From: | Vitalii Tymchyshyn <vit(at)tym(dot)im> |
---|---|
To: | Dave Cramer <pg(at)fastcrypt(dot)com> |
Cc: | amithbm <amithbm(at)gmail(dot)com>, PG-JDBC Mailing List <pgsql-jdbc(at)postgresql(dot)org> |
Subject: | Re: Hibernate over postgresql |
Date: | 2014-06-11 12:52:07 |
Message-ID: | CABWW-d3kJkUo4TPUGQ6Gb+a7D_FjL0RfkGQt_Zg1GTKT86hpJw@mail.gmail.com |
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Thread: | |
Lists: | pgsql-jdbc |
Well, it sounds to me like TCP_NODELAY flag problem.
11 черв. 2014 06:15, користувач "Dave Cramer" <pg(at)fastcrypt(dot)com> написав:
> Well the server doesn't control when ACK's are sent. I'd say this is some
> artifact of the network/ OS
>
> Dave Cramer
>
> dave.cramer(at)credativ(dot)ca
> http://www.credativ.ca
>
>
> On 11 June 2014 03:20, amithbm <amithbm(at)gmail(dot)com> wrote:
>
>> amithbm wrote
>> > I installed 9.2.7 keeping the client the same. The performance was even
>> > better than before (100%-150% better) and the ACKs were still being
>> > treated as asynchronous (Deduced by looking at tcpdump)
>> > But the problem remains with the other 9.2.7 server (With the same
>> client)
>> > where ACKs are treated as synchronous and hence my round trip time is
>> > more.
>>
>> It may be important to mention here that the machine with the issue has a
>> virtual IP configured. So clients connect to it using this virtual IP. The
>> other machine which works fine doesn't have virtual IP configured.
>>
>>
>>
>> --
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>>
>>
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>
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