Specifies the maximum number of bytes that a single system call can pass to a STREAM to be placed in the data part of a message. Any write exceeding this size is broken into multiple messages. For more information, see write(2).
Signed integer
65,536
0 to 262,144
Bytes
Yes
None
When putmsg calls return ERANGE. For more information, see putmsg(2).
Unstable