Re: Tracking of page changes for backup purposes. PTRACK [POC]

On Mon, Dec 18, 2017 at 8:34 AM, Aleksander Alekseev
<a.alekseev@postgrespro.ru> wrote:
> 10.1, without ptrack
>
> transaction type: <builtin: TPC-B (sort of)>
> scaling factor: 1
> query mode: simple
> number of clients: 4
> number of threads: 4
> duration: 300 s
> number of transactions actually processed: 28622
> latency average = 41.928 ms
> latency stddev = 18.238 ms
> tps = 95.396155 (including connections establishing)
> tps = 95.397406 (excluding connections establishing)
>
>
> At first glance PTRACK doesn't seem to affect the overall performance
> significantly.

I think this doesn't really show much because it's apparently limited
by the speed of fsync() on your filesystem.  You might try running the
test with synchronous_commit=off.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
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