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2026-06-09 - 23:54

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 all highest latencies:
System rackfslot4s.osadl.org (updated Tue Jun 09, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2380421200,3chrt23389-21/usr/sbin/munin09:30:380
329521190,2chrt3290-21mailstats08:06:250
1356521190,3chrt13554-21ssh10:03:370
3196721170,3chrt31970-21runrttasks08:00:440
1057121170,3chrt10572-21runrttasks12:25:330
1954721150,3chrt19548-21runrttasks12:38:370
59121130,1sleep0634-21cut12:10:340
1796121110,4chrt17960-21seq10:58:400
1119421110,2chrt11195-21sleep07:27:220
756221100,3chrt7561-21sshd11:31:320
2905321090,2chrt29055-21awk10:26:210
952721080,2sleep09526-21sed10:46:040
55221080,2chrt549-21sshd09:44:280
2477321080,2chrt24775-21seq11:57:240
127221070,2chrt1275-21rm11:22:110
2405921040,3chrt24060-21sleep07:48:370
1913521040,2chrt19136-21sleep09:23:170
327621030,2chrt3278-21grep07:15:360
1951921010,2sleep019520-21chrt11:50:180
47192930,2sleep04720-21run-parts11:27:140
3112910,1sleep0313-21wc12:10:040
14342840,2sleep01436-21sleep10:34:120
201662810,2sleep020167-21ssh09:25:260
95552780,2sleep09556-21sshd08:16:280
27542780,2sleep02755-21sh10:36:040
190122770,1sleep019015-21cut07:40:360
168712770,2sleep016869-21timerandwakeup10:08:200
277372750,2sleep027738-21seq11:13:120
191062720,1sleep019109-21grep11:00:350
290042717,14sleep029006-21apt-get07:05:120
115242700,2sleep011525-21chrt08:20:300
120112690,2sleep012012-21seq11:38:310
273632640,2sleep027364-21if_eth012:01:460
95942630,2sleep09595-21cat09:57:260
299622630,1sleep029965-21latency_hist09:40:050
57252600,2sleep05728-21sh09:51:380
150442600,2sleep015046-21cut08:25:430
57982594,10sleep05790-21diskstats10:40:490
88682584,8sleep08882-21grep07:25:040
207142570,2sleep020716-21chrt08:35:160
254672553,10sleep023810-21/usr/sbin/munin08:41:330
123762550,2sleep012377-21chrt07:30:190
191632530,2sleep019164-21ssh11:49:450
136072510,2sleep013610-21awk09:15:360
115852510,2sleep011586-21seq09:11:590
272802500,2chrt27277-21/usr/sbin/munin08:45:320
32011904919,21cyclictest0-21swapper11:08:350
261792490,3sleep026177-21kernelversion07:51:380
144582490,2chrt14455-21/usr/sbin/munin10:53:130
32011904720,20cyclictest0-21swapper11:44:230
32011904718,21cyclictest0-21swapper09:48:390
185552470,2chrt18553-21/usr/sbin/munin10:11:000
32011904617,21cyclictest0-21swapper11:19:270
32011904516,22cyclictest0-21swapper10:18:310
177452453,33sleep017601-21apt-get08:30:370
163512450,2sleep016350-21seq12:33:520
3201190445,12cyclictest5330-21ntpq12:16:570
58292431,34sleep00-21swapper09:02:350
3201190425,19cyclictest7222-21df_inode09:05:290
3201190415,17cyclictest657-21memory07:10:490
3201190415,10cyclictest412-21snmpd07:55:200
32011904115,19cyclictest24499-21apt-get10:20:170
32011904112,10cyclictest412-21snmpd08:56:090
32011904111,20cyclictest0-21swapper12:20:090
3201190405,9cyclictest5891-21memory08:10:450
3201190404,18cyclictest31320-21ntp_states08:51:180
3201190384,8cyclictest15417-21apt-get07:35:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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