Our UNIX admin did investigate and figured-out that change in LANG setting in /etc/environment has caused application to log process counts in log as Decimal instead of Integer and was told that LANG was changed to en_US from C.
There are many AIX facilities which are represented differently in various cultures. Language (of the man pages, of command status output, ...), how numbers are represented, keyboard layout and many other things. All this is controlled by some environment variables of which "LANG" is one (and probably the most important). Issue the "set" command and you will see "LANG", but probably also "LC_MESSAGES" and a few others.
It is possible to control this "language environment" for every process separately, simply by setting the language variable to a different value upon process start, like this:
Now for the role of "/etc/environment": as you have issued "set" you sure have noticed there are a lot of variables assigned. Most of these variables are not set explicitly by you, but get assigned default values. These system-wide default values are stored in "/etc/environment". Have a look at it, it is a simple text file with declarations in the form
Every time you log in your environment initially gets filled with these defaults. After this your own changes to the environment are being applied and you can change and override any of these defaults. You certainly have a special user for the program you are talking about. If you depend on the LANG variable to have a certain value it is a wise idea to explicitly set it in your startup scripts ("~/.profile") even if it is to the same value as the default. Even if the default changes your environment will remain as it is. I suggest to add a line
to your profile or shell startup script. The "export" keyword will make sure every process started from this process inherits this setting. Btw.: the same is true for other environment settings one of your programs depend on. Set these explicitly, even if it is to the same value the variable already has. When the default changes you avoid possible problems.
Hi all,
I am trying to set up some variables in a shell script. The variables contain values of various paths needed to run a java module. The problem is the variables dont seem to be setting at all.
here is what i am trying to do :
JAR_HOME=/home/was5/bdcms/scheduledjobs/lib
export... (6 Replies)
Hello
(Very New to UNIX -Solaris 10)
I'm trying to set the LANG variable to C but not sure if it's getting set, need some help on this.
Currently I have it set to en_GB.UTF-8
I need to set it to C for an install. but when I run set LANG=C and then run echo $LANG its still set to... (2 Replies)
Hi, first post. As the nick suggests I'm a Unix noob, but I'm doing everything I can to learn fast...job requirement. These forums have been a huge help so far.
I have a server running HP-UX 11.23b with Apache/2.0.59 HP-UX_Apache-based_Web_Server.
Apache is not installed in the default... (3 Replies)
Hi,
I already have one CPP program which invokes the C program.And the C program contains whole function definitions..!This is a working program..I have to enable the logs in both CPP as well as in the C program ..!So I am reading the enviornmental variable log path from the CPP and doing the... (2 Replies)
Hi
I am new to Solaris and was just given my id and need to setup my environment, what do i need to do to run certain commands without putting in the complete path.
How do I create my .profile, I do not see under my login?
Any help would be greatly appreciated. (5 Replies)
hi all,
I would appreciate if some one could explain me the difference between setting up the variables as shown below
HOME=${HOME:-"/home/user1"}
HOME=/home/user1 (1 Reply)
#!/bin/bash
if ; then
ASS1_DATA_DIR=./
echo $ASS1_DATA_DIR
export ASS1_DATA_DIR
echo "data dir"
fi
if ; then
ASS1_OUTPUT_DIR=./
export ASS1_OUTPUT_DIR
fi
I want to create a new environment variable ASS1_DATA_DIR and ASS1_OUTPUT_DIR in bash and set them to the current... (4 Replies)
Hi all,
This is my first post here. I need to set up a few environment variables with a shell script. Some are hard-coded, but some should come from other commands or as input from the user. How do I do that?
For example, I need to export a variable as such:
export DISPLAY=127.0.0.1:8.0
... (2 Replies)
I wish to setup LAMP environment. Amongst, I have successfully installed Linux 6.1. I am looking fwd to install - Apace Web Server, My Sql Database & PHP environment.
Say if I look for MySql, could see downloadable available in rpm format. But this must be copied over to Linux machine.
As... (2 Replies)
Hey guys,
I'm setting up a new server(Fujitsu M10-4 / Solaris 10 1/13) to move our app/DB and I'm having trouble figuring out why my LANG setting is not taking effect. I'm trying to set LANG=C in the /etc/default/init file which should make it the default system wide from what I gather. However... (7 Replies)
Discussion started by: kaledragule
7 Replies
LEARN ABOUT ULTRIX
cord2
cord2(1) General Commands Manual cord2(1)Name
cord2 - rearranges basic blocks in an executable file to facilitate better cache mapping.
Syntax
cord2 [-v] [-o outfile] [-c cachewords] [-d] [-b bridge_limit] [-n] [-A addersfile] [[-C countsfile] ...] obj
Description
The cord2 command extracts basic blocks from a program and deposits them in a new area in the text, making jumps to and from that area as
necessary. By separating the basic blocks, you can reduce instruction cache miss rates. The cord2 command takes the output of a pixie
profiling run as input (see
The executable object file has the suffix obj. The cord2 command only requires one addersfile; it creates the filename by appending .Bbad-
drs to the obj filename if none is specified with -A. Multiple counts files can be specified from many runs with multiple -C arguments. If
none are specified, cord2 creates the counts filename by appending .Counts to the obj name.
Multiple counts files are added together into an internal counts array represented with C double-type elements. The counts array elements
contain the density of a block or cycles/byte. If you specify -n, then the counts are normalized so that each counts array entry is
cycles/totalcycles. When one counts file is specified, the default is to favor small blocks; -n negates that. When many counts files are
specified, -n also negates favoring one counts file. This is because its totalcycles may exceed the totalcycles of another counts file.
The cord2 command determines which basic blocks to insert by sorting the counts array and collecting the blocks with the highest counts
that can fit into the new area. The cord2 command may skip over huge blocks that do not fit at the end of the new area.
Once the blocks are determined, they are inserted into the new area, and their original location is modified to jump to the new area. At
the end of each block in the new area, a jump is added back to the original block's subsequent or fall-through location, and the
branch/jump target (if necessary). Both entering and exiting the new area is optimized to take advantage of other blocks in the new area
and jump delay slots.
Often, there may be one or more fall-through blocks of a block in the new area which are small, hardly ever used, and not in the new area.
If the block following these fall-through blocks is in the new area, the fall-through blocks are called bridge blocks. It may be more
costly to generate jumps to and from bridge blocks rather than to simply copy them.
The cord2 command allows you to specify that bridge blocks be added to the new area if they total less than the bridge_limit instructions
between two new-area blocks. You can specify the bridge_limit with -b; the default is zero. Bridge blocks can bump blocks out of the new
area that might normally fit into it.
Because the cord2 command works from profile output, the resulting binary is data dependent. In other words, it may perform well only on
the same input data that generated the profile information, and may perform worse than the original binary on other data. Furthermore, if
the hot areas in the cache do not fit well into one cachepage, performance can degrade.
Options
The cord2 command also accepts these options:
-d Fill the delay slots with nops only when adding jumps to and from the new area.
-v Print verbose information. This includes statistics about the cord2 process.
-v -v
Print all of the -v information, but include detailed disassemblies of the code moved, changed, and generated by cord2.
-c cachewords
Specify the number of words in the cache of the machine on which you want to execute. This is actually the size of the new area. The
cachesize may be a misnomer, as you can specify a size other than your machine's cache size; however, it is probably the correct num-
ber.
-o outputfile
Specify the output file. If it is not specified, the default is a.out.cord2.
Restrictions
The cord2 command adds the new area to the end of text so any program using the etext symbol may not work. See
See Alsopixie(1), cord(1)
RISC cord2(1)