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2026-06-13 - 22:36

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 100 highest latencies:
System rackfslot4s.osadl.org (updated Sat Jun 13, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3047221350,3chrt30471-21seq07:50:500
2243221240,3chrt22433-21touch10:10:200
3080521210,3chrt30806-21kernelversion11:11:080
377721180,2sleep03776-21seq08:52:190
2014421170,2chrt20143-21seq11:44:130
1002221170,2chrt10024-21kernelversion09:51:100
2250521140,2sleep022507-21cut12:36:050
1893921130,2sleep018940-21aten2.4_rfpower08:25:250
1525621130,4chrt15257-21rm09:59:450
1441621130,2sleep014431-21cut09:10:340
520421120,2chrt5205-21seq10:32:220
1733121120,2chrt17328-21ps10:02:130
1013921120,2chrt10140-21who12:17:250
3188721110,2sleep031889-21fschecks_time09:35:530
2255821110,3chrt22550-21ps08:30:430
2683521100,2sleep026832-21tune2fs07:45:370
111821100,2chrt1120-21awk11:15:510
326021080,2sleep03261-21chrt08:00:170
846421070,3chrt8465-21uname11:26:090
2705621070,2chrt27058-21sh09:28:410
1727521060,2chrt17273-21if_eth110:51:020
128721050,3chrt1288-21sleep08:49:010
2125921040,3chrt21260-21ssh12:34:520
1202221040,2sleep012021-21seq08:14:080
1791921000,2sleep017920-21gpgv12:30:060
1533221000,2sleep015333-21chrt10:47:440
126832980,2sleep012684-21basename08:15:240
78092930,2sleep07810-21cat08:06:250
250572930,2sleep025055-21timerandwakeup11:02:220
44732920,2sleep04474-21chrt09:43:050
326432820,2sleep032645-21aten2.4_rfpower10:25:380
107302810,2sleep010732-21chrt11:30:130
103572810,1sleep010360-21sort10:40:510
231502800,1sleep023151-21seq11:48:300
199272780,2sleep019928-21ssh10:06:060
204892750,2sleep020490-21seq09:19:210
199682710,2sleep019969-21chrt07:35:010
294052650,1sleep029406-21chrt11:09:420
108902650,1sleep010893-21seq09:04:490
79672640,2sleep07968-21tune2fs07:15:370
293702640,2sleep029371-21chrt08:41:150
55212560,2sleep05532-21awk11:21:400
276972555,9sleep027701-21users10:17:230
305602540,1sleep030561-21latency_hist12:00:070
42592520,2sleep04260-21cut07:10:030
58772500,3chrt5878-21runrttasks09:45:420
43432500,1sleep04344-21seq07:10:060
4238905019,22cyclictest0-21swapper12:09:370
12422490,2chrt1240-21/usr/sbin/munin07:56:010
4238904819,21cyclictest0-21swapper11:52:350
4238904819,21cyclictest0-21swapper10:24:110
4238904817,22cyclictest0-21swapper12:12:270
4238904816,23cyclictest0-21swapper12:03:080
4238904716,21cyclictest0-21swapper09:33:520
259442470,4chrt25945-21runrttasks08:35:490
4238904612,25cyclictest5308-21diskstats08:55:340
186112460,1sleep018696-21cat08:25:030
4238904515,22cyclictest14093-21diskmemload10:40:010
4238904511,14cyclictest14559-21df07:26:180
205912450,3chrt20592-21if_eth210:56:030
423890446,20cyclictest21309-21ntpq07:36:060
423890446,11cyclictest12349-21ntpq09:06:080
4238904313,21cyclictest14370-21ssh12:24:340
4238904310,13cyclictest11531-21sed07:20:480
423890425,10cyclictest16036-21ssh11:37:230
4238904113,20cyclictest21568-21sshd09:20:540
423890405,9cyclictest24323-21ntpq07:40:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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