diff options
Diffstat (limited to 'src/include/pg_config_manual.h')
| -rw-r--r-- | src/include/pg_config_manual.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h index 0a1e8233d3e..c0d546761a8 100644 --- a/src/include/pg_config_manual.h +++ b/src/include/pg_config_manual.h @@ -6,7 +6,7 @@ * for developers. If you edit any of these, be sure to do a *full* * rebuild (and an initdb if noted). * - * $PostgreSQL: pgsql/src/include/pg_config_manual.h,v 1.28 2008/02/29 20:58:33 alvherre Exp $ + * $PostgreSQL: pgsql/src/include/pg_config_manual.h,v 1.29 2008/03/10 20:06:27 tgl Exp $ *------------------------------------------------------------------------ */ @@ -27,8 +27,9 @@ /* * RELSEG_SIZE is the maximum number of blocks allowed in one disk - * file. Thus, the maximum size of a single file is RELSEG_SIZE * - * BLCKSZ; relations bigger than that are divided into multiple files. + * file when USE_SEGMENTED_FILES is defined. Thus, the maximum size + * of a single file is RELSEG_SIZE * BLCKSZ; relations bigger than that + * are divided into multiple files. * * RELSEG_SIZE * BLCKSZ must be less than your OS' limit on file size. * This is often 2 GB or 4GB in a 32-bit operating system, unless you @@ -39,9 +40,16 @@ * in the direction of a small limit. (Besides, a power-of-2 value * saves a few cycles in md.c.) * + * When not using segmented files, RELSEG_SIZE is set to zero so that + * this behavior can be distinguished in pg_control. + * * Changing RELSEG_SIZE requires an initdb. */ +#ifdef USE_SEGMENTED_FILES #define RELSEG_SIZE (0x40000000 / BLCKSZ) +#else +#define RELSEG_SIZE 0 +#endif /* * Size of a WAL file block. This need have no particular relation to BLCKSZ. |