cyclictest6156-21grep2
2550999221,4cyclictest31839-21perf2
2550999221,3cyclictest9757-21munin-run2
2550999221,3cyclictest26621-21munin-run2
2550999221,3cyclictest14268-21munin-run2
25509992210,2cyclictest28-21ksoftirqd/22
2549899224,6cyclictest665-21runrttasks0
25498992215,5cyclictest2082-21systemd-journal0
25498992215,4cyclictest30030-21sh0
25498992215,3cyclictest28270-21idleruntime-cro0
25513992115,3cyclictest5659-21timerwakeupswit3
25513992115,3cyclictest12565-21cut3
25513992114,4cyclictest665-21runrttasks3
25513992113,4cyclictest505-21dbus-daemon3
2550999213,12cyclictest436-21apt-get2
25509992116,3cyclictest5749-21perf2
2550999211,18cyclictest15756-21dump-pmu-power2
2550999211,17cyclictest5626-21munin-run2
2550999210,4cyclictest30156-21date2
2550999210,3cyclictest7815-21apt-config2
2550999210,18cyclictest28614-21cron2
2550999210,18cyclictest28614-21cron2
2550999210,18cyclictest22399-21apt-config2
25504992115,4cyclictest3380-21sh1
2549899218,10cyclictest31437-21sed0
2549899211,7cyclictest0-21swapper/00
25498992114,4cyclictest2082-21systemd-journal0
25498992113,5cyclictest505-21dbus-daemon0
2551399202,15cyclictest23069-21taskset3
25513992015,3cyclictest31082-21sed3
25513992014,4cyclictest18359-21sed3
25513992014,4cyclictest11815-21sed3
25513992014,3cyclictest24189-21aten2.4-expect3
25513992014,3cyclictest19360-21grep3
25513992013,4cyclictest29815-21idleruntime-cro3
25513992013,4cyclictest13335-21grep3
25513992012,5cyclictest15423-21pmu-power3
25513992012,4cyclictest14067-21aten2.4-expect3
2550999202,17cyclictest20308-21awk2
2550999202,16cyclictest4186-21latency_hist2
25509992015,3cyclictest3023-21timerandwakeup2
25509992015,3cyclictest29639-21threads2
25509992015,3cyclictest29430-21idleruntime2
25509992015,3cyclictest22710-21cpuspeed2
25509992015,3cyclictest22152-21aten2_r9power_p2
25509992015,3cyclictest20293-21/usr/sbin/munin2
25509992015,3cyclictest17017-21proc_pri2
25509992015,3cyclictest10001-21/usr/sbin/munin2
25509992014,4cyclictest8073-21seq2
25509992014,4cyclictest27696-21seq2
25509992014,4cyclictest20073-21seq2
2550999201,3cyclictest19810-21gpgv2
2550999201,3cyclictest13700-21cron2
2550999201,2cyclictest111rcu_preempt2
2550999201,17cyclictest3388-21perf2
2550999201,17cyclictest0-21swapper/22
2550999200,3cyclictest13780-21perf2
2550999200,3cyclictest12272-21date2
2550999200,17cyclictest27484-21grep2
25504992016,2cyclictest32329-21/usr/sbin/munin1
25504992015,3cyclictest30893-21/usr/sbin/munin1
25504992015,3cyclictest24314-21acpi1
25504992015,3cyclictest20725-21cpuspeed_turbos1
25504992015,3cyclictest20537-21/usr/sbin/munin1
25504992015,3cyclictest18380-21ls1
25504992015,3cyclictest10001-21/usr/sbin/munin1
25504992014,4cyclictest31243-21awk1
25504992014,4cyclictest21821-21seq1
25504992014,4cyclictest18288-21cat1
25504992014,4cyclictest10415-21cat1
25504992013,4cyclictest25319-21cat1
25504992013,4cyclictest25319-21cat1
25504992011,5cyclictest14566-21apt-get1
25498992015,3cyclictest28141-21wc0
25498992015,3cyclictest20471-21sh0
25498992015,3cyclictest14448-21latency_hist0
25498992014,4cyclictest30946-21cat0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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