On 2/18/2011 7:24 AM, Frederik Ramm wrote:
Provided that applying a minutely diff (possily even while the
extraction requests are running) does indeed take less than a minute.
Which, I repeat myself, I believe to be unlikely.
Frederik, André,
I have been playing with this lately on a machine that has 4 cores and
8GB of RAM. The DB is stored on a RAID0 array on 3x200Gb physical disks
(I do not remember the I/O performance of the RAID array and do not have
access to the machine ATM). It took me 7 days (give or take a couple
hours) to import the planet. I then began to apply the daily diffs and
it took me 17 hours for each of the first ones. I stopped at that point
as assuming the import time is constant it would take a month to have an
up-to-date DB.
I did not give a try to the minutely diffs yet.
My 2c,
N.
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