You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-08-24 - 18:39

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 50 highest latencies:
System rackbslot7s.osadl.org (updated Mon Aug 24, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17513222506,2231sleep03063-21kworker/0:210:47:230
17513222506,2231sleep03063-21kworker/0:210:47:230
183792164035,1535sleep214537-21kworker/u8:210:50:272
46462127812,1250sleep04657-21/usr/sbin/munin11:49:150
705259017,554sleep0831-21/usr/sbin/munin08:09:460
29522236288,174sleep20-21swapper/207:59:342
6531234149,272sleep26593-21fschecks_time11:54:342
16189232624,280sleep116227-21grep12:24:321
5450232018,216sleep25600-21unixbench_multi08:24:462
221082307106,185sleep222140-21proc_pri07:34:432
1066322927,273sleep2367-21snmpd12:07:012
1066322927,273sleep2367-21snmpd12:07:012
10174228029,83sleep20-21swapper/210:24:322
28225225762,180sleep228261-21ntp_kernel_err07:54:382
17919224842,196sleep2367-21snmpd07:19:542
17919224842,196sleep2367-21snmpd07:19:542
2980223111,200sleep229118-21kworker/u8:008:19:172
2980223111,200sleep229118-21kworker/u8:008:19:172
21314222314,192sleep121384-21/usr/sbin/munin10:59:311
14641222157,89sleep20-21swapper/212:19:322
9527218734,37sleep30-21swapper/308:39:323
24455217921,81sleep20-21swapper/211:09:202
24455217921,81sleep20-21swapper/211:09:202
498221787,157sleep25074-21tune2fs11:49:332
10743217813,86sleep210878-21latency_hist08:44:162
14181217776,21sleep20-21swapper/208:54:332
23069217612,150sleep322587-21apt-get11:04:213
23069217612,150sleep322587-21apt-get11:04:213
16842217261,87sleep216985-21grep12:24:452
13875217012,143sleep313913-21ntp_kernel_pll_07:09:543
13875217012,143sleep313913-21ntp_kernel_pll_07:09:543
3007921666,106sleep20-21swapper/211:24:472
31459216210,55sleep20-21swapper/211:29:432
23483215915,24sleep023541-21sed07:39:340
12725215646,98sleep212788-21cat08:49:372
1555921518,89sleep20-21swapper/207:14:332
1400214845,87sleep21552-21gpgv11:39:162
2416421358,47sleep223675-21/usr/sbin/munin09:24:412
2416421358,47sleep223675-21/usr/sbin/munin09:24:412
15518213454,57sleep20-21swapper/210:39:462
3409213317,53sleep23449-21http10:04:142
1935421309,24sleep20-21swapper/207:24:462
17499212945,69sleep017575-21/usr/sbin/munin07:19:440
17499212945,69sleep017575-21/usr/sbin/munin07:19:440
7041212649,62sleep27190-21head08:29:462
27405212612,30sleep227512-21timerandwakeup09:34:422
27405212612,30sleep227512-21timerandwakeup09:34:422
269121269,15sleep00-21swapper/009:59:430
19294212549,23sleep213100-21cyclictest12:34:342
11692212416,92sleep311709-21apt10:29:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional