Hi Nolan,

You don't have TCPNoDelay Yes in the server options file?   Also,
there are some recommendations for AIX network tunables in one of
the PSSP manuals (Admin Guide?).   These are the options you set
with the 'no' command.   Things like sb_max, etc.   Make sure
you set those at system startup.

--
Gene Mangum
Gene Mangum
University of Michigan Medical Center


On Sun, 6 Dec 1998, nolan rogers wrote:

> Dear All,
>
> I have just finished upgraded our company ADSM server to ADSM v3 but
> when I started the nightly incrementals off the performance from our SP
> nodes was terrible, a q sess showed they took nearly two hours to back
> up 1G of data where they were getting over 5G per hour before.
>
> The client nodes write straight to a large disk pool on the server (50G)
>
> The client software was upgraded at the same time, I used the Tuning
> Guide on the IBM storage website when creating the options files.
>
> Also the q sess showed that the servers are spending a lot of time in
> the recvw state which I do not remember happening before.
>
> here are the options files I am using:
>
> dsmserv.opt:
>    COMMmethod TCPIP
>    COMMmethod HTTP
>    SHMPort 1510
>    BUFPoolsize 32768
>    TXNGroupmax 256
>    VOLUMEHistory /adsm/volhist
>    VOLUMEHistory /usr/lpp/adsmserv/bin/volhist
>    DEVCONFIG /adsm/devconf
>    DEVCONFIG /usr/lpp/adsmserv/bin/devconf
>    TCPWindowsize 320
>    MOVEBatchsize 1000
>    MOVESizethresh 500
>
> dsm.opt:
>    SErvername      SPADSMSW
>    LANGUAGE     en_GB
>
> dsm.sys:
>    * Connection to ADSM server via SP switch
>    SErvername  SPADSMSW
>       COMMmethod                TCPip
>       TCPPort                   1500
>       TCPServeraddress          spadsms.sp.cg.uk
>       SCHEDMODe                 PRompted
>       LARGECommbuffers          Yes
>       TCPWindowsize             640
>       TCPBuffsize               32
>       TXNBytelimit              25600
>       TCPNodelay                YES
>       QUERYSCHedperiod          1
>
>       NODename                  UXFINLIV
>       PASSWORDAccess            Generate
>       SCHEDLOGName              /adsm/log/dsmsched.log
>       SCHEDLOGRetention         5
>       INCLExcl                  /usr/lpp/adsm/bin/inclexcl
>       PRESCHEDULECMD            "/usr/local/bin/pre_adsm"
>       POSTSCHEDULECMD           "/usr/local/bin/post_adsm"
>
> Any ideas on how to resolve this would be much appreciated as I have
> been doing this upgrade for about 16 hours now. We had a lot of nodes to
> upgrade!
>
> Nolan Rogers
> Cheltenham & Gloucester PLC
> Gloucester
> England
>
> nolan_rogers AT hotmail DOT com
>
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