diff options
Diffstat (limited to 'src/include/pg_config.h.in')
| -rw-r--r-- | src/include/pg_config.h.in | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/include/pg_config.h.in b/src/include/pg_config.h.in index 608e75cd7b6..2314d819659 100644 --- a/src/include/pg_config.h.in +++ b/src/include/pg_config.h.in @@ -747,6 +747,18 @@ first (like Motorola and SPARC, unlike Intel and VAX). */ #undef WORDS_BIGENDIAN +/* Size of a WAL file block. This need have no particular relation to BLCKSZ. + XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O, + XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O + buffers, else direct I/O may fail. Changing XLOG_BLCKSZ requires an initdb. + */ +#undef XLOG_BLCKSZ + +/* XLOG_SEG_SIZE is the size of a single WAL file. This must be a power of 2 + and larger than XLOG_BLCKSZ (preferably, a great deal larger than + XLOG_BLCKSZ). Changing XLOG_SEG_SIZE requires an initdb. */ +#undef XLOG_SEG_SIZE + /* Number of bits in a file offset, on hosts where this is settable. */ #undef _FILE_OFFSET_BITS |