Depending on the size of the table and how much RAM you have, and on your OS,
you may find the entire table cached in RAM, which would be ideal. You should
use persistent connections if at all possible. You didn't mention what web
server you're using, but if you're using Apache, you may want to write an Apache
module that will maintain a persistent connection for each apache child process;
that will also keep your program loaded in memory so it doesn't have to be
reloaded on each request. I would also be concerned about write speed to the log
file; not sure where that will peak.
Hope this helps,
Wes Sheldahl
Alejandro Fernandez <ale%electronic-group.com@interlock.lexmark.com> on
04/23/2002 10:51:40 AM
To: pgsql-general%postgresql.org@interlock.lexmark.com
cc: (bcc: Wesley Sheldahl/Lex/Lexmark)
Subject: [GENERAL] Connections per second?
Hi,
I'm writing a small but must-be-fast cgi program that for each hit it gets, it
reads an indexed table in a postgres database and writes a log to a file based
on the result. Any idea how many hits a second I can get to before things start
crashing, or queuing up too much, etc? And will postgres be one of the first to
fall? Do any of you think it can handle 2000 hits a second (what I think I could
get at peak times) - and what would it need to do so? Persistent connections?
Are there any examples or old threads on writing a similar program in C with
libpq?
Thanks,
Ale
--
Alejandro Fernandez
Electronic Group Interactive
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