Hi Vladimir,
On 3/14/16 2:15 PM, Vladimir Borodin wrote:
JFYI, I’m preparing the stand to reproduce the initial problem and I
hope to finish testing this week.
Do you know when you'll have the results from the testing you were going to do? It seems this patch is currently waiting on that to be finished.
I couldn’t reproduce the problem on pgbench database with scale factor 50000 last week. The test case was quite simple:
1. On master I was adding data to pgbench_accounts table.
2. On standby I was doing the following:
postgres@pgload01d ~ $ cat /tmp/query
\set naccounts 100000 * :scale
SELECT aid FROM pgbench_accounts WHERE aid = :naccounts;
postgres@pgload01d ~ $ /usr/pgsql-9.6/bin/pgbench -M prepared -f /tmp/query -c 1 -j 1 -T 3600 -P 10 -S -n pgbench
3. On master I was sometimes calling VACUUM pgbench_accounts.
Without applying patches there weren’t huge replication lags on standbys. Seems, that I'm doing something wrong… I’m doing my best right now to find the reason but I can’t give you any time evaluation :(
Thanks,
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