You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-08 - 11:57

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
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 100 highest latencies:
System rackbslot7s.osadl.org (updated Fri May 08, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17315214189,1398sleep215715-21kworker/2:123:05:582
17315214189,1398sleep215715-21kworker/2:123:05:582
1080029677,925sleep210844-21ntpq19:20:162
19836296314,937sleep115626-21kworker/1:221:32:541
10686240819,372sleep310663-21latency_hist21:04:513
32103233686,197sleep232114-21modprobe23:54:482
32103233686,197sleep232114-21modprobe23:54:482
3670228212,245sleep23758-21xargs00:05:182
31385228213,207sleep231529-21grep20:25:212
31385228213,207sleep231529-21grep20:25:212
22300228236,230sleep2309-21rs:main2
12957226615,173sleep213152-21cat22:54:522
2232422630,15sleep3225-21systemd-journal23:24:483
13690222798,115sleep213195-21/usr/sbin/munin22:55:212
22552222014,183sleep222569-21modprobe19:59:492
12583221241,112sleep212695-21timerandwakeup19:25:212
30372220432,114sleep230404-21modprobe20:24:482
1200220127,25sleep20-21swapper/223:59:482
9050220053,107sleep20-21swapper/220:59:492
9050220053,107sleep20-21swapper/220:59:492
23109219015,158sleep023110-21cron21:44:480
2006021816,161sleep220134-21find23:15:192
2036021809,157sleep020383-21fschecks_count21:35:080
2187217434,98sleep22279-21tune2fs22:20:072
8209216919,133sleep228359-21kworker/u8:319:14:512
30512216410,139sleep230685-21cat23:49:512
30512216410,139sleep230685-21cat23:49:512
24973216116,28sleep20-21swapper/220:05:182
28680215815,127sleep328547-21latency_hist23:44:513
10373215788,50sleep20-21swapper/222:45:192
26087215618,27sleep20-21swapper/223:35:132
31792215387,53sleep231817-21awk22:10:142
5927215124,109sleep26059-21cat19:05:182
2184521490,68sleep00-21swapper/019:55:180
1643521499,12sleep30-21swapper/323:05:073
1643521499,12sleep30-21swapper/323:05:073
23302214856,77sleep223448-21unixbench_singl23:25:202
23159214528,17sleep20-21swapper/221:44:502
554721445,12sleep30-21swapper/300:10:233
13529214422,45sleep20-21swapper/219:30:052
27482214313,49sleep227612-21unixbench_multi21:56:092
27358214218,30sleep00-21swapper/023:40:080
2605421428,12sleep10-21swapper/120:10:061
32750214032,16sleep20-21swapper/220:30:302
2066421405,11sleep20-21swapper/219:50:282
15620213917,62sleep20-21swapper/219:35:182
5940213634,20sleep20-21swapper/200:14:512
23113213516,102sleep1225-21systemd-journal21:44:491
2976421340,6sleep20-21swapper/222:04:522
1774321329,112sleep3363-21snmpd19:42:423
60321309,47sleep2684-21tune2fs22:15:112
19507212931,66sleep20-21swapper/219:49:522
13297212921,63sleep10-21swapper/122:55:071
324921245,12sleep30-21swapper/320:40:083
4951212312,84sleep20-21swapper/220:45:112
4951212312,84sleep20-21swapper/220:45:112
27800212315,86sleep027866-21wc20:15:140
21919212321,84sleep122045-21ls19:55:201
5883211815,44sleep20-21swapper/222:30:252
5883211815,44sleep20-21swapper/222:30:252
7880211717,80sleep37940-21/usr/sbin/munin20:55:103
7880211717,80sleep37940-21/usr/sbin/munin20:55:103
410621178,74sleep2363-21snmpd20:41:122
26587211732,74sleep226692-21timerandwakeup20:10:192
203021159,93sleep20-21swapper/220:35:182
9454211412,78sleep00-21swapper/021:00:070
9038211213,85sleep29067-21awk00:24:482
11778211222,70sleep20-21swapper/200:30:212
499211110,85sleep1550-21processes20:30:371
2278211013,71sleep12425-21unixbench_singl20:35:211
12460211012,31sleep20-21swapper/221:09:582
881821099,19sleep20-21swapper/219:15:032
8252210822,57sleep38440-21latency_hist19:14:523
7544210719,72sleep07674-21sed19:10:210
17257210727,20sleep20-21swapper/221:25:082
7221210611,45sleep27255-21ps22:35:182
12248210614,80sleep212313-21date21:09:502
2380221058,21sleep223846-21ntpq21:45:152
2027121057,15sleep20-21swapper/221:35:012
14012210412,77sleep20-21swapper/221:14:592
23447210313,74sleep20-21swapper/220:00:182
27899210238,53sleep227943-21ntpq20:15:162
12405210213,16sleep20-21swapper/200:35:012
244821018,25sleep20-21swapper/200:00:292
16082210113,35sleep20-21swapper/221:20:162
579021006,74sleep00-21swapper/019:05:160
1379421008,19sleep00-21swapper/022:55:230
49042998,45sleep20-21swapper/222:29:442
49042998,45sleep20-21swapper/222:29:442
306742998,15sleep20-21swapper/222:05:222
2441129920,57sleep124431-21uname23:30:121
966529716,59sleep20-21swapper/222:44:512
2161229719,55sleep321737-21cat21:39:513
179062978,36sleep20-21swapper/223:10:022
179062978,36sleep20-21swapper/223:10:022
281652969,41sleep228178-21awk23:40:222
957629511,32sleep20-21swapper/221:00:092
284229524,49sleep32929-21latency_hist00:04:503
1991729515,64sleep319918-21ntp_states23:15:163
132842940,5sleep30-21swapper/321:10:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional