Hi, User issues should generally go to samba at lists.samba.org which I've cc'd. How large is your database/how many users do you have? Is it still slow if you reverse the search expression (&(sAMAccountName=XXXX)(objectClass=person))? There have been a large number of performance improvements made since 4.3, so upgrading to the latest versions might be a good idea before any additional investigation. Cheers, Garming On 05/03/18 20:27, Kitsda Yonpladyod via samba-technical wrote:> Dear Friends, > > > I have problem with samba 4.3 AD DC, response times > > below are my ldapsearch time responses > > > Kritsada-MacBook-Pro:~ kitsda$ ldapExecTime=`/usr/bin/time -lp ldapsearch -h true.care -p 389 -b "DC=true,DC=care" -D "CN=U-SVC-CMDB,OU=Users,OU=Standard,OU=Controls,OU=02-Resources,DC=true,DC=care" -w Password -l 300 -z 1000 "(&(objectClass=person)(sAMAccountName=Sutanya))" cn sAMAccountName` > > real 10.82 > > user 0.01 > > sys 0.00 > > 5406720 maximum resident set size > > 0 average shared memory size > > 0 average unshared data size > > 0 average unshared stack size > > 1390 page reclaims > > 0 page faults > > 0 swaps > > 0 block input operations > > 0 block output operations > > 15 messages sent > > 30 messages received > > 0 signals received > > 6 voluntary context switches > > 29 involuntary context switches > >