Sponsored Content
Top Forums UNIX for Advanced & Expert Users UNIX Message Queues vs. Sockets Post 302111160 by zen29sky on Monday 19th of March 2007 05:02:47 PM
Old 03-19-2007
UNIX Message Queues vs. Sockets

If I use sockets for IPC, and can easily distribute my applications.
UNIX Message Queues are local to the processor.

As I understand it, Message Queues still incur system call overhead, just like socket calls.

What advantage does a UNIX Message Queue provide versus a TCP or UDP Socket, and when should they be used?
This User Gave Thanks to zen29sky For This Post:
 

10 More Discussions You Might Find Interesting

1. Programming

Message queues

Hi all, I've been trying for hours to figure out how to turn my 2-program (one to send and one to receive) "chat system" using message queues, into a single program where each concurrent component (entity) will both send and receive messages. PLEASE give me a hand with this, I'm starting to... (9 Replies)
Discussion started by: mgchato
9 Replies

2. UNIX for Dummies Questions & Answers

message queues

let 3 processes a, b and c are sharing msgs using msg queues.process 'a' sending msg to 'c' and in turn 'c' send sthat msg to 'b'.if something happens to c how can 'a' and 'b' know that 'c' is not available?????? (2 Replies)
Discussion started by: sukaam
2 Replies

3. Solaris

rogue message queues solaris 9

We have message queues created from our ERP system to our tax system via an application api written by the ERP software vendor. Occasionally when a user does not gracefully exit the ERP application, the message queue hangs. After a few months, this becomes a problem as the queues are all used... (2 Replies)
Discussion started by: MizzGail
2 Replies

4. Linux

maximun number of message queues

how to check the maximun number of message queues in current linux enviornment? is there any command ? (4 Replies)
Discussion started by: princelinux
4 Replies

5. Programming

shared memory and message queues

Hi, According to my understanding.. When message queues are used, when a process post a message in the queue and if another process reads it from the queue then the queue will be empty unlike shared memory where n number of processess can access the shared memory and still the contents remain... (2 Replies)
Discussion started by: rvan
2 Replies

6. UNIX for Advanced & Expert Users

message queues

#include <sys/ipc.h> #include <sys/msg.h> int main() { int qid; int t; struct msgbuf mesg; qid=msgget(IPC_PRIVATE,IPC_CREAT); mesg.mtype=1L; mesg.mtext=1; t=msgsnd(qid,&mesg,1,0); printf("%d",t); } the program prints -1 as the result of msgsnd ,which means that msgsnd doesn't... (1 Reply)
Discussion started by: tolkki
1 Replies

7. UNIX for Dummies Questions & Answers

message queues

can any body provide a tutorial that explains the concept of message queues in UNIX in great detail (1 Reply)
Discussion started by: asalman.qazi
1 Replies

8. Programming

Persisting message queues to disk

Hi, I have searched the forums and could not find a relavant thread discussing my use case, hence the new post. Basically am trying to pass on work to dummy worker instances from controller which will pass on work to workers (client) To make use of host capacity, am planning to serialize... (2 Replies)
Discussion started by: matrixmadhan
2 Replies

9. Shell Programming and Scripting

Cleaning Message Queues

i have an application installed on AIX 5.3 and i have made a script that shutdown a proccesses that exceeded 10000kb of memory usage but i have a problem with cleaning the message queues of these proccesses after shutting them down. Is there any way to clean the message queues for this particular... (8 Replies)
Discussion started by: Portabello
8 Replies

10. UNIX for Advanced & Expert Users

Performance calculation for Message Queues

i have a program(C++ Code) that sends/receives information through queue's (Uses MQ) Is there any UNIX/LINUX tool that calculates the load and performance time for the same. If not how do i design the program that calculates the performance time. i know that time.h can be used but it gives... (2 Replies)
Discussion started by: vkca
2 Replies
Log::Message::Handlers(3pm)				 Perl Programmers Reference Guide			       Log::Message::Handlers(3pm)

NAME
Log::Message::Handlers - Message handlers for Log::Message SYNOPSIS
# Implicitly used by Log::Message to serve as handlers for # Log::Message::Item objects # Create your own file with a package called # Log::Message::Handlers to add to the existing ones, or to even # overwrite them $item->carp; $item->trace; DESCRIPTION
Log::Message::Handlers provides handlers for Log::Message::Item objects. The handler corresponding to the level (see Log::Message::Item manpage for an explanation about levels) will be called automatically upon storing the error. Handlers may also explicitly be called on an Log::Message::Item object if one so desires (see the Log::Message manpage on how to retrieve the Item objects). Default Handlers log Will simply log the error on the stack, and do nothing special carp Will carp (see the Carp manpage) with the error, and add the timestamp of when it occurred. croak Will croak (see the Carp manpage) with the error, and add the timestamp of when it occurred. cluck Will cluck (see the Carp manpage) with the error, and add the timestamp of when it occurred. confess Will confess (see the Carp manpage) with the error, and add the timestamp of when it occurred die Will simply die with the error message of the item warn Will simply warn with the error message of the item trace Will provide a traceback of this error item back to the first one that occurred, clucking with every item as it comes across it. Custom Handlers If you wish to provide your own handlers, you can simply do the following: o Create a file that holds a package by the name of "Log::Message::Handlers" o Create subroutines with the same name as the levels you wish to handle in the Log::Message module (see the Log::Message manpage for explanation on levels) o Require that file in your program, or add it in your configuration (see the Log::Message::Config manpage for explanation on how to use a config file) And that is it, the handler will now be available to handle messages for you. The arguments a handler may receive are those specified by the "extra" key, when storing the message. See the Log::Message manpage for details on the arguments. SEE ALSO
Log::Message, Log::Message::Item, Log::Message::Config AUTHOR
This module by Jos Boumans <kane@cpan.org>. Acknowledgements Thanks to Ann Barcomb for her suggestions. COPYRIGHT
This module is copyright (c) 2002 Jos Boumans <kane@cpan.org>. All rights reserved. This library is free software; you may redistribute and/or modify it under the same terms as Perl itself. perl v5.18.2 2014-01-06 Log::Message::Handlers(3pm)
All times are GMT -4. The time now is 08:49 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy