Having too many connections could affect performance ? Post: 302991310

Sponsored Content

Special Forums UNIX and Linux Applications Having too many connections could affect performance ? Post 302991310 by Don Cragun on Thursday 9th of February 2017 12:27:53 AM

02-09-2017

Registered User

With what you have told us, the application could be a huge bottleneck, the application server could be a huge bottleneck, the database server could be a huge bottleneck, the database application could be a huge bottleneck, or any combination of the above could be a bottleneck.

Running a filesystem backup while running applications that are using files on that filesystem is VERY likely to affect performance of those applications and of the backup software.

We have seen examples in this forum of text processing code that invokes several processes to produce output for each line read from a file containing a few thousand lines that literally ran for more than 10 hours. When that code was replaced by a single awk script with the output fed into sort, the script ran in less than 10 seconds and produced exactly the same output. Could your application code have a similar issues?

To figure out where you need to look, you first need to know what are your major stumbling blocks. Are you swapping processes in and out a lot? (Need more memory?) Are your disks thrashing? (Put files on different filesystems on different disks/controllers?) Are your CPUs running at 100%? (Badly written code or too many users on your system?) Is your network dropping packets? (Loose connections, faulty routes to servers, failing hardware, etc.?) ... ... ...

Don Cragun

View Public Profile for Don Cragun

Find all posts by Don Cragun

8 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

changig uid and the affect it will have

Hello, I have 2 sun servers. We are running Oracle apps. We have to apply patches to both servers whenever a patch needs to be applied for Oracle. We use the same username eg. applmgr on both servers. We have a shared patch area which we can run the patch from on both boxes. the uid for...

2. Solaris

making new default gateway take affect

How do you make the changes take affect when you change the subnet masks or default router without rebooting?

3. Shell Programming and Scripting

affect variable

hi , i want to store variable but i get always error when i excute this command ligne : var = awk '{print $1}' file1 echo $var how can i store the var? thanks

4. Solaris

Will Password change affect authorized_keys?

Hello gurus, I have question. I have enabled ssh on the servers. I am planning to change the oracle user's(os user) password. If I change the password will it affect the authorized_keys? Do I need to regenerate it. Thanks,

5. UNIX for Dummies Questions & Answers

.profile - changes don't affect the login

I have modified the .profile in my profile and I don't see any effect. Why the changes don't have effect? I tried both on the account at a server where I have limited permissions as user and to my local pc (as user). Is it the .profile overridden by some other file? It looks weird because I...

6. Solaris

Will creating symbolic links affect users

Hi, I have a quick question with regards to creating symbolic links. Would creating a symbolic link from one directory to a file in another cause any issues for users that are currently logged into the box. I don't believe it will unless they are using the file in question, but I would like...

7. Shell Programming and Scripting

affect a exploded a string into an array

I would like to affect an exploded string into an array. one:two::fourinto an array: a => one a => two a => a => four Quite simple in other languages with functions like explode() or split(). The best I could come up with was this: until do token=${string%%:*} # takes the...

8. Shell Programming and Scripting

Bash script affect load average

Hello I have created next scritpt to do the next: chekp if host is alive. When the host down, launch telnet other equip to do checks. When execute the script the load average of the machines increase. For example: Before launch script top - 11:14:56 up 14 days, 18:06, 3 users, load...

LEARN ABOUT DEBIAN

rlm_detail

rlm_detail(5)							 FreeRADIUS Module						     rlm_detail(5)

NAME

       rlm_detail - FreeRADIUS Module

DESCRIPTION

       The rlm_detail module writes radius packets to 'detail' files.  It is primarily used for storing accounting information, but can be used in
       other sections to write packet details as well.

       The file format is similar to that of the old Livingston servers, and many 'detail' file parsers should work with FreeRADIUS.

       The main configuration items to be aware of are:

       detailfile
	      The file name in which to store the radius packet records.  NOTE: this variable is run through dynamic  string  expansion,  and  can
	      include FreeRADIUS variables to create a dynamic filename.

	    %{radacctdir}/%{Client-IP-Address}/detail-%Y%m

	    This will create one file per month, for each client.
	    This accomplishes 'file rotation' automatically from
	    within the server.

       detailperm
	      The file permissions of the detailfile.  If omitted, the default is 0600.

       dirperm
	      The directory permissions of the directory where the detail files are created.  The default is 0755.

       locking
	      This  option  is	set  to  'yes'	or  'no'.   By default it is 'no'.  Set this to yes to enable file locking, which is used with the
	      'radrelay' program.

CONFIGURATION

       modules {
	 ...
	 detail {
	   detailfile = %A/%{Client-IP-Address}/detail-%Y%m
	   detailperm = 0600
	   dirperm = 0755
	   locking = no
	 }
	 ...
       }
	 ...
       accounting {
	...
	detail
	...
       }

SECTIONS

       authorization, accounting, pre_proxy, post_proxy, post_authentication

FILES

       /etc/raddb/radiusd.conf

SEE ALSO

       radiusd(8), radiusd.conf(5)

AUTHORS

       Chris Parker, cparker@segv.org

								  5 February 2004						     rlm_detail(5)