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2025-05-09 - 07:23

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 376 highest latencies:
System rackfslot4s.osadl.org (updated Fri May 09, 2025 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2187621200,1sleep021877-21/usr/sbin/munin19:06:080
1930921200,2chrt19311-21mailstats20:01:550
1844321160,3chrt18439-21aten2.4-expect22:01:120
373621130,2chrt3163-21apt-get00:25:550
3024021130,2sleep030241-21grep22:21:300
1362521120,2chrt13623-21grep21:51:520
1793521060,3chrt17936-21sh21:01:270
1250721020,2chrt12508-21sleep23:43:240
2926621000,3chrt29269-21timerwakeupswit00:12:540
64982830,2sleep06500-21tail20:40:590
307302760,2sleep030732-21sed19:21:540
19642760,2sleep01965-21ssh00:22:080
53312720,2sleep05332-21sh19:36:050
99322630,2sleep09970-21aten2.4_rfpower21:46:130
53082623,49sleep03783-21/usr/sbin/munin20:36:590
24742593,8sleep02475-21diskstats23:26:250
70912583,45sleep07135-21aten2.4_rfpower21:41:130
293672583,7sleep029349-21ssh21:22:350
236442583,7sleep023647-21ssh21:12:380
214132575,8sleep021410-21ntpq23:01:580
27542560,2sleep02755-21sh22:30:120
231282563,45sleep023123-21ntpq00:02:130
314042534,9sleep031402-21memory00:16:520
326022524,8sleep032604-21users21:28:030
127082525,39sleep012704-21ntpq22:46:590
112382520,2sleep011234-21sh20:50:000
66362510,2sleep06638-21cat21:40:050
50142514,37sleep05051-21stty23:31:100
294752510,3chrt29477-21latency_hist22:20:060
272202514,39sleep027253-21irqstats23:12:260
23623905018,22cyclictest0-21swapper00:35:180
23623904921,21cyclictest11-21ksoftirqd/021:56:590
23623904919,22cyclictest0-21swapper23:09:270
22522492,6sleep02234-21ssh21:31:510
156052490,3chrt15584-21ntpq22:52:060
23623904818,23cyclictest0-21swapper22:38:350
320212475,34sleep032024-21ntpq20:26:420
23623904718,22cyclictest0-21swapper00:33:230
23623904717,23cyclictest0-21swapper19:16:570
23623904616,23cyclictest0-21swapper22:08:450
2362390456,10cyclictest25948-21ntpq00:07:110
23623904515,22cyclictest0-21swapper21:18:590
23623904418,20cyclictest0-21swapper22:43:030
23623904418,19cyclictest0-21swapper23:45:480
23623904417,20cyclictest0-21swapper23:38:510
23623904414,22cyclictest0-21swapper22:29:530
2362390437,18cyclictest32107-21df_inode23:21:250
2362390435,29cyclictest14162-21apt-key20:55:100
23623904319,17cyclictest0-21swapper23:59:440
295492420,1sleep029547-21open_inodes20:21:510
2362390426,10cyclictest16377-21sshd19:56:270
2362390425,18cyclictest20198-21if_eth221:06:190
2362390424,11cyclictest12426-21irqstats20:51:210
23623904213,23cyclictest0-21swapper19:30:370
167762420,2sleep016778-21fschecks_time23:51:280
2362390415,26cyclictest24192-21df_inode19:11:040
2362390414,9cyclictest13663-21irqstats19:51:210
2362390414,28cyclictest173102sleep022:55:280
23623904114,18cyclictest31164-21kworker/0:120:30:550
2362390405,27cyclictest31579-21apt-get19:25:300
23623904014,18cyclictest26768-21grep20:16:350
23623904013,20cyclictest0-21swapper22:14:060
23623904010,13cyclictest0-21swapper23:15:450
2362390394,27cyclictest24166-21ntpq20:11:310
23623903914,20cyclictest20982-21fschecks_time20:06:120
2362390388,13cyclictest10851-21if_eth019:46:180
2362390379,21cyclictest8645-21ntpq19:41:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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