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Re: Issue in webdispatcher load balancing on SAP system (running on mix of HP_UX and Linux servers)

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Hi Samuli,

 

We have ,

 

1] SAP Web Dispatcher Version 7.20.0, multithreaded, ASCII, 64 BIT

 

kernel information
------------------
system name =
kernel release = 720
database library =
compiled on = HP-UX B.11.23 U ia64
compile time = Apr 27 2013 11:40:01
update level = 0
patch number = 426
source id = 0.426

 

2] Webdispatcher configuration:- [sapwebdisp.pfl]

 

# Profile generated by sapwebdisp bootstrap

# unique instance number
SAPSYSTEM = <xx>

# add default directory settings
DIR_EXECUTABLE = .

DIR_INSTANCE = .

# Accessibility of Message Servers
rdisp/mshost = <hostname>
ms/http_port = 81<xy>
icm/host_name_full = <fqdn>
wdisp/load_balancing_strategy = weighted_round_robin
wdisp/server_info_location = file:///usr/sap/<SID>/sapwebdisp_720/serverinfo.icr

# SAP Web Dispatcher Parameter
wdisp/auto_refresh = 120
#wdisp/max_servers = 100
wdisp/max_servers = 128

wdisp/shm_attach_mode = 6

# configuration for large scenario
icm/max_conn      = 16384
icm/max_sockets   = 16384
icm/req_queue_len = 6000
icm/min_threads   = 100
icm/max_threads   = 250
mpi/total_size_MB = 500
mpi/max_pipes     = 21000

#maximum number of concurrent connections to one server
wdisp/HTTP/max_pooled_con = 2000
wdisp/HTTPS/max_pooled_con = 2000
wdisp/HTTPS/dest_logon_group = <SID>
# SAP Web Dispatcher Ports
icm/server_port_0=PROT=HTTP,PORT=8011,TIMEOUT=3600,PROCTIMEOUT=7200
icm/server_port_1=PROT=HTTPS,PORT=44310,TIMEOUT=3600,PROCTIMEOUT=7200

# SAP Web Dispatcher Web Administration
icm/HTTP/admin_0 = PREFIX=/sap/wdisp/admin,DOCROOT=./admin,AUTHFILE=icmauth.txt

ssl/ssl_lib=/usr/sap/<SID>/sapwebdisp_720/libsapcrypto.so
ssl/server_pse=/usr/sap/<SID>/sapwebdisp_720/sec/SAPSSLS.pse
ssl/client_pse=/usr/sap/<SID>/sapwebdisp_720/sec/SAPSSLC.pse
icm/HTTPS/verify_client=0
wdisp/ssl_encrypt=1
wdisp/add_client_protocol_header=true
# ICM Timeout
icm/keep_alive_timeout = 3600

 

3] In

 

serverinfo.icr file : we have placed the two linux servers first (which are better sized) in order followed by the remaining two HP-UX server. Linux server both have DIA=50 and HP-UX server each have DIA=20 and 17 resp.

 

For SMLG we have logon groups, where all 4 servers are assigned to all the logon groups.

 

Please help suggest.

 

Thanks & Regards,

Ashish


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