Re: Replication - Mailing list pgsql-hackers

From Gregory Maxwell
Subject Re: Replication
Date
Msg-id e692861c0608211146k5e6bb8f0t84fc38a259291e82@mail.gmail.com
Whole thread Raw
In response to Re: Replication  (Alvaro Herrera <alvherre@commandprompt.com>)
Responses Re: Replication
Re: Replication
List pgsql-hackers
On 8/21/06, Alvaro Herrera <alvherre@commandprompt.com> wrote:
> But the confirmation that needs to come is that the WAL changes have
> been applied (fsync'ed), so the performance will be terrible.  So bad,
> that I don't think anyone will want to use such a replication system ...

Okay. I give up... Why is waiting for fsync on a fast local network
which takes 15us to send a message (infiniband is cheap..) an
unimaginable delay when we tolerate a local 8ms fsync delay on systems
without writeback cache?


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