ScreenOS Firewalls (NOT SRX)
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Posts: 1
Registered: ‎07-01-2009
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NS-208 high memory utilization

I have 2 NS-208 running HA, but both memory usage are high. I tried to get the memory pool info and it shows that


FW1 -> get memory
Memory: allocated 78406960, left 13104736, frag 390

FW1 -> get memory pool
Global memory pools:
Routing           16436      488          41         1050      0            -1
JPS Context     8220       20             1           340      0            -1
idp              4875732  4376380  8406606  18076      0       26943488
net                  24572        0             0                 0      0             -1
Auth Id Table          0        0             0                 0      0             -1
NET-PAK     196048        0             0             565      0       11534336   
PKI-IKE        488824   414816    10679         728  38813          -1

FW1 -> get memory kernel
Memory: allocated 74297504, left 13019936, frag 174, heap block: 0

FW1 -> get memory ipc
Memory: allocated 4110464, left 83792, frag 217, heap blocks: 0

It show there are lot of memory allocated to idp, but idp is disable in this box.


FW1->get lic
NSRP:               ActiveActive
VPN tunnels:        1000 tunnels
Vsys:               None
Vrouters:           3 virtual routers
Zones:              15 zones
VLANs:              32 vlans
Drp:                Enable
Deep Inspection:    Enable
Deep Inspection Database Expire Date: Disable
Signature pack:     Signature update key is missing
IDP:                Disable
AV:                 Disable(0)
Anti-Spam:          Disable(0)
Url Filtering:      Disable


Would need some advice. Thanks

Super Contributor
Posts: 141
Registered: ‎11-18-2008
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Re: NS-208 high memory utilization

If memory utilization is not increasing, you shouldn't worry about this.


If you are still concern about high memory, you can decrease the maximum number of sessions via command "set envar max-session=100000" .to decrease the allocated memory allocation.


You need to reboot the box for this command to take effect.

New User
Posts: 1
Registered: ‎01-07-2010
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Re: NS-208 high memory utilization

I just upgraded two ns-208 in HA devices from 5.2 to 5.4 and noticed the same problem. It really makes me concerned as I don't know what could happen if a resource intensive processing happend, (Attack, Flooding, ...)


I was wondering if there are any software features in 5.4 that can be disabled in order to reduce the memory utilization.


In my case it was shy over 60% while using 5.2, it is now over 90%...

Posts: 13
Registered: ‎04-14-2008
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Re: NS-208 high memory utilization

   We have the exact same problem with our NS208's. Memory utilization 85-90% with the IDP process using the majority, despite not have IDP activated. Was there ever a solution to this?