Having too many connections could affect performance ? Post: 302991504

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Special Forums UNIX and Linux Applications Having too many connections could affect performance ? Post 302991504 by bakunin on Sunday 12th of February 2017 03:42:32 AM

02-12-2017

Registered User

Quote:

Originally Posted by alexcol

So Could you tell me if below theories could affect Performance ?

I run netstat command and displays more than 102 connections some of them established state, some of them time wait, etc. So the question is having many connections could affect the performance of the application?
If I killed and restart connections would be a good idea to improve performance?
Having one or more Filesystem backups could affect Performance too ?

Many network connections might affect performance, but right now it isn't even established if you have "many" of them. Connections in the stated of "TIME_WAITING" will not contribute to the load at all and your suggested solution of killing and restarting connections would definitely not help at all.

Running filesystem backups could very well degrade performance but if that is the case or not we can't say.

Quote:

Originally Posted by alexcol

T
which administrative commands can i use besides top for finding the stumbling blocks you mention and taking account the OS is obsolete ?

You might want to read this little introduction to performance tuning i wrote. Most of the tools mentioned there should work for you and most of the concepts explained there should apply to your server.

I hope this helps.

bakunin

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gong

GONG(1) 						      General Commands Manual							   GONG(1)

NAME

       gong - evaluate process performance

SYNOPSIS

       gong [-f] [-a] process-id

DESCRIPTION

       Gong is used to evaluate the performance of a process that is in execution.

       The  process-id	is  the process number of the process whose performance is to be evaluated.  The evaluation is performed by a set of three
       ``panelist'' routines, each of which analyzes one aspect (time, space, and tonality) of the performance of the process.	If  any  of  these
       routines is not amused by the performance, the process being analyzed is sent the gong(2) signal.  In addition, the process-id of the eval-
       uated process is written on the standard gong, for possible future corrective action.  (It is suggested that the standard gong be an  audi-
       ble alarm for proper effect.)  It is expected that after being gong(2)ed, the process will promptly commit suicide.

       The  -f	keyletter  argument  indicates	that  gong  is	to  invoke flog(1) with the unmerciful argument if the process does not respond to
       gong(2)ing.  In the absence of this argument, the process is continuously gong(2)ed, which may lead to the process becoming a deaf zombie.

       The -a keyletter argument indicates that if all three of the panelist routines gong(2)  a  process,  the  process  should  be  unmercifully
       flog(1)ged whether or not the -f keyletter is supplied.

FILES

       /dev/ding.dong is the standard gong.

SEE ALSO

       On  the	Applicability  of  Gonging to the Performance and Merit Review Process, Journal of Irreproducible Results, vol. 263, issue 19, pp.
       253-307.

BUGS

       If the named process does not exist, it is possible that gong will attempt an evaluation of itself, which may lead to a condition known	as
       compounded double ringing (see echo(1)).  Therefore, it is recommended that gong be used with extreme care.

																	   GONG(1)