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2023-02-02 - 15:50

x86 AMD G-T48L @1400 MHz, Linux 4.4.4-rt11 (Profile)

Latency plot of system in rack #c, slot #3
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 20 highest latencies:
System rackcslot3.osadl.org (updated Thu Feb 02, 2023 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt0-21swapper/112:13:151
147850740irq/31-eth0-tx-945-21usb-storage07:09:561
81730rcu_preempt2453-21/usr/sbin/munin10:33:091
81720rcu_preempt0-21swapper/008:18:200
81700rcu_preempt0-21swapper/012:34:420
81700rcu_preempt0-21swapper/009:58:130
81690rcu_preempt753-21entropy11:28:050
81690rcu_preempt27318-21ssh11:18:080
81690rcu_preempt2157-21snmpd10:23:500
81690rcu_preempt0-21swapper/010:34:490
81680rcu_preempt2894-21diskmemload09:35:270
81680rcu_preempt21643-21diskmemload10:15:450
81680rcu_preempt21643-21diskmemload10:02:560
81680rcu_preempt0-21swapper/011:44:180
81680rcu_preempt0-21swapper/009:31:310
81670rcu_preempt0-21swapper/008:51:320
81650rcu_preempt25604-21ntp_kernel_pll_09:18:170
81650rcu_preempt21281-21ssh11:07:021
23681996546cyclictest945-21usb-storage10:18:401
81640rcu_preempt8097-21ssh09:44:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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