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2024-11-23 - 20:23

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 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 highest latencies:
System rackfslot4s.osadl.org (updated Sat Nov 23, 2024 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1392021220,2chrt13919-21sed11:02:330
487421130,2chrt4873-21/usr/sbin/munin09:47:110
184321110,2chrt1842-21ldconfig09:41:570
2359421100,2chrt23593-21grep08:20:520
3146821090,3chrt31459-21ps08:35:410
303621080,2chrt3031-21ps10:42:540
464621030,2chrt4647-21modprobe08:46:130
299052980,2chrt29906-21sh08:31:510
60072940,2sleep06009-21if_err_eth107:45:440
302332910,2sleep030234-21aten2.4_rfpower07:30:250
285012850,2sleep028502-21sh12:27:340
111492830,2chrt11131-21ntpq11:57:000
245852770,1sleep024586-21tune2fs12:21:310
39272750,1sleep03930-21sed07:42:000
130802750,2sleep013082-21awk12:01:190
202502700,2sleep020248-21cpu07:10:420
271682660,2sleep027170-21cat10:27:190
130012590,2sleep013040-21cat08:00:070
19573905626,22cyclictest22631-21ssh09:21:430
19573905622,15cyclictest795-21sendmail-msp08:40:300
19573905521,14cyclictest28016-21apt-get11:31:370
19573905426,20cyclictest11049-21latency_hist09:00:070
19573905424,21cyclictest21533-21perl11:15:520
19573905327,19cyclictest11520-21sendmail-msp10:01:170
19573905321,23cyclictest25078-21df_inode09:25:440
19573905319,13cyclictest22602-21sendmail-msp10:21:140
19573905318,16cyclictest2905-21seq11:42:230
19573905222,20cyclictest24875-21sendmail-msp07:20:430
19573905221,21cyclictest23504-21ntpq07:16:010
19573905221,21cyclictest16128-21if_eth011:06:010
19573905219,25cyclictest19488-21fschecks_time09:15:540
19573905219,24cyclictest6112-21/usr/sbin/munin09:50:410
19573905126,17cyclictest5295-21irqrtprio10:46:500
19573905125,18cyclictest13499-21df_inode08:01:010
19573905123,15cyclictest9791-21apt-get10:55:200
19573905121,22cyclictest0-21swapper10:34:390
19573905120,22cyclictest23677-21sendmail-msp11:21:030
19573905120,22cyclictest11099-21apt-get09:00:380
19573905119,24cyclictest8069-21memory10:51:150
19573905119,22cyclictest25446-21snmpd10:15:500
19573905118,24cyclictest31480-21sleep09:36:320
19573905117,16cyclictest7360-21diskstats11:50:480
19573905117,12cyclictest15573-21ntpq10:06:300
19573905027,14cyclictest893-21runrttasks11:11:000
19573905025,16cyclictest783-21ps07:35:460
19573905025,14cyclictest27558-21runrttasks07:25:150
19573905021,21cyclictest893-21runrttasks09:58:520
19573905019,22cyclictest25446-21snmpd12:05:130
19573905019,22cyclictest0-21swapper11:45:580
19573905019,22cyclictest0-21swapper11:26:490
19573905019,11cyclictest22754-21ntp_states12:17:520
19573905018,23cyclictest17786-21ps09:12:280
19573904924,16cyclictest27513-21apt-get09:30:210
19573904922,17cyclictest31121-21apt-get11:35:190
19573904919,22cyclictest18965-21ssh10:12:260
19573904918,23cyclictest18254-21sshd12:10:300
19573904918,22cyclictest16012-21apt09:10:000
12392490,2chrt1237-21/usr/sbin/munin12:37:120
19573904822,15cyclictest6012-21apt-get08:50:180
19573904819,20cyclictest29439-21ssh12:30:180
19573904818,21cyclictest31071-21sh10:35:230
1817624813,19sleep018177-21ntpq07:06:010
19573904720,18cyclictest18135-21/usr/sbin/munin08:10:270
19573904715,23cyclictest16074-21hddtemp_smartct08:05:370
19573904625,14cyclictest23082-21munin-run08:20:010
19573904622,16cyclictest25764-21apt-get08:25:120
19573904614,14cyclictest8244-21/usr/sbin/munin07:50:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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