Good time of the day!
>> RJ> Slowdown when inserting into a high-tuple table vs. a low-tuple
>> RJ> table?
>>
>> Yes. And the difference is pretty big... Or I misunderstood your
>> question?
RJ> When the table had 1,000 rows in it, inserting was faster than now
RJ> that it has 20M records? Sounds like you understood me...
RJ> I've done the same thing and didn't notice all that much of a drop-
RJ> off in speed. (IDE drive using the EXT3 filesystem.)
I use SCSI drive with UFS. Perhaps the slowdown comes from
multiple simultaneous INSERTs - I've tried to record server visits
into table (something like 70-100 thousand records a day). It works
fine for one-two persons (even with loaded table) and works fine under
load with "empty" table (up to around 500 - 700 thousand records).
After that every insert starts to require like 3-5 seconds, which
causes locks for other processes (I have about 100-150 connections) -
every INSERT is a transaction and other processes can't add record
till this transaction finish. Slowdown is steady, but at some point
server just hangs - I belive it happens when time needed for
transaction to finish is increased to the point when new visitors
can't connect to the database (due to no available connections) and
receive "too many clients already".
Best regards,
Dmitri ( mailto:dmitri@listsoft.ru )
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