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Feature #2893

automatic simulator for large LU load

Added by laforge 10 months ago. Updated 4 months ago.

Status:
Stalled
Priority:
High
Assignee:
Category:
-
Target version:
-
Start date:
01/27/2018
Due date:
% Done:

0%

Spec Reference:

Description

Every so often we see systems suffering a lot from large LU load.

There are many tunables like each tx delay/integer, access control class ramping, ms-acces-lv-min ramping, doewnlink poweer ramping, im ass reejct timer, etc

In order to be able to test different configurations and possible patches, we need a reproducible test scenario for benchmarking our performance.

Ideally this shoiuld be possible with osmocombb and virtphy. For just performing a LU, we don't even need scripting. However, we need
  • starting large number of "mobile"
  • realistic timing for network scan / cell search (virtphy is too fast)
  • implementation of downlink attenuation
  • detection of RACH collisions in bts-virtual

Related issues

Related to OsmoBSC - Feature #2722: document RACH tuning parameters more thoroughly, give explanationsNew2017-12-08

Related to OsmoBSC - Feature #2591: ramp up cell slowly based on access control class to avoid severe RACH/SDCCH overloadResolved2017-10-23

Blocked by Cellular Network Infrastructure - Feature #2558: Scripts to manage thousands of "mobile" and hundreds of osmo-bts-virtual instancesIn Progress2017-10-06

Blocked by OsmocomBB - Feature #2555: script interface to OsmocomBB "mobile"In Progress2017-10-06

History

#1 Updated by laforge 10 months ago

  • Related to Feature #2722: document RACH tuning parameters more thoroughly, give explanations added

#2 Updated by laforge 10 months ago

  • Related to Feature #2591: ramp up cell slowly based on access control class to avoid severe RACH/SDCCH overload added

#3 Updated by laforge 10 months ago

  • Priority changed from Normal to High

#4 Updated by laforge 10 months ago

  • Assignee changed from laforge to sysmocom

#5 Updated by laforge 4 months ago

  • Blocked by Feature #2558: Scripts to manage thousands of "mobile" and hundreds of osmo-bts-virtual instances added

#6 Updated by laforge 4 months ago

  • Blocked by Feature #2555: script interface to OsmocomBB "mobile" added

#7 Updated by laforge 4 months ago

  • Status changed from New to Stalled
  • Assignee changed from sysmocom to dexter

assigning this to dexter - but he will have to wait for completion of #2555 / #2558 by zecke before really starting on this.

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