Feature #3933: Limiter burst doesn't have any effect - pfSense - pfSense bugtracker

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Feature #3933

closed

Limiter burst doesn't have any effect

Feature #3933: Limiter burst doesn't have any effect

Added by Chris Buechler almost 12 years ago. Updated about 10 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Category:

Traffic Shaper (ALTQ)

Target version:

Start date:

10/13/2014

Due date:

% Done:

Estimated time:

Plus Target Version:

Release Notes:

Description

No matter what you put in the burst field, the limiter behaves exactly the same as if it's 0 or null. Re-tested on the most recent 2.2 snapshot as of now, and it behaves the same in every 2.1.x stable release. For example the attached traffic graph, that's 4 Mb down (out), 2 Mb up (in) limiters. First run with no burst, second run with 400000 thrown in as the burst. Doesn't matter if that's a small number or huge number, it has no effect at all.

I'd be fine with just removing the burst field for 2.2 if fixing this is really involved.

Files

limiter-no-burst.png (15.9 KB) limiter-no-burst.png

Chris Buechler, 10/13/2014 11:27 PM

EL Updated by Ermal Luçi almost 12 years ago Actions
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#1

It will take effect only when the queue if full as normal with other shaping implementations.
If your queue is not full you will not notice this at all.

CB Updated by Chris Buechler almost 12 years ago Actions
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#2

Assignee changed from Ermal Luçi to Chris Buechler

after discussion with Ermal, needs testing vs. stock FreeBSD

CB Updated by Chris Buechler almost 12 years ago Actions
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#3

Status changed from New to Confirmed
Assignee deleted (~~Chris Buechler~~)
Target version changed from 2.2 to 2.3

dummynet burst on stock FreeBSD 10.1 does indeed work how I'd expect it to work. Ours doesn't have any impact whatsoever, with the exact same pipe config that has the expected behavior on 10.1. This has never worked, and there are too many 2.2 target issues already, so I just commented out the burst portion from the GUI bits. Can revisit later.

AK Updated by Ahmed Kamal over 11 years ago Actions
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#4

Hi Chris,

This issue is a blocker for me, I would really want the bursting functionality to work. I would like to help debug this issue as much as I can. I'm new to BSDs, but I'm quite experienced with Linux .. so I can hopefully get the hang of it

Can someone please guide me into how to debug this .. What commands to run, where to look .. I mean if the kernel level functionality is correct in FreeBSD 10.1, then this strikes me as just a configuration mistake (most likely) ? or a wrong command being run by the GUI ...etc