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2024-07-27 - 14:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #7

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.

Note that this system runs a non-RT kernel.
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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackbslot7s.osadl.org (updated Sat Jul 27, 2024 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5853210278,1004sleep35897-21ntpq22:16:223
20427296678,805sleep320457-21fschecks_count21:21:213
10866252516,492sleep210870-21df00:16:082
3876247826,435sleep03894-21/usr/sbin/munin22:11:020
14878247811,404sleep315013-21head21:01:463
14878247811,404sleep315013-21head21:01:463
839724090,15sleep112-21rcu_sched00:06:251
22892232241,260sleep00-21swapper/023:11:160
24604231414,287sleep024614-21irqstats23:16:130
20411230923,198sleep320441-21modprobe19:40:533
22564230382,203sleep322689-21latency_hist23:10:553
31770227315,113sleep331809-21fschecks_count21:56:153
8343225077,98sleep38289-21latency_hist22:25:553
2927224362,161sleep33001-21threads22:06:243
29089222736,104sleep329106-21fschecks_count23:31:103
19383220312,178sleep319405-21munin-run23:00:533
8953219985,81sleep38979-21ntp_kernel_pll_22:26:243
1771219829,109sleep313199-1kworker/3:2H23:46:253
261821870,65sleep30-21swapper/320:25:553
25344218177,86sleep30-21swapper/321:36:113
9857217430,105sleep39971-21timerwakeupswit20:46:523
13890216811,143sleep313938-21awk00:26:073
13890216811,143sleep313938-21awk00:26:073
20032216611,114sleep320045-21cron21:20:523
20032216611,114sleep320045-21cron21:20:523
8583215963,73sleep38733-21grep19:01:273
1208221548,131sleep312227-21sed19:11:253
30544214550,82sleep330546-21apt-get23:36:033
3023121439,119sleep330300-21fschecks_time21:51:183
28689213920,90sleep228712-21awk23:30:532
3451213529,40sleep33552-21grep23:51:253
12320213514,106sleep112339-21apt-get00:21:041
8714213426,24sleep38673-21apt-get20:45:553
21308213410,108sleep221404-21timerandwakeup19:41:252
8828213011,104sleep09047-21cat20:45:560
1475921307,46sleep30-21swapper/322:46:073
12418212832,18sleep30-21swapper/300:21:103
1297521278,63sleep313041-21date22:40:543
6704212622,82sleep16715-21modprobe22:20:531
23650212623,86sleep023141-21apt-get21:31:030
13577212435,71sleep313644-21systemd-run21:00:533
27833212332,78sleep327855-21ntpq23:26:173
19897212348,14sleep30-21swapper/323:01:133
3972212117,32sleep30-21swapper/320:30:533
14522212110,99sleep314500-21latency_hist22:45:553
24955212010,94sleep125076-21timerandwakeup23:16:221
2226521209,95sleep322311-21grep21:26:183
3247421198,88sleep30-21swapper/323:41:163
23834211718,11sleep30-21swapper/323:13:013
12099211526,18sleep30-21swapper/300:20:543
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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