memory usage grows up daily in unexpected way

Good morning,

 

 

We have a pair of two LTMs 1500 appliances. They are loadbalancing BEA WEBLOGIC servers and iPlanet servers. We are having problems due to memory. The memory grows up daily (40 Megas per day) in each system. When the memory reaches 260 Megas approximately, the active system reboots. I have a case opened with support and they tell me that in the qkviews, it seems as if the problem is related to the iRules we have configured in order to maintain universal persistence with BEA WEBLOGIC Severs and iPlanet servers.

 

The iRules we have configured are:

 

 

rule Persist_iPlanet {

 

when HTTP_REQUEST {

 

if { [HTTP::cookie exists WEBSRV] } {

 

persist uie [HTTP::cookie WEBSRV];

 

 

}

 

}

 

 

when HTTP_RESPONSE {

 

if { not [HTTP::cookie exists WEBSRV ] } {

 

set ip_srv [IP::server_addr];

 

set valor [ string range $ip_srv [ expr [string last . $ip_srv ] + 1] 15];

 

set val_cookie "WEBSRV=$valor; path=/"

 

HTTP::header insert Set-Cookie $val_cookie;

 

persist add uie $valor;

 

}

 

}

 

}

 

rule Persist_Weblogic {

 

when HTTP_REQUEST {

 

if { [HTTP::cookie exists WLSRV] } {

 

persist uie [HTTP::cookie WLSRV];

 

 

}

 

}

 

 

when HTTP_RESPONSE {

 

if { not [HTTP::cookie exists WLSRV ] } {

 

set ip_srv [IP::server_addr];

 

set valor [ string range $ip_srv [ expr [string last . $ip_srv ] + 1] 15];

 

set val_cookie "WLSRV=$valor; path=/"

 

HTTP::header insert Set-Cookie $val_cookie;

 

persist add uie $valor;

 

}

 

}

 

}

 

rule Adapta_SecureConnection {

 

when HTTP_REQUEST {

 

if { [HTTP::header SecureConnection] equals "true" } {

 

HTTP::header replace "WL-Proxy-SSL" true;

 

}

 

HTTP::header remove SecureConnection;

 

}

 

}

 

Perhaps the problem is because the Persistence table grows and it is not erased properly...?

 

Perhaps the problems is due to the timeouts...if so, when can we configure it and how (in an appropiate way)?

 

Perhaps we have to change some parameters/commands in the iRules?

 

 

We are having this problem from the beginning of the installation and we do not know what to do.

 

I would appreciate your help very much!!

 

Thanks in advance,

 

María