You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-10-14 - 14:47
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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
Characteristics of the 50 highest latencies:
System rackcslot2.osadl.org (updated Tue Oct 14, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1061727157,9sleep10-21swapper/119:04:401
1041126855,8sleep00-21swapper/019:02:310
247122610,0sleep10-21swapper/123:18:581
1102699378,6cyclictest91rcu_preempt23:14:081
11025993617,18cyclictest0-21swapper/000:20:060
11026993530,3cyclictest30395-21forks23:27:171
11026993431,2cyclictest29026-21apache_accesses21:17:151
11026993430,3cyclictest8288-21ssh23:40:451
11026993430,3cyclictest25592-21if_eth121:12:141
11026993429,3cyclictest3914-21ssh22:08:001
11026993410,4cyclictest91rcu_preempt21:23:291
11026993331,1cyclictest20971-21apache_processe22:32:131
11026993330,2cyclictest20923-21ssh23:57:191
11026993330,2cyclictest168-21systemd-journal23:12:021
11026993232,0cyclictest0-21swapper/122:58:251
11026993229,2cyclictest9351-21cut23:42:131
11026993229,2cyclictest7253-21ntp_states00:22:201
11026993229,2cyclictest28340-21latency_hist19:52:021
11026993229,2cyclictest2544-21perf00:17:021
11026993229,2cyclictest24545-21apache_volume19:42:171
11026993229,2cyclictest23735-21ssh21:09:501
11026993229,2cyclictest23555-21fschecks_time21:52:161
11026993229,2cyclictest22111-21diskmemload22:05:371
11026993229,2cyclictest21702-21python19:32:231
11026993229,2cyclictest20448-21pidof19:31:221
11026993229,2cyclictest12794-21ssh00:29:451
11026993229,2cyclictest11339-21apache_volume20:32:161
11026993229,2cyclictest10395-21sendmail_mailtr20:27:221
11026993228,3cyclictest27200-21missed_timers23:22:191
11026993228,3cyclictest0-21swapper/122:18:191
11026993210,4cyclictest0-21swapper/121:37:071
11026993210,17cyclictest0-21swapper/122:49:031
11026993129,2cyclictest4758-21ssh00:18:451
11026993128,2cyclictest6266-21df_inode22:12:171
11026993128,2cyclictest4927-21sed20:12:231
11026993128,2cyclictest32092-21latency_hist20:02:021
11026993128,2cyclictest27590-21irqstats21:57:191
11026993128,2cyclictest22111-21diskmemload21:35:551
11026993128,2cyclictest17305-21/usr/sbin/munin22:27:211
11026993128,2cyclictest17166-21latency_hist22:27:021
11026993128,2cyclictest168-21systemd-journal20:57:021
11026993128,2cyclictest11451-21sh23:02:151
11026993128,2cyclictest0-21swapper/123:54:341
11026993127,3cyclictest3687-21apache_accesses22:52:181
11026993127,3cyclictest0-21swapper/121:30:251
11026993125,5cyclictest0-21swapper/122:42:191
11026993028,2cyclictest0-21swapper/123:34:171
11026993028,1cyclictest28574-21df19:52:161
11026993028,1cyclictest12778-21apache_accesses23:47:151
11026993027,2cyclictest17216-21seq20:48:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional