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2019-07-24 - 00:28

Intel(R) Xeon(TM) CPU @ 2.00GHz, Linux 2.6.33.7.2-rt30-32 (Profile)

Latency plot of system in rack #b, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -n -a0 -t1 -p99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
The worst-case latency is NOT higher under extreme CPU load.
Results of all systems under extreme CPU load are combined on this summary graph.
Characteristics of the 20 highest latencies:
System rackbslot5.osadl.org (updated Tue Jul 23, 2019 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7650450irq/16-uhci_hcd420279ShbNDf690894009:03:211
7650430irq/16-uhci_hcd420279ShbNDf690894012:03:061
7650430irq/16-uhci_hcd420279ShbNDf690894008:53:191
7650430irq/16-uhci_hcd420279ShbNDf690894007:13:311
7650430irq/16-uhci_hcd420279ShbNDf690894007:13:311
7650400irq/16-uhci_hcd420279ShbNDf690894011:33:131
7650380irq/16-uhci_hcd420279ShbNDf690894008:43:221
7650380irq/16-uhci_hcd420279ShbNDf690894008:08:261
7650380irq/16-uhci_hcd420279ShbNDf690894007:28:351
7650380irq/16-uhci_hcd420279ShbNDf690894006:48:331
7650370irq/16-uhci_hcd420279ShbNDf690894010:48:241
7650370irq/16-uhci_hcd420279ShbNDf690894008:33:241
7650370irq/16-uhci_hcd420279ShbNDf690894007:43:301
7650370irq/16-uhci_hcd420279ShbNDf690894007:18:301
7650340irq/16-uhci_hcd420279ShbNDf690894010:18:201
7650300irq/16-uhci_hcd420279ShbNDf690894007:58:281
7650300irq/16-uhci_hcd420279ShbNDf690894006:58:361
545992511cyclictest0-21swapper10:48:400
545992421cyclictest0-21swapper11:08:020
545992421cyclictest0-21swapper08:18:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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