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Re: [Discuss-gnuradio] Misc questions, regarding Interrupt coalescing

From: Johannes Demel
Subject: Re: [Discuss-gnuradio] Misc questions, regarding Interrupt coalescing
Date: Tue, 22 Oct 2013 21:37:28 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.0

Unfortunately last nights mail didn't get to the mailing list. But here
it is.


first of all you might be interested in [1]. Depending on the actual
setup of your NIC latency depends a lot on interrupt coalescing. There
is also some further reading on this page.

Have fun

[1] http://code.ettus.com/redmine/ettus/projects/public/wiki/Latency

On 21.10.2013 13:19, Naceur wrote:
> Hello GR Forum,
> I got some questions:
> 1/ Did anyone already tested the effect of Interrupt coalescing on reducing
> the latency when host and USRP N2X0 are communicating and how far did he
> reduce this latency
> 2/ I want to check first if my NIC got this feature enabled ?
> How do I have to proceed to check then how to test ? 
> 3/ When running a stream of packets over the USRP I got the following error: 
> thread[thread-per-block[24]: <gr_block message_source (8)>]: msg length is
> not a multiple of d_itemsize  
> This error is raised after a fixed number N of successfully sent packets
> Could you please give me some hints on this issue.
> Best regards,
> --
> View this message in context: 
> http://gnuradio.4.n7.nabble.com/Misc-questions-regarding-Interrupt-coalescing-tp44285.html
> Sent from the GnuRadio mailing list archive at Nabble.com.
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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