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2025-12-08 - 18:15

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackfslot4s.osadl.org (updated Mon Dec 08, 2025 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2734021230,2chrt26955-21/usr/sbin/munin09:15:460
2355621200,3chrt23557-21sleep10:06:190
292021110,2sleep02923-21irqrtprio11:26:070
2092421100,2chrt20923-21awk11:00:390
898121070,2chrt8983-21grep08:40:250
62432990,2chrt6244-21basename07:31:300
99782980,2chrt9979-21sleep07:38:120
26162920,2sleep02619-21cut10:27:100
183322910,2sleep018335-21tail07:55:270
254762860,2sleep025477-21collect212:06:470
311382740,1sleep031139-21collect207:15:510
37932690,1sleep03797-21sed12:26:010
148952640,2sleep014921-21apt10:50:010
84822564,43sleep08479-21irqstats11:36:100
300852563,6sleep030082-21ntpq11:16:270
204522560,2sleep020454-21sendmail11:00:010
188642542,43sleep018897-21sh11:55:380
27526905216,29cyclictest0-21swapper09:05:060
90602510,1sleep09091-21/usr/sbin/munin12:35:570
64622512,41sleep06452-21ssh09:36:070
311522500,3sleep031143-21ssh10:20:420
27526905021,22cyclictest0-21swapper10:40:090
229242500,1sleep022926-21processes12:02:090
303442490,1sleep030378-21if_eth112:16:010
27526904919,23cyclictest0-21swapper11:48:470
292562480,2chrt29235-21ntpq10:16:420
27526904819,22cyclictest0-21swapper10:38:200
27526904819,22cyclictest0-21swapper09:44:110
27526904818,23cyclictest0-21swapper11:14:130
124262482,5sleep012423-21ssh11:43:260
110472470,2chrt11045-21/usr/sbin/munin07:40:350
2752690465,11cyclictest28106-21ntpq12:11:290
27526904616,23cyclictest0-21swapper09:34:050
27526904616,22cyclictest0-21swapper11:22:530
27526904610,17cyclictest0-21swapper11:50:070
27526904516,21cyclictest0-21swapper09:13:480
2553324510,19sleep025543-21smartctl07:05:300
153802453,34sleep015377-21ntpq09:51:360
27526904415,22cyclictest0-21swapper12:33:240
21862440,3chrt2187-21sh07:23:110
170112443,33sleep017015-21python307:51:240
152752440,2sleep015278-21processes08:51:240
2752690435,18cyclictest25622-21munin-run08:10:010
27526904319,17cyclictest19689-21/usr/sbin/munin10:02:190
27526904314,22cyclictest0-21swapper12:23:220
27526904314,22cyclictest0-21swapper11:07:330
27526904313,23cyclictest0-21swapper10:53:370
2752690429,8cyclictest0-21swapper08:36:370
2752690425,9cyclictest31589-21users09:22:300
2752690425,8cyclictest13188-21users08:47:220
27526904216,9cyclictest4950-21aten2.4_rfpower11:30:320
2752690415,9cyclictest3825-21ntpq07:25:590
2752690415,28cyclictest19085-21/usr/sbin/munin09:01:300
2752690415,28cyclictest17429-21memory08:55:490
2752690415,17cyclictest26216-21perl08:10:340
27526904120,13cyclictest4252-21ssh10:30:510
27526904119,15cyclictest0-21swapper10:13:220
27526904119,15cyclictest0-21swapper08:30:260
27526904116,19cyclictest583-21fschecks_count09:25:530
27526904116,16cyclictest1141-21/usr/sbin/munin08:25:270
27526904115,10cyclictest869-21snmpd07:10:070
2752690405,8cyclictest28527-21apt-get08:15:580
2752690404,9cyclictest32270-21ntpq08:21:180
27526904020,12cyclictest0-21swapper09:55:350
27526904019,15cyclictest11499-21telnet09:45:320
230002401,4sleep00-21swapper08:04:420
2752690366,11cyclictest14307-21ntp_states07:46:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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