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In pg_upgrade, use cached copy of directory listing, rather than calling

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scandir() with a pattern for every table.

Optimization after report of pg_upgrade slowness with 150k tables.
This commit is contained in:
Bruce Momjian
2010-10-20 00:33:19 +00:00
parent 07456b45e6
commit ad06db2610
3 changed files with 74 additions and 54 deletions
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25
contrib/pg_upgrade/pg_upgrade.h
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@ -85,10 +85,10 @@ typedef struct
*/
typedef struct
{
char old_dir[MAXPGPATH];
char new_dir[MAXPGPATH];
Oid old_relfilenode; /* Relfilenode of the old relation */
Oid new_relfilenode; /* Relfilenode of the new relation */
char old_file[MAXPGPATH];
char new_file[MAXPGPATH];
char old_nspname[NAMEDATALEN]; /* old name of the namespace */
char old_relname[NAMEDATALEN]; /* old name of the relation */
char new_nspname[NAMEDATALEN]; /* new name of the namespace */
@ -255,10 +255,8 @@ void check_old_cluster(bool live_check,
char **sequence_script_file_name);
void check_new_cluster(void);
void report_clusters_compatible(void);
void issue_warnings(
char *sequence_script_file_name);
void output_completion_banner(
char *deletion_script_file_name);
void issue_warnings(char *sequence_script_file_name);
void output_completion_banner(char *deletion_script_file_name);
void check_cluster_versions(void);
void check_cluster_compatibility(bool live_check);
void create_script_for_old_cluster_deletion(char **deletion_script_file_name);
@ -319,14 +317,12 @@ typedef void *pageCnvCtx;
#endif
int dir_matching_filenames(const struct dirent * scan_ent);
int pg_scandir(const char *dirname,
struct dirent *** namelist,
int (*selector) (const struct dirent *));
const char *copyAndUpdateFile(
pageCnvCtx *pageConverter, const char *src,
int pg_scandir(const char *dirname, struct dirent *** namelist,
int (*selector) (const struct dirent *));
const char *copyAndUpdateFile(pageCnvCtx *pageConverter, const char *src,
const char *dst, bool force);
const char *linkAndUpdateFile(
pageCnvCtx *pageConverter, const char *src, const char *dst);
const char *linkAndUpdateFile(pageCnvCtx *pageConverter, const char *src,
const char *dst);
void check_hard_link(void);
@ -374,8 +370,7 @@ PGresult *executeQueryOrDie(PGconn *conn,
void start_postmaster(Cluster whichCluster, bool quiet);
void stop_postmaster(bool fast, bool quiet);
uint32 get_major_server_version(char **verstr,
Cluster whichCluster);
uint32 get_major_server_version(char **verstr, Cluster whichCluster);
void check_for_libpq_envvars(void);