ITS load balancing issue

Hi all,
During our testing we are getting a load balancing issue.  However, one of the agates in our network is has more CPU power than compared to the other agates in our ITS network.  The memory on all the agate servers is the same. 
Our current issue we are getting is the one agate that has more cpu power but acquires more sessions as compared to the other two agates.  It roughly gets 60 more sessions per agate process as compare to the other Agate servers.  Does having more cpu on a Agate affect the load balancing on ITS?  We are on ITS patch level 19 with the Hotfix. 
Thanks,
Jin Bae

Hello Jin,
yes, at (re)initialize the WGate retrieves the capacity from the AGates.
This is an accumulated number based on CPU performance and the number of CPUs!
The number can be seen in "wgate-status" as the "Capacity" of the AGate.
When running multiprocess Agates the number is retrieved from the MManager and also involves the number of agate-processes.
The WGate dispatches the load in proportion depending on these capacity numbers.
By my knowledge there is no way that these values can be configured (fixed).
Regards,
  Fekke

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    If disabled, the associated message producers are load balanced on the first send() or publish().
    Privileges     Read/Write
    Type     boolean
    Default Value     true
    ServerAffinityEnabled
    Specifies whether a server instance that is load balancing consumers or producers across multiple members destinations of a distributed destination, will first attempt to load balance across any other physical destinations that are also running on the same server instance.
    Privileges     Read/Write
    Type     boolean
    Default Value     true
    Edited by: mneelapu on Oct 12, 2009 11:16 AM

  • Server Load balancing issues

    the servers are loadbalancing between the switches '3'
    and '2' and the link between the two switches is blocked.
    This link was forwarding before and thus any traffic going to the server was
    send to the Servers correctly no matter on which switch they are active.
    However after addition of another link in between the switches 'root'
    and '1', the path cost to the root has decreased and thus the link
    between the '2' and '3' is Blocking and the other link between
    the '2' and '1' is Forwarding as it should be ideally. But
    this would be creating an issue because the trafic coming from outside i.e.
    through switch '1' to the server will be correctly send to the
    server if the server NIC is active on the '3' because the Virtual MAC
    addresses are binded accordinlgy. In case the server falls onto the other
    NIC which is on the '2' the traffic won't be able to pass because the
    MAC address is not binded on the trunk connecting the switches '1'
    and '2'. This binding cannot be done because the same MAC address is
    being learned on the another trunk on the '1' which is connecting
    to 'root'. So if we bind the same Virtual MAC on two trunks on the same
    switch ('1') then this will cause MAC Address Flapping on the
    switch and hence canot be done.
    In another case,we can able to bind virtuak MAC on two trunks on the same
    switch('1') and it's working fine.
    The servers are load balancing in round robin fashion. each server has 2 NICs and work in Active-Passive mode. The servers load balance each other when all their active links are connected to '3' switch but when two of the active NICs of two servers are connected to '3' and the rest of the two active NICs from the other two servers are connected to '2' switch then only the forst 2 servers load balance and the other 2 servers do not load balance.
    Please help.
    Thanks in advance.

    In my experience, server load balancing is one of the most difficult things to get going properly in a switched LAN environment. Switched LANs are designed so that one MAC address can only be bound to one switch port. Therefore, if you have two NICs with the same MAC address (real or virtual), then you will get flapping somewhere.
    I have seen various ways that the manufacturers try to get around this limitation of switched LANs. For example, one technique I have seen, practiced by ISA Server, is to use a multicast MAC address for the service so that frames go to both exit ports. But that does not always work well unless you tweak the network to acommodate it.
    What sort of servers are they, and what system is used for the load balancing?
    Kevin Dorrell
    Luxembourg

  • ACE load balancing issue

    Hi,
    I have ACE module and 2 servers the problem i am facing is only one server is been serviced by ACE the other server is not getting much traffic at all.
    One server gets hit most of the time like 3 pkts goes to server 1 and 1 pkt goes to server 2.
    Could anyone tell me why is this issue that unequal load balancing is occoring on my device.
    Thanks in advance.

    here's the output of
    sh serverfarm det
    serverfarm : DNS, type: HOST
    total rservers : 2
    active rservers: 2
    description : -
    state : ACTIVE
    predictor : ROUNDROBIN
    failaction : -
    back-inservice : 0
    partial-threshold : 0
    num times failover : 0
    num times back inservice : 0
    total conn-dropcount : 0
    Probe(s) :
    DNS_PROBE, type = DNS
    ----------connections-----------
    real weight state current total failures
    ---+---------------------+------+------------+----------+----------+---------
    rserver: DNS-118-1
    10.0.0.1:0 8 OPERATIONAL 206 127901 1
    max-conns : - , out-of-rotation count : -
    min-conns : -
    conn-rate-limit : - , out-of-rotation count : -
    bandwidth-rate-limit : - , out-of-rotation count : -
    retcode out-of-rotation count : -
    load value : 0
    rserver: DNS-118-2
    10.0.0.2:0 8 OPERATIONAL 230 212332 4
    max-conns : - , out-of-rotation count : -
    min-conns : -
    conn-rate-limit : - , out-of-rotation count : -
    bandwidth-rate-limit : - , out-of-rotation count : -
    retcode out-of-rotation count : -
    load value : 0
    here's the output of
    sh service-policy L3L4_LOADB detail
    Status : ACTIVE
    Description: -----------------------------------------
    Context Global Policy:
    service-policy: L3L4_LOADB
    class: CLASS_MAP
    nat:
    nat dynamic 1 vlan 118
    curr conns : 325 , hit count : 340457
    dropped conns : 5
    client pkt count : 2697687 , client byte count: 179735431
    server pkt count : 2694477 , server byte count: 535957631
    conn-rate-limit : 0 , drop-count : 0
    bandwidth-rate-limit : 0 , drop-count : 0
    VIP Address: Protocol: Port:
    10.0.0.3 tcp eq 53
    10.0.0.3 udp eq 53
    loadbalance:
    L7 loadbalance policy: L7_LOADB
    VIP Route Metric : 77
    VIP Route Advertise : ENABLED-WHEN-ACTIVE
    VIP ICMP Reply : ENABLED-WHEN-ACTIVE
    VIP State: INSERVICE
    curr conns : 325 , hit count : 340462
    dropped conns : 5
    client pkt count : 2697687 , client byte count: 179735431
    server pkt count : 2694477 , server byte count: 535957631
    conn-rate-limit : 0 , drop-count : 0
    bandwidth-rate-limit : 0 , drop-count : 0
    L7 Loadbalance policy : L7_LOADB
    class/match : class-default
    LB action: :
    primary serverfarm: DNS
    state: UP
    backup serverfarm : -
    hit count : 340457
    dropped conns : 0

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