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2025-11-21 - 08:30

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 Fri Nov 21, 2025 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1642921320,2sleep016428-21sh22:17:030
376521240,3chrt3766-21/usr/sbin/munin19:51:210
3126021170,2chrt31259-21ntpq23:41:560
2542321160,2chrt25425-21latency_hist20:35:030
2603421150,2sleep026035-21/usr/sbin/munin20:35:390
3266121100,3chrt32662-21sh19:45:240
2336721100,2chrt23368-21sleep21:31:480
1271621060,2chrt12717-21sleep21:12:430
1050821030,2sleep010511-21awk00:03:010
1904321010,3chrt19044-21sleep00:18:170
193362990,2chrt19337-21sh19:18:440
66462950,2sleep06647-21latency21:00:470
211772860,2sleep021178-21mailstats19:21:200
31262850,2sleep03128-21cut23:50:340
291962840,2sleep029198-21proc_pri21:42:140
138932840,2sleep013895-21wc22:12:210
247852750,1sleep024784-21grep23:30:520
283562740,2sleep028358-21aten2.4_rfpower00:35:380
44742720,2sleep04477-21sed21:56:050
261002660,1sleep026102-21cut00:31:040
142612603,8sleep014265-21ntpq20:12:080
7732583,7sleep0769-21ntpq22:47:040
208142563,7sleep020817-21missed_timers00:21:150
82462543,9sleep08251-21hddtemp_smartct23:00:560
106052533,40sleep010606-21hddtemp_smartct20:05:370
62332512,6sleep06169-21ssh23:55:530
253942513,37sleep025422-21perl21:35:560
188212514,6sleep018812-21ssh23:20:190
281302502,7sleep028114-21apt-get20:40:180
25792503,6sleep02575-21python321:52:170
14644905019,24cyclictest0-21swapper23:45:050
98942490,1sleep09891-21cpu22:05:550
315092495,6sleep0897-21sh19:41:420
14644904919,15cyclictest0-21swapper21:18:260
308092483,38sleep030814-21ssh21:45:380
208872480,3sleep020884-21ssh22:25:380
14644904819,21cyclictest0-21swapper22:39:300
14644904815,24cyclictest0-21swapper00:13:190
109512480,1sleep010952-21fschecks_time23:05:520
60132470,2chrt5988-21ssh22:56:220
14644904718,22cyclictest0-21swapper22:04:190
14644904716,22cyclictest0-21swapper22:23:020
225602462,7sleep022553-21apt-get00:25:140
14644904616,21cyclictest0-21swapper22:53:220
131912461,5sleep013194-21ssh23:10:080
1249424613,19sleep012502-21df_inode19:05:240
1464490455,19cyclictest20653-21ntpq21:26:580
14644904517,12cyclictest0-21swapper23:18:020
14644904516,13cyclictest0-21swapper23:37:430
14644904514,22cyclictest0-21swapper22:34:220
224812440,2sleep022477-21sshd20:28:280
1464490444,12cyclictest1004-21df_inode20:50:310
14644904415,22cyclictest0-21swapper23:27:300
14644904414,15cyclictest0-21swapper21:24:230
14644904320,16cyclictest0-21swapper19:35:330
1464490425,9cyclictest5598-21munin-run21:00:020
1464490424,10cyclictest15899-21hddtemp_smartct20:15:390
14644904220,14cyclictest0-21swapper22:43:020
14644904215,21cyclictest0-21swapper19:11:540
14644904214,10cyclictest23459-21ntpq19:26:080
1464490415,17cyclictest9633-21python321:06:230
125652412,32sleep012560-21ssh00:06:210
1464490404,17cyclictest869-21snmpd19:32:410
14644904012,10cyclictest5962-21load19:55:470
14644903913,9cyclictest8713-21ld20:01:090
181342380,2sleep018135-21aten2.4_rfpower20:20:260
1464490386,11cyclictest31689-21ntpq20:46:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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