2014-08-13 - Re: [GRASE-Hotspot] Re: Stalling upload?

Header Data

From: Timothy White <ti***8@gmail.com>
Message Hash: 7b3943dd5fad820a45f515de32a79c4c79cb2eadbf41990da0f997714b689229
Message ID: <CAESLx0K8HPFOzV11Z_J5PXKZr+2p9Fy5KdRA72n0+yadLePEFg@mail.gmail.com>
Reply To: <9ffd569f-daac-476f-9bbf-d03b551cfc14@grasehotspot.org>
UTC Datetime: 2014-08-13 02:29:57 UTC
Raw Date: Wed, 13 Aug 2014 19:29:57 +1000

Raw message 

Hi Sheldon

This sounds like it could be a MTU issue. Check that the MTU Grase is
setting on the tun0 device, and all the interfaces is correct.
Also, check that it's not CPU limited. On a lower powered machine the
traffic accounting can slow things down.

I just did a quick test on the stable version, in a VM and had no problems.

Have you checked the settings between the 2 VM environments? Does the
Ubuntu VM work fine in the production environment when used as a drop in
replacement for Grase?

Tim


On Thu, Jul 31, 2014 at 2:11 AM, <sh***n@sigsegv.ca> wrote:

> Sorry for the early update -- I should mention:
>
> 1. This is the newest version of GRASE (non-nightly) on Ubuntu 12.04 LTS.
> 2. There are no speed limits or data restrictions on the pgroups.
> 3. I have another Ubuntu 12.04 VM just doing DHCP and NAT via iptables,
> which works fine.
>
>
> On Wednesday, July 30, 2014 9:09:13 AM UTC-7, sh***.@sigsegv.ca wrote:
>>
>> Hi all,
>>
>> I have a new GRASE install on a VMWare ESXi server. In our lab, it works
>> great! All upload/download works. But on our production box, we are seeing
>> uploads stalling out for clients.
>>
>> Uploads will start out fast -- a few megabits atleast, per our connection
>> - but will drop down to zero very quickly. This issue is so bad that speed
>> tests don't even complete - they get stuck on the upload portion. That
>> said, all web browsing works fine (i imagine because smaller packets for
>> simply requesting web traffic).
>>
>> Has anyone seen this? I'm not even particularly sure where to start
>> debugging. I've enabled Chillispot debugging, but don't see any obvious
>> error messages in the output. Uploads via scp from the grase server work
>> fine. I have also created a client VM on the same box -- just to eliminate
>> any physical layer issues. I see the same issue on the vSwitch.
>>
>> Any assistance or direction is appreciated!
>>
>>  --
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