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2026-04-14 - 03:26

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 792 highest latencies:
System rackfslot4s.osadl.org (updated Mon Apr 13, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2546021240,2chrt25463-21cpu11:05:370
2164521220,2chrt21646-21sleep09:23:130
3012221200,2chrt30119-21ld11:12:110
2687521200,2chrt26876-21sleep07:48:510
2287121200,2chrt22869-21ssh10:13:300
2991221190,2chrt29911-21/usr/sbin/munin12:00:540
1674621190,2chrt16747-21ssh10:52:280
2113121180,3chrt21133-21runrttasks07:40:020
3174121160,2chrt31739-21ld10:26:190
3071121150,2chrt30697-21ntpq09:36:410
1881221150,2chrt18810-21/usr/sbin/munin10:07:130
1764421150,2chrt17642-21ld09:17:190
2911621140,2sleep029117-21seq11:59:570
1436621140,2sleep014367-21proc_pri09:12:250
1994721110,1sleep019949-21fschecks_count11:45:510
419321100,2sleep04194-21perl09:45:560
2884021100,3chrt28841-21chrt09:34:260
2126921100,2chrt21270-21chrt10:59:400
1606521080,2chrt16066-21cat10:03:120
2264521060,2chrt22644-21ssh12:38:080
1006021050,3chrt10061-21sleep12:19:500
148952990,1sleep014897-21chrt07:30:010
167752960,2sleep016776-21chrt12:29:580
145762930,2sleep014577-21chrt10:49:530
68422900,2sleep06843-21chrt09:50:060
284242900,1sleep028425-21latency07:50:470
173382900,2sleep017339-21seq08:25:260
122882880,2sleep012289-21seq09:57:300
61862830,2sleep06187-21seq12:13:300
85492770,2sleep08550-21basename10:40:530
268672690,1sleep026868-21seq10:19:460
243552690,2sleep024356-21chrt11:52:060
134582680,2sleep013459-21seq12:24:580
6972660,2sleep0700-21tail12:05:490
37692660,1sleep03770-21chrt11:21:110
221802640,2sleep022181-21aten2.4_rfpower11:00:520
72682580,1sleep07273-21tr11:26:500
308222570,2sleep030824-21runrttasks07:55:130
29042550,1sleep02903-21perl07:10:360
128032550,2sleep012807-21runrttasks11:35:210
233312540,2sleep023332-21cat09:26:050
200872540,2sleep020112-21latency_hist12:35:000
117002540,2sleep011701-21chrt08:15:470
204902533,41sleep020123-21/usr/sbin/munin08:30:340
17322533,43sleep01745-21users08:51:330
306522522,7sleep030665-21ntpq08:46:080
3273725113,22sleep032732-21ntpq07:05:430
22792510,1sleep02281-21cut10:31:070
61392500,2sleep06179-21awk07:15:430
9912490,2sleep0990-21awk11:17:110
164642493,36sleep016499-21df11:40:410
94842470,2chrt9482-21/usr/sbin/munin07:21:190
290532474,36sleep029054-21python310:22:170
226890475,20cyclictest15461-21fschecks_count07:30:340
77082460,1sleep07707-21seq08:10:150
15342452,6sleep01471-21apt-get08:00:230
12702450,2sleep01271-21irqstats09:41:110
81682440,3sleep08167-21seq09:02:000
263802440,1sleep026383-21runrttasks08:40:180
163712440,2chrt16372-21sh08:23:440
70742432,34sleep07079-21ssh10:38:140
126222430,2chrt12624-21latency_hist11:35:040
67652422,11sleep00-21swapper08:07:590
226890414,9cyclictest23729-21fw_packets08:35:360
2268904012,10cyclictest22805-21grep07:41:270
226890394,18cyclictest4189-21memory08:55:510
120802390,2sleep012081-21sleep09:09:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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