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Add pg_upgrade --jobs parameter

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Add pg_upgrade --jobs, which allows parallel dump/restore of databases,
which improves performance.
This commit is contained in:
Bruce Momjian
2012-12-26 19:26:30 -05:00
parent 3f88b08003
commit 6f1b9e4efd
7 changed files with 277 additions and 19 deletions
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13
contrib/pg_upgrade/dump.c
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@ -33,18 +33,23 @@ generate_old_dump(void)
/* create per-db dump files */
for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
{
char file_name[MAXPGPATH];
char sql_file_name[MAXPGPATH], log_file_name[MAXPGPATH];
DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
pg_log(PG_STATUS, "%s", old_db->db_name);
snprintf(file_name, sizeof(file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
exec_prog(RESTORE_LOG_FILE, NULL, true,
parallel_exec_prog(log_file_name, NULL,
"\"%s/pg_dump\" %s --schema-only --binary-upgrade --format=custom %s --file=\"%s\" \"%s\"",
new_cluster.bindir, cluster_conn_opts(&old_cluster),
log_opts.verbose ? "--verbose" : "", file_name, old_db->db_name);
log_opts.verbose ? "--verbose" : "", sql_file_name, old_db->db_name);
}
/* reap all children */
while (reap_child(true) == true)
;
end_progress_output();
check_ok();
}