[Samba] samba 4.7.3 DLZ performance regression
- Date: Wed, 13 Dec 2017 14:40:04 -0600
- From: Arthur Ramsey via samba <samba@xxxxxxxxxxxxxxx>
- Subject: [Samba] samba 4.7.3 DLZ performance regression
I'm seeing a huge performance regression with Samba 4.7.3 DLZ and BIND
9.8.2rc1-RedHat-9.8.2-0.62.rc1.el6_9.4. If I remove DLZ external DNS
requests are a few ms. If it is enabled then internal and external DNS
requests are a 1-3 seconds or timeout. Downgrading BIND had no effect.
I reverted just the DLZ modules back to 4.7.0 and performance is back to
# cp /usr/src/samba-4.7.0/bin/modules/bind9/dlz_bind9* /usr/local/samba/lib/bind9
# echo 'export LDB_MODULES_PATH=/usr/src/samba-4.7.0/bin/modules/ldb' >> /etc/sysconfig/named
# service named restart
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