Robert Mullenax wrote:
>
> We are trying to troubleshoot some I/O problems we are having..and a
> question came up from
> our sysadmin which I don't know. What is the block size of the data that
> the LDM is writing
> out? Is it standard 8K blocks?
>
> Thanks,
> Robert Mullenax
Hi Robert,
Products less than 16K are sent directly using the 'hereis' message from
the LDM protocol. Products greater than 16K are sent in 16K pieces
using the 'comings' (for 'coming soon') and 'blkdata' messages. 'coming
soon' gives the downstream site the option of rejecting the product if
it already has it.
If you turn on the verbosity of an rpc.ldmd you'll see it report the
block sizes that it's using. You can cycle the verbosity of the
appropriate rpc.ldmd by sending it a USR2 signal, i.e., 'kill -USR2
<rpc.ldmd_PID>' Sending the signal will cause the program to cycle
through three states: quiet, verbose, and debug - FYI, in case you
inadvertently fill up your disk with log messages.
Anne
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Anne Wilson UCAR Unidata Program
anne@xxxxxxxxxxxxxxxx P.O. Box 3000
Boulder, CO 80307
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