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.?
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On 24/09/2011 2:49 PM, Antonio Rodriges wrote:
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?
What is read_cluster()
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
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
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On Mon, Sep 26, 2011 at 15:51, Antonio Rodriges antonio@gmail.com wrote:
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
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
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