Thank you, Marti,
Is there any comprehensive survey of (at least most, if not all)
modern features of operating systems, for example I/O scheduling,
extent-based filesytems, etc.?
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
Hello,
It is interesting how PostgreSQL reads the tablefiie.
Whether its indexes store/use filesystem clusters locations containing
required data (so it can issue a low level cluster read) or it just
fseeks inside a file?
Thank you
--
Sent via pgsql-performance mailing list (pgsql-performance@p
Thank you, Craig, your answers are always insightful
> What is read_cluster() ? Are you talking about some kind of async and/or
I meant that if you want to read a chunk of data from file you (1)
might not call traditional fseek but rather memorize hard drive
cluster numbers to boost disk seeks a
Hello,
It is interesting how PostgreSQL reads the tablefiie.
Whether its indexes store/use filesystem clusters locations containing
required data (so it can issue a low level cluster read) or it just
fseeks inside a file?
Thank you
--
Sent via pgsql-performance mailing list (pgsql-performance@p
Thank you a lot, Craig, that's really insightful and exhaustively
complete explanation I've expected!
2011/9/10 Craig Ringer :
> On 10/09/2011 1:55 AM, Antonio Rodriges wrote:
>>
>> Hello,
>>
>> Does anyone know whether PostgreSQL uses DMA (Direct Memory A
http://www.ibm.com/developerworks/library/j-zerocopy/
2011/9/9 Scott Marlowe :
> On Fri, Sep 9, 2011 at 11:55 AM, Antonio Rodriges
> wrote:
>> Hello,
>>
>> Does anyone know whether PostgreSQL uses DMA (Direct Memory Access) in
>> certain cases to improve networking I
to devise the best logic for the system with PostgreSQL as
a layer. Certainly I could study PostgreSQL sources or test it with a
simple application but I hope PostgreSQL experts are aware of this
feature.
Thank you.
--
Kind regards,
Antonio Rodriges
--
Sent via pgsql-performance mailin
