On 02/28/11 19:30, Andres Freund wrote:
Hi,
On Wednesday 23 February 2011 19:31:58 Gary Fu wrote:
I'm testing on converting a big Sybase db to Pg. It took about 45 hours
to convert all sybase tables (bcp) to Pg (copy) without index and
reference. After that I built the index (one by one, sequentially) and
it took about 25 hours and then I started to add the references (one by
one), however, it has been more than 30 hours and still has no sign of
finishing. I wonder, is there any suggestion that may speed up the index
and reference building (on Pg).
I think some additional information would be useful:
* pg version
* kernel version
* distribution
Andres
Here are the information :
modaps_lads=> show server_version;
server_version
----------------
9.0.1
9:58am 32 gfu@moddblads:/dump/gfu> uname -a
Linux moddblads 2.6.18-194.17.1.el5 #1 SMP Wed Sep 29 12:50:31 EDT 2010
x86_64 x86_64 x86_64 GNU/Linux
9:58am 34 gfu@moddblads:/dump/gfu> cat /proc/version
Linux version 2.6.18-194.17.1.el5 (mockbu...@builder10.centos.org) (gcc
version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Wed Sep 29 12:50:31
EDT 2010
Also, we have RAID10 with 600GB SAS drives 15000RPM
Another question here is that why building the reference will lock the
table for reading ? I mean why I cannot build two references at the
same time on the same reference table. Does the reference build just read ?
Thanks,
Gary
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