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size limitage for PIPE file

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# 1  
Old 04-17-2007
Bug size limitage for PIPE file
Hi,

We have a HP Box and it has a PIPE fiile, "FPCREQ", which has the maximum number of bytes that is allowable to write into a "PIPE" is 8192 bytes. For the past few days we are facing quite a lot of problems in that box and it was cached for a very long period. When the cache is turned OFF, both the current and cached transaction pumped into the "FPCREQ", obviously at that point of time the write operation into the pipe will be greater than the read. This causes the "FPCREQ" pipe to hang and it needs a manual clearance. When PIPE is hung/full the write operation fails.

Is there a possibility to increase the PIPE_BUF size..??

Please find below the header file (limits.h) entry:

#define PIPE_BUF 8192 /*max number bytes that is guaranteed to be atomic when writing to a pipe */[/FONT]

Gurus,
Please help me find out the right way to solve the above issue:

1.Shall i increase the PIPE_BUF? is it possible or not?
2.add more read processes so that they can load balances and so the write/read count 'ld works smooth..
3.Seperate load balanced mechanism for processing the FPCREQ pipe and then redirect it to the another PIPE.. simply multiple pipes

Please help me!!

Thanks in Advance!

***Moderators note: email removed
Last edited by reborg; 04-17-2007 at 04:08 PM..
# 2  
Old 04-17-2007
Posting your email is against the rules, please read them.
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