Platform PIPE_DATA_BLOCK_SIZE
Linux >= 63489
+ Linux/SPARC >= 126977
+ Linux/IA-64, Linux/MIPS >= 253953
FreeBSD, OpenBSD, MacOS X >= 65537
AIX >= 32769
HP-UX >= 8193
Cygwin >= 65537
native Win32 >= 4097 (depends on the _pipe argument)
*/
-#if defined __osf__
+#if defined __osf__ || (defined __linux__ && (defined __ia64__ || defined __mips__))
# define PIPE_DATA_BLOCK_SIZE 270000
+#elif defined __linux__ && defined __sparc__
+# define PIPE_DATA_BLOCK_SIZE 140000
#else
# define PIPE_DATA_BLOCK_SIZE 70000
#endif