Have a look through the log files for both postgresql and the kernel.
You could be having issues like SCSI time outs, or a failed disk in a
RAID, or there could be some hints in the postgresql logs about what's
happening.
What does top show? high CPU load, low?
iostat ?
vmstat ?
On Wed, 28 May 2003, Chad Thompson wrote:
> I have, what appears to be a big problem.
>
> Machine specs
> AMD 2100+,
> 1 GIG SDRam,
> 3 WD HD's
> 1 - 20 Gig -15 Gig system and 5 Gig Swap
> mounted as /
> 2 - 80 Gig (8 M Cache) in Redhat software RAID 1 (mirror) using Adaptec
> 1200 as an IDE Controller
> mounted as /usr/local/pgsql
> Redhat 8 w/ latest kernel and all updates.
>
> I have a much slower machine that has been running my database. We are
> trying to upgrade to the above machine to make things a bit faster.
>
> I followed "Tips for upgrading PostgreSQL from 6.5.3 to 7.0.3" by Mark
> Stosberg with only a few changes
>
> [postgres@sqlsrv root]# pg_dump -cs mydbtable >sqlschema.sql
> [postgres@sqlsrv root]# pg_dump -a mydbtable > sqldump.sql
>
> sqlschema.sql = 900K
> sqldump.sql = 2.4G
>
> [sftp files to aforementioned machine]
>
> [postgres@newsqlsrv root]# psql -e mydbtable <sqlschema.sql 2>&1 | tee
> schema-full-results.txt; grep ERROR schema-full-results.txt
> >schema-err-results.txt
>
> All this works perfectly, quite fast but when I ran....
>
> [postgres@newsqlsrv root]# psql -e <sqldump.sql 2>&1 | tee
> inserts-full-results.txt; grep ERROR inserts-full-results.txt
> >inserts-err-results.txt
>
> It started off quick, but it got to the first table w/ any real data in it
> (only about 30k records) and acted like it was frozen. I left it running
> all night, it finished that table and started on others but it hasnt even
> gotten to the big tables (2 @ about 9 million records). At this pace it
> will take several days to finish the restore.
>
> I hope this is something easy/stupid that I have missed. I know that w/
> mirroring my write times are not improved, but they are DEFINATLY not this
> bad.
>
> I hope that I havent missed any information.
> Thank you in advance for any direction.
>
> Chad
>
>
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