Pipe Buffer Size

10 More Discussions You Might Find Interesting

1. Programming

[c] How to calculate size of the file from size of the buffer?

Hi, Can I find size of the file from size of the buffer written? nbECRITS = fwrite(strstr(data->buffer, ";") + 1, sizeof(char), (data->buffsize) - LEN_NOM_FIC, fic_sortie); Thank You :)

2. UNIX for Dummies Questions & Answers

Decrease buffer size

Hi, I am using the below command to get the output in a file called "Logs.txt" tail -f filename | egrep -i "cpu | hung " >> Logs.txt The problem is the Logs.txt file gets updated only after the buffer is 8Kb, but i want to update the file immediately and not wait for the buffer to get 8kb. Is...

3. Shell Programming and Scripting

sftp Invalid buffer size

For the above one I am getting an error like Invalid buffer size ...Could some one help

4. UNIX for Dummies Questions & Answers

Determine switch buffer size

Hi everybody, I need to calculate the tcp buffer size of a network switch, since it's not specified in the manual; how do I do this? I have some machines connected to the switch and I can run some socket tests written in C between these machines (I can choose how many bytes to send and...

5. Programming

Send/Receive buffer size??

Dear friends, How do I find the TCP send and receive buffer size?

6. UNIX for Advanced & Expert Users

named pipe with persistent buffer

Hey folks, i need communicate between 2 processes in a reliable manner. The information delivery has to be guarenteed. I thought about proc 2 sending a signal to proc 1 when information has being written to disc and wirte() has been verified (sync/flush). The IPC method for the data is named...

7. UNIX for Advanced & Expert Users

How to increase the buffer size in Unix

When I checked with top command, I found tht my buffers are always 137M, which means that they are sort of overloaded. My Inactive memory is 520M. Is it possible to increaase the buffer size and what would be the command for that?

8. Red Hat

buffer cache size

hi everyone, can any one help change the buffer cache size in redhat and suse?? this error i got when i installed oracle 10g and it went well and when i try to mount the database using startup cmd it says too many buffer cache parameters (error code : ora-1034) thnq in advance

9. UNIX for Advanced & Expert Users

PIPE and FIFO buffer size

Hello! How I can increase (or decrease) the predefined pipe buffer size? Thanks!

10. Programming

Using fread if the buffer size is not known

Hi... I am trying to read a binary data that have different types of messages of different lengths. I am using fread() but this functions needs the size and count to read the buffer from the file. I think this may cause that the buffer overlaps other messages. Is there an alternative to read...

LEARN ABOUT DEBIAN

io_pipe

io_pipe(3)						     Library Functions Manual							io_pipe(3)

NAME

       io_pipe - create a Unix pipe

SYNTAX

       #include <io.h>

       int io_pipe(int64 pfd[2]);

DESCRIPTION

       io_pipe	creates  a  new UNIX ``pipe.'' The pipe can receive data and provide data; any bytes written to the pipe can then be read from the
       pipe in the same order.

       A pipe is typically stored in an 8192-byte memory buffer; the exact number depends on the UNIX kernel. Bytes are written to the end of  the
       buffer  and  read  from	the beginning of the buffer. Once a byte has been read, it is eliminated from the buffer, making space for another
       byte to be written; readers cannot ``rewind'' a pipe to read old data. Once 8192 bytes have been written to the buffer, the pipe  will  not
       be  ready for further writing until some of the bytes have been read. Once all the bytes written have been read, the pipe will not be ready
       for further reading until more bytes are written.

       io_pipe sets d[0] to the number of a new descriptor reading from the pipe, and sets d[1] to the number of a new descriptor writing  to  the
       pipe.  It then returns 1 to indicate success. If something goes wrong, io_pipe returns 0, setting errno to indicate the error; in this case
       it frees any memory that it allocated for the new pipe, and it leaves d alone.

SEE ALSO

       io_readfile(3), io_createfile(3), io_socketpair(3)

																	io_pipe(3)

AIX