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Entry type: FAQ Entry ID: 276252, Entry date: 12/08/1999
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Buffer distribution on the CP1413

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QUESTION:
How can I change the buffer distribution on the CP1413?

ANSWER:
If there is a resources bottleneck on the CP1413, it can be avoided as follows:

  1. If, for example, you link several clients to the server, this could lead to resources bottlenecks on the CP1413. This is particularly true if you can only implement a 64-Kbyte Shared Memory Segment (with segment D0000). The link to a client needs at least 4 Kbytes per VC, i.e. for VC6/7 you need a sum of at least 8 Kbytes per client. On the other hand you only need about 528 bytes for the other VCs.
    You can set the buffer distribution of the CP1413 through entries in the /sinec/data/win/win_conf.dat file. The default setting is as follows:
    Excerpt from /sinec/data/win/win_conf.dat:
    dpram_size=0x10000
    num_channel=4
    numproc=2,5,5,5
    channel_name=ADM,IHI,MAC,SCP ; IHI = process communication ; SCP = FlexNet
    channel_type=SCP,IHI,MAC,SCP,SCP
    numhostbuffer=2,9,12,9
    numboardbuffer=2,9,6,9
  2. If you are not operating a Windows network via the CP1413, then you can remove the "MAC channel" and assign these resources to the "SCP channel". Likewise, you can reduce or completely remove the "IHI channel".
    Such a configuration looks like this:
    dpram_size=0x10000
    num_channel=3
    numproc=2,5,5
    channel_name=ADM,IHI,SCP ; IHI = process communication ; SCP = FlexNet
    channel_type=SCP,IHI,SCP
    numhostbuffer=2,4,26
    numboardbuffer=2,4,20
    This configuration gives the H1 link more than double the resources.
    Warning:
    The win_conf.dat file is recreated with the old values each time LSBSET is run. The changes must then be repeated. If a Windows network is required in addition to the H1 link, you can install it with an additional network card.

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