On Wed, 10 Feb 2016 10:40:45 +0100, Stefan Esser <s...@freebsd.org> wrote:
Author: se
Date: Wed Feb 10 09:40:45 2016
New Revision: 295465
URL: https://svnweb.freebsd.org/changeset/base/295465
Log:
Remove O_SYNC from the options passed to dbmopen().
The services db is created as a temporary file that is moved over the
existing file after completion. Thus there is no need to immediately
flush all created db records to the temporary file.
This speeds up creation of the services db by a factor of 500 on my
ZFS based /var/db filesytem (from 110 seconds to 0.235 seconds).
MFC after: 1 week
Nice! My ARM installation on an USB stick was so slow I stopped waiting
for this and started to do tricks of running a tmp dir on the building
host.
Regards,
Ronald.
Modified:
head/usr.sbin/services_mkdb/services_mkdb.c
Modified: head/usr.sbin/services_mkdb/services_mkdb.c
==============================================================================
--- head/usr.sbin/services_mkdb/services_mkdb.c Wed Feb 10 09:19:29
2016 (r295464)
+++ head/usr.sbin/services_mkdb/services_mkdb.c Wed Feb 10 09:40:45
2016 (r295465)
@@ -141,7 +141,7 @@ main(int argc, char *argv[])
err(1, "Cannot install exit handler");
(void)snprintf(tname, sizeof(tname), "%s.tmp", dbname);
- db = dbopen(tname, O_RDWR | O_CREAT | O_EXCL | O_SYNC,
+ db = dbopen(tname, O_RDWR | O_CREAT | O_EXCL,
(S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH), DB_HASH, &hinfo);
if (!db)
err(1, "Error opening temporary database `%s'", tname);
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