[openib-general] OFED RC4 also can't support >2000 connections

[Eitan Zahavi]

Hi Zhu,

If you are using libsdp.conf to select which ports should map to SDP and
which to TCP you might run out of resources for tracking the opened
sockets. 

Try increasing the following constant in libsdp:
libsdp/src/port.c line 48:
#define MAPPED_SOCKET_MAX	1024
to something like:
#define MAPPED_SOCKET_MAX	10000

Or, if you can use SDP sockets only (your config file is empty anyway):
SIMPLE_LIBSDP=1 LD_PRELOAD=libsdp.so squid -d 10 -f squid.conf
SIMPLE_LIBSDP=1 LD_PRELOAD=libsdp.so ./lt-ab -c 2000 -n 2000 -X
193.12.10.14:3129

Hope this fixes the issue you see

Eitan Zahavi
Senior Engineering Director, Software Architect
Mellanox Technologies LTD
Tel:+972-4-9097208
Fax:+972-4-9593245
P.O. Box 586 Yokneam 20692 ISRAEL


> -----Original Message-----
> From: openib-general-bounces at openib.org [mailto:openib-general-
> bounces at openib.org] On Behalf Of zhu shi song
> Sent: Wednesday, May 17, 2006 3:17 PM
> To: openib-general at openib.org
> Subject: [openib-general] OFED RC4 also can't support >2000
connections
> 
> I have installed OFED RC4 on my RHEL 4.3(2.6.9-34
> kernel). I use the same method I told in previous
> mail.  When increasing concurrent sdp connection to
> 2000. sdp refuse connection in server side. And client
> can't connect to server through sdp connection
> forever.
> 
> OS: RHEL 4.3 (2.6.9-34)
> IB: OFED RC4
> Test Method:
>     Server: LD_PRELOAD=libsdp.so squid -d 10 -f
> squid.conf( sdp listening on IB0: 193.12.10.14:3129)
>     Client: LD_PRELOAD=libsdp.so ./lt-ab -c 2000 -n
> 2000 -X 193.12.10.14:3129
> http://www.google.com/index.html ( IB0: 193.12.10.24)
> 
> 
>     Who know what's wrong with sdp many concurrent
> connections?  I have bought the cards for about 3
> weeks, but I can't make them work correctly.  Urgent!
> 
>     tks
>     zhu
> 
> 
> 
> 
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