[Winpcap-users] Multiple instances

[David Chang]

Could you use a single filter with 'OR' statements to fulfill the 200 
conditions you wish to capture for?  Then, handle the resulting packets in 
your own application?  Or will the 200 conditions just get every packet 
anyway?

Could you describe what your application is trying to do?

DC

----- Original Message ----- 
From: "pro2c" <pro2c at litrca.com>
To: <winpcap-users at winpcap.org>
Sent: Thursday, May 13, 2010 9:25 AM
Subject: Re: [Winpcap-users] Multiple instances


> It's developed in VB.NET 2.0
> I optimized as far as I could. Maybe .NET is not a fast platform.
> Can send source code to someone who can do VB
>
>
> -----Original Message-----
> From: winpcap-users-bounces at winpcap.org
> [mailto:winpcap-users-bounces at winpcap.org] On Behalf Of Gianluca Varenni
> Sent: Thursday, May 13, 2010 6:13 PM
> To: winpcap-users at winpcap.org
> Subject: Re: [Winpcap-users] Multiple instances
>
> A packet flow if 1.5MB/s is really low. The problem was probably in the
> logic of your application. If I were you, I would definitely review your
> application design to understand what the bottleneck was.
>
> Have a nice day
> GV
>
> --------------------------------------------------
> From: "pro2c" <pro2c at litrca.com>
> Sent: Thursday, May 13, 2010 9:02 AM
> To: <winpcap-users at winpcap.org>
> Subject: Re: [Winpcap-users] Multiple instances
>
>> Yes, this was my first attempt but at full DL speed (~1,5 MB/s) the CPU
>> usage was to high :( since the packet flow is too large/fast
>>
>>
>> -----Original Message-----
>> From: winpcap-users-bounces at winpcap.org
>> [mailto:winpcap-users-bounces at winpcap.org] On Behalf Of Gianluca Varenni
>> Sent: Thursday, May 13, 2010 4:59 PM
>> To: winpcap-users at winpcap.org
>> Subject: Re: [Winpcap-users] Multiple instances
>>
>> If memory is an issue, then the best solution is opening a single 
>> instance
>> of the WinPcap device, and do your own filtering and demultiplexing in
>> user
>> mode. This could have the good side effect of having less kernel-user 
>> mode
>> transitions to bring the packets to user mode applications.
>>
>> Have a nice day
>> GV
>>
>> --------------------------------------------------
>> From: "pro2c" <pro2c at litrca.com>
>> Sent: Thursday, May 13, 2010 5:37 AM
>> To: <winpcap-users at winpcap.org>
>> Subject: Re: [Winpcap-users] Multiple instances
>>
>>> No, not 200 instances of my app but 200 instances of winpcap device to
>>> have
>>> 200 different filters (for each port).
>>>
>>>
>>> -----Original Message-----
>>> From: winpcap-users-bounces at winpcap.org
>>> [mailto:winpcap-users-bounces at winpcap.org] On Behalf Of David Chang
>>> Sent: Wednesday, May 12, 2010 10:08 PM
>>> To: winpcap-users at winpcap.org
>>> Subject: Re: [Winpcap-users] Multiple instances
>>>
>>> Why are you running 200 instances of your application on a single
>>> computer?  Do you have 200 NICs?  Maybe you can change your application
>>> to do more processing in one instance (i.e. multi-threading).
>>>
>>> DC
>>>
>>> pro2c wrote:
>>>>
>>>> I'm having some problems with multiple instances. When I load 200
>>>> instances the memory use of my app reaches 100MB. I'm guessing that
>>>> every instance reserves some mem for itself.
>>>>
>>>> Can this be lowered somehow?
>>>>
>>>> ------------------------------------------------------------------------
>>>>
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