replication performance impact

  • Any good way to measure the SQL performance when setting up the replication? Is replication taking a lot of resources? How could we tell the impact if I have single replication setup compare with multiple replication setup in the same server? Anyone can share with me?

    Thanks in advances.

  • MS has a good whitepaper on perf and tuning on MSDN. Overall I'd say the impact is fairly minor, but it's there. Logreader and distribution agents use some memory, only an issue if you have a lot running and don't have a lot of memory. You'll see more disk activity because of distribution db.

    Andy

    http://qa.sqlservercentral.com/columnists/awarren/

  • Hi,

    I has the same concerns. We have a backend database and an app server. Both are single Xeon machines with 2Gb memory.

    We used push transactional replication from data server to app server so that, if needed, app server could run the entire application.

    Our experience was great (once we got everything going) it had no measurable impact at all. Our system supports an average of 20 trans per second and the average latency between the two databases is around 5 seconds.

    Cheers, Peter

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