You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-06-07 - 10:38

x86 Intel Core i7-X980 @3333 MHz, Linux 3.12.31-rt45 (Profile)

Latency plot of system in rack #3, slot #3
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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
Characteristics of the 50 highest latencies:
System rack3slot3.osadl.org (updated Wed Jun 07, 2023 00:46:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9899210893sleep00-21swapper/019:06:240
122501080irq/42-ahci0-21swapper/319:09:035
9958210694sleep80-21swapper/819:07:0810
122501000irq/42-ahci0-21swapper/119:09:381
884350940irq/52-eth0-rx-0-21swapper/1119:06:023
884350920irq/52-eth0-rx-0-21swapper/219:05:184
884350880irq/52-eth0-rx-0-21swapper/519:05:267
12250880irq/42-ahci0-21swapper/419:08:166
1021228479sleep70-21swapper/719:09:559
990728169sleep60-21swapper/619:06:308
12250700irq/42-ahci0-21swapper/1019:08:222
1018826462sleep90-21swapper/919:09:3311
1033799360cyclictest0-21swapper/021:12:460
1033799340cyclictest0-21swapper/019:28:090
1033799320cyclictest0-21swapper/020:15:170
1037699290cyclictest0-21swapper/1122:15:483
1037699290cyclictest0-21swapper/1121:20:353
173350280irq/56-eth1-rx-0-21swapper/119:28:071
12250280irq/42-ahci0-21swapper/219:28:074
10373992725cyclictest13450irq/18-ehci_hcd21:12:4610
10362992721cyclictest884450irq/53-eth0-tx-21:12:466
10373992516cyclictest18927-21perl22:15:1810
10376992220cyclictest0-21swapper/1122:09:563
10376992014cyclictest0-21swapper/1120:19:113
1037399208cyclictest12250irq/42-ahci23:25:0010
10337992018cyclictest0-21swapper/022:08:230
1037399195cyclictest0-21swapper/823:32:5510
1037399195cyclictest0-21swapper/819:46:5210
1037399195cyclictest0-21swapper/819:46:5210
1036699195cyclictest0-21swapper/721:55:249
1699180watchdog/00-21swapper/021:09:290
1037599181cyclictest884450irq/53-eth0-tx-20:47:352
1037599181cyclictest831ksoftirqd/1023:07:162
1037599181cyclictest831ksoftirqd/1022:00:312
1037599181cyclictest270932chrt20:59:342
1037599181cyclictest12250irq/42-ahci22:08:252
1037599181cyclictest12250irq/42-ahci21:18:472
1037599181cyclictest12250irq/42-ahci21:08:562
1037599181cyclictest112072chrt00:18:562
1037599180cyclictest12250irq/42-ahci20:08:552
1037499184cyclictest0-21swapper/921:20:3811
1037499181cyclictest13001-1kworker/9:2H21:58:1311
1037499181cyclictest13001-1kworker/9:2H21:10:4611
1037499181cyclictest0-21swapper/921:50:1711
1037399184cyclictest0-21swapper/819:10:0110
10373991816cyclictest8149-21snmp_rack3slot922:45:1810
10373991816cyclictest5018-21snmp_rack3slot922:40:2210
10373991816cyclictest4712-21iostat21:55:2310
10373991816cyclictest3659-21users00:05:3710
10373991816cyclictest3299-21perl20:25:1910
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional