I have 2 node AO setup (SQL Server 2012 SP4), having 1 AG which has around 100 databases.
Both are the physical server having configuration OS win server 2012, 64GB RAM, 24 logical Cores.
While doing the load performance testing, I have noticing lot of lag when AG is running in sync mode, HADR_SYNC_COMMIT waitype is highest.
I setup the dedicated AO communitcation link of 1GB speed between both the servers, but still lag is same.
When it is in Asynchronous mode testing insert script gets complete within 40 seconds, where as when it is running in synchorounos mode it takes 5 minutes.
CPU usage remain between 3% to 4% and RAM between 5-6% on both the servers.
Its a test environment, so there are hardly any connection made to it and also no other operation is happening. Servers remain idle most of the time.
Any troubleshooting tips to find the bottleneck or any idea what could be the possible solution to improve it?
--
Udham Singh
Both are the physical server having configuration OS win server 2012, 64GB RAM, 24 logical Cores.
While doing the load performance testing, I have noticing lot of lag when AG is running in sync mode, HADR_SYNC_COMMIT waitype is highest.
I setup the dedicated AO communitcation link of 1GB speed between both the servers, but still lag is same.
When it is in Asynchronous mode testing insert script gets complete within 40 seconds, where as when it is running in synchorounos mode it takes 5 minutes.
CPU usage remain between 3% to 4% and RAM between 5-6% on both the servers.
Its a test environment, so there are hardly any connection made to it and also no other operation is happening. Servers remain idle most of the time.
Any troubleshooting tips to find the bottleneck or any idea what could be the possible solution to improve it?
--
Udham Singh