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Full Discussion: about TCP connection
Top Forums UNIX for Advanced & Expert Users about TCP connection Post 302117497 by sumitpandya on Tuesday 15th of May 2007 01:16:19 AM
Old 05-15-2007
Give us header of "application log connection:". Example
Local-Port Remote-IP:Port ??? Connection-Time ??? ?? ????
0500 ( 192.168.0.1:36053) 00919 2007/05/10 23:30:25 112 13 2007/05/10 23:30:25 1969/12/31 17:00:00

pseudo code of your server will be very helpful to help you

You can use tcpdump/ethereal to see what is happening b/w both client and server... Simply "snoop" packets for "port 500".

At instance i can think of tunning Kernel-TCP/IP parameters and reduce idle-timeout. In SunOs you can use ndd and in Linux you can use sysctl (/proc/sys/net/ipv4)

All the best.
 

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IBPING(8)							Open IB Diagnostics							 IBPING(8)

NAME
IBPING - ping an InfiniBand address SYNOPSIS
ibping [options] <dest lid | guid> DESCRIPTION
ibping uses vendor mads to validate connectivity between IB nodes. On exit, (IP) ping like output is show. ibping is run as client/server. Default is to run as client. Note also that a default ping server is implemented within the kernel. OPTIONS
-c, --count stop after count packets -f, --flood flood destination: send packets back to back without delay -o, --oui use specified OUI number to multiplex vendor mads -S, --Server start in server mode (do not return) Addressing Flags -L, --Lid The address specified is a LID -G, --Guid The address specified is a Port GUID -s, --sm_port <smlid> use 'smlid' as the target lid for SA queries. Port Selection flags -C, --Ca <ca_name> use the specified ca_name. -P, --Port <ca_port> use the specified ca_port. Local port Selection Multiple port/Multiple CA support: when no IB device or port is specified (see the "local umad parameters" below), the libibumad library selects the port to use by the following criteria: 1. the first port that is ACTIVE. 2. if not found, the first port that is UP (physical link up). If a port and/or CA name is specified, the libibumad library attempts to fulfill the user request, and will fail if it is not possible. For example: ibaddr # use the first port (criteria #1 above) ibaddr -C mthca1 # pick the best port from "mthca1" only. ibaddr -P 2 # use the second (active/up) port from the first available IB device. ibaddr -C mthca0 -P 2 # use the specified port only. Configuration flags --config, -z <config_file> Specify alternate config file. Default: /etc/infiniband-diags/ibdiag.conf -t, --timeout <timeout_ms> override the default timeout for the solicited mads. Debugging flags -h, --help show the usage message -d raise the IB debugging level. May be used several times (-ddd or -d -d -d). -e show send and receive errors (timeouts and others) -v, --verbose increase the application verbosity level. May be used several times (-vv or -v -v -v) -V, --version show the version info. FILES
CONFIG FILE /etc/infiniband-diags/ibdiag.conf A global config file is provided to set some of the common options for all tools. See supplied config file for details. AUTHOR
Hal Rosenstock < halr@voltaire.com > IBPING(8)
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