spirtle gave you geat advice - usually 90% of bottlenecks are caused by algorithm choice. Some others unavoidable...
Do you know how to profile code?
compile
Run the code, then try
This will show the time spent in each function - so you can locate the botteleneck.
Read the info page or man page for gprof.
By the way - it appears like you are compiling C code with a c++ compiler? Is that the case? If so, use gcc, not g++
Hi,
I have prepared script which is taking more time to process. find below script and help me with fast optimized script:-
cat name.txt | while read line
do
name=$(echo $line| awk '{print $8}')
MatchRecord=$(grep $name abc.txt | grep -v grep )
echo "$line | $MatchRecord" | awk... (2 Replies)
Hello everyone,
Today we are attempting to port some legacy C code to a 64 HP-UX machine at my company and there is kind of a strange error we ran into.
there is a small function they have defined called zgetenv that
accepts a char* and basically just does some null checking and returns ... (0 Replies)
Hello All,
Hope all is fine. I am newbie to Unix. I am using Bourne Shell (sh). One of the question I have is that I am trying to read XML file and based on reading that XML file I want to run same java programs at different hours. When I run the Java code, I wanted to pass parameters to my... (1 Reply)
(gdb) r --------------------- enter
Breakpoint 1, 0x0000000000409d40 in main ()
(gdb) n
Single stepping until exit from function main,
which has no line number information.
Find_Cmd_Option: found option no. 2: seed (s)
Find_Cmd_Option: found option no. 5: dfile (c)
Initial no. div... (1 Reply)
I'm running a query similar to the one that I'm describing below -:
_______________________________
EXEC SQL INSERT INTO TABLE1
( C1
,C2
,C3
,C4 )
(SELECT DISTINCT B.V1
,B.V2
,( SELECT D.V3 FROM TABLE2 D WHERE D.V3 = C.V4)
,B.V4
FROM TABLE2 B ,TABLE3 C
WHERE B.V3 = C.V4) ;... (1 Reply)
Hello,
On Aix 5.2, we changed the parameters tcp_keepinit, tcp_keepintvl and tcp_keepidle with the no command.
tunrestore -R is present in inittab
in the directory /etc/tunables we can clearly see the inclusion of parameters during reboot, including the file lastboot.log
... (0 Replies)
Hello All,
I am interested in finding out a way to pass parameters that are entered at the prompt from HP unix and passed to SQLPlus code with a Shell Script. Is this possible?
Thanks (4 Replies)
Need assistance in Source code compilation .
When installing a software compiling a source code . Whatever the output that prints on the screen i want to log it into a file. How can i see output and store the output to file
./configure
make
make install
Is there other way of seeing output... (5 Replies)
Hi all
I wrote below code:
#!/bin/sh
R='\033
do you have any idea how to optimize my code ? (to make it shorter eg.) (11 Replies)
Discussion started by: primo102
11 Replies
LEARN ABOUT DEBIAN
faucc
FAUCC(1)FAUCC(1)NAME
faucc - C compiler generating Intel code for 16 bit/32 bit CPUs.
SYNOPSIS
faucc [ -B path ] [ -D MACRO [=def]] [ -E ] [ -I path ] [ -L path ] [ -MD ] [-MF file ] [ -MP ] [ -MT target ] [ -O level ] [ -S ]
[ -T script ] [ -U macro ] [ -Wl,arg ] [ -Xlinker arg ] [ -b arch ] [ -c ] [ -f arg ] [ -m arch ] [ -nostdlib ] [ -o output ]
[ -print-lib-faucc-file-name ] [ --freestanding ] [ --no-stack-protector ] { file ...}
DESCRIPTION
faucc is a C compiler, that can generate Intel 16 bit or 32 bit Code.
OPTIONS
faucc tries to mimic the options of gcc. A number of options will be passed to the C preprocessor cpp or to the linker (done via a call to
the c-compiler gcc) in unmodified form.
-B path
Override the directory prefix where cc1 is looked up with path.
-D MACRO, -D MACRO=def
Define MACRO with the optional initial definition def. If def is omitted, it defaults to 1.
-E
Only perform preprocessing, but do not run the compiler.
-I path
Add path to the include path in which header files are searched.
-L path
Add path to the library search path, in which the linker will look for libraries.
-MD
Output dependency information while preprocessing.
-MF, file
Output dependency information while preprocessing to file.
-MP,
When the preprocessor should output dependency information, it will generate PHONY targets for each dependency.
-MT target
When the preprocessor should output dependency information, use target as the dependency rule target.
-O level
Currently ignored.
-S
Output assembly code.
-T script
Use script as linker script.
-U macro
Undefine a previously defined macro.
-Wl,arg, -Xlinker arg
Pass arg to the linker.
-b arch
Generate code for arch (either i286 or i386)
-c
Perform compilation, but do not link.
-f arg
Pass code generation argument arg to the compiler. See the cc1 man page for possible arguments.
-m arch
Currently ignored.
-nostdlib
With this option, the linker will only search for libraries that are passed as command line arguments.
-o file
Write output to file.
-print-libfaucc-file-name
Print the full path of the internal compiler library libfaucc.a.
-static
Perform static linking.
--freestanding, --no-stack-protector
Currently ignored.
EXAMPLES
faucc -c hello-world.c -o hello-world.o
Compile the program hello-world.c and output the object as hello-wolrd.o.
faucc -S -b i286 -o test.s test.c
Compile the program test.c to 16 bit code and output the assembly listing to test.s, but do not assemble or link the result yet.
SEE ALSO cc1(1) , cpp(1) , gcc(1) , ld(1)CONTACT
Please report all bugs to FAUcc Team <info@faumachine.org>. FAUcc Homepage [1].
AUTHOR
FAUcc Team
COPYRIGHT
Copyright (C) 2009 FAUcc Team. Developed at Friedrich Alexander University Erlangen-Nuremberg.
FAUcc comes with ABSOLUTELY NO WARRANTY. FAUcc is free software; you can redistribute it and/or modify it under the terms of the GNU
General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
version. See COPYING for details.
NOTES
1. FAUcc Homepage
http://www.faumachine.org
FAUcc Team 03/08/2009 FAUCC(1)