#At lp:maria based on
revid:[email protected]
2743 Igor Babaev 2009-09-16
Fix of bug #417751 by Yasufumi Kinoshita.
modified:
storage/xtradb/srv/srv0start.c
=== modified file 'storage/xtradb/srv/srv0start.c'
--- a/storage/xtradb/srv/srv0start.c 2009-09-03 13:20:22 +0000
+++ b/storage/xtradb/srv/srv0start.c 2009-09-16 17:43:01 +0000
@@ -1119,8 +1119,14 @@ innobase_start_or_create_for_mysql(void)
os_aio_use_native_aio = FALSE;
} else {
- /* On Win 2000 and XP use async i/o */
- os_aio_use_native_aio = TRUE;
+ /* On Win 2000 and XP currently native async i/o
+ is not used for xtradb by default */
+ //os_aio_use_native_aio = TRUE;
+ os_aio_use_native_aio = FALSE;
+ fprintf(stderr,
+ "InnoDB: Windows native async i/o is disabled as
default.\n"
+ "InnoDB: It is not applicable for the current"
+ " multi io threads implementation.\n");
}
#endif
if (srv_file_flush_method_str == NULL) {
@@ -1156,6 +1162,12 @@ innobase_start_or_create_for_mysql(void)
} else if (0 == ut_strcmp(srv_file_flush_method_str,
"async_unbuffered")) {
srv_win_file_flush_method = SRV_WIN_IO_UNBUFFERED;
+ os_aio_use_native_aio = TRUE;
+ srv_n_read_io_threads = srv_n_write_io_threads = 1;
+ fprintf(stderr,
+ "InnoDB: 'async_unbuffered' was detected as
innodb_flush_method.\n"
+ "InnoDB: Windows native async i/o is enabled.\n"
+ "InnoDB: And io threads are restricted.\n");
#endif
} else {
fprintf(stderr,
_______________________________________________
Mailing list: https://launchpad.net/~maria-developers
Post to : [email protected]
Unsubscribe : https://launchpad.net/~maria-developers
More help : https://help.launchpad.net/ListHelp
