Platform PIPE_DATA_BLOCK_SIZE
Linux >= 63489
+ Linux/SPARC >= 126977
FreeBSD, OpenBSD, MacOS X >= 65537
AIX >= 32769
HP-UX >= 8193
*/
#if defined __osf__
# 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