Re: NFS performance problems on vxWorks

[Andrew Johnson <anj@aps.anl.gov>]

Hi Dirk,

Dirk Zimoch wrote:
> It seems, our BSP is not using the End driver. I don't have a sysEnd.c 
> file. I have a configNet.h file, that defines a network config string:

You probably are using and end driver, it just doesn't use the setup I 
described.  Your load string defines the parameter you need to modify. 
Change this:

> #define DEC_LOAD_STRING "0xfe020000:0x0:0x12:0x12:-1:-1:-1:0:0x80000000"

into this:

#define DEC_LOAD_STRING "0xfe020000:0x0:0x12:0x12:128:-1:-1:0:0x80000000"

The individual parameters are described in the vxWorks documentation for 
the dec21x40End library (section 1), which explains that the default vaue 
for <nrds> is 32; increasing that should significantly improve your NFS 
performance on a busy network.

Note that in recent versions of the driver (provided with WRS patches or a 
recent version of Tornado), there are several more optional parameters 
that can control the network MII phy interface.  These may not be 
documented other than in the source code.

- Andrew
--
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the sunset you made last night.  That was really cool. - Caro