Mmap with fork : Resource unavaialable temporarily


 
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Operating Systems Solaris Mmap with fork : Resource unavaialable temporarily
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Old 07-11-2009
Mmap with fork : Resource unavaialable temporarily

installed 64bit 16GB VM on 64bit ESX server.

Written small C code to map the 2GB of memory by mmap after creating 3 child
and map getting failed by throwing "resource unavailable temporarily" after mapping 1.6 GB of memory out of 2GB. But same 1.5Gb memory mapping works fine.

I checked maximum memory limit to 3.7GB and even increased the memory limit by near 4GB by setrlimit() function. Then also behaving same thing

Can any body know on this issue, please let me know

Regards,
---------Siddu
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appender_type_mmap.h(3) 					       log4c						   appender_type_mmap.h(3)

NAME
appender_type_mmap.h - Log4c mmap(2) appender interface. SYNOPSIS
#include <log4c/defs.h> #include <log4c/appender.h> Variables __LOG4C_BEGIN_DECLS const log4c_appender_type_t log4c_appender_type_mmap Detailed Description Log4c mmap(2) appender interface. The mmap appender uses a fixed length memory mapped file for logging. The appender's name is used as the file name which will be opened and mapped to memory at first use. The memory mapped file is then used as a rotating buffer in which logging events are written. The following examples shows how to define and use mmap appenders. log4c_appender_t* myappender; myappender = log4c_appender_get('myfile.log'); log4c_appender_set_type(myappender, &log4c_appender_type_mmap); Warning: the file is not created at first use. It should already exist and have a reasonable size, a mutilple of a page size. Variable Documentation __LOG4C_BEGIN_DECLS const log4c_appender_type_t log4c_appender_type_mmap Mmap appender type definition. This should be used as a parameter to the log4c_appender_set_type() routine to set the type of the appender. Author Generated automatically by Doxygen for log4c from the source code. Version 1.2.1 Mon May 2 2011 appender_type_mmap.h(3)