ADSM-L

Re: ADSM/TSM-server

2001-08-27 04:21:12
Subject: Re: ADSM/TSM-server
From: Hervé CHIBOIS <herve.chibois AT ORNESS DOT FR>
Date: Mon, 27 Aug 2001 10:23:32 +0200
Hi Bert,

Yes there are !

If you TSM server is dédicated, depending on how much RAM you have, you can
adjust the ram used by TSM to ALL minus the network buffers you want.

Here is a sample for one of my small TSM Servers (256 MB RAM, 1 Eth 100, 1
Eth 10)

% no -a

        thewall = 8192        => 4096 * Nb network interfaces (but < 1/4
RAM) (Eth,TR,X25,FDDI)
         sb_max = 1048576
  tcp_sendspace = 655360
  tcp_recvspace = 655360
        rfc1323 = 1           => TCP Extensions for High Performance
(buffers > 65535)

%  lsattr -El sys0
maxmbuf     32768   Maximum Kbytes of real memory allowed for MBUFS   True
=> maxmbuf must be the same as

% lsattr -El ent1
tx_que_size   512             TRANSMIT queue size                True
rx_que_size   128             RECEIVE queue size                 True
media_speed   100_Full_Duplex Media Speed                        True
==> you can change the hardware buffers of your network card

To see avail values, just type

% lsattr -Rl ent1 -a tx_que_size


When you adjust, yous TSM BUFPOOLSIZE, check that you have enough RAM. If
bufpoolsize increases your swap files, you need more RAM. To see you much
RAM,
your TSM server uses, do the following :

% svmon -P <tsm_id>

    Pid                         Command        Inuse        Pin      Pgspace
11638                      dsmserv.42        55741         16        37293
Pid:  11638
Command:  dsmserv.42


Inuse * 4096 = used memory, if > than real RAM, you will have poor perf.

Good luck

Herve


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