[ofw] WinIB SRP driver and 64k IO's?

[Tzachi Dar]

Hi Steve,

There are two questions that I need to understand:
1) What SG lists are you talking about? The IB ones (post send/recive)?

2) why is 64kb not enough. Does the code send out one request and only
once it is finished it is sending the next request? Assuming you want to
reach to a BW of 1000MB/sec than this means that you should have a
request once every 64us.
Do you know if the time that it takes to handle a request is bigger that
64us?

Thanks
Tzachi 

> -----Original Message-----
> From: ofw-bounces at lists.openfabrics.org 
> [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of Steve Valimaki
> Sent: Monday, June 25, 2007 10:16 PM
> To: ofw at lists.openfabrics.org
> Subject: [ofw] WinIB SRP driver and 64k IO's?
> 
> Doing some basic testing (iometer, xdd) of the windows WinIB (Mellanox
> 1.3) SRP driver, its seems that I've not been able to get 
> larger the 64K IO's to my DataDirect Networks Storage array. 
> The host is Windows server
> 2003 SP2. I suspect it may be the need to increase the size 
> of the SG list, is there a known limitation?
> 
> Thanks,
> Steve
> 
> --
> Steve Valimaki
> Field Applications Engineer
> DataDirect Networks Federal LLC
> Cell Phone:   (443) 415-4947
> Office Phone: (410) 309-9300 x152
> 
> http://www.datadirectnet.com
> 
> DDN Support Announcement mailing list:
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> 
> 
> 
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