On 21/03/2010 9:17 PM, David Newall wrote:
Thanks for all of the suggestions, guys, which gave me some pointers on
new directions to look, and I learned some interesting things.
Unfortunately one of these processes dropped eventually, and, according
to top, the only non-idle process running
Craig Ringer cr...@postnewspapers.com.au writes:
On 21/03/2010 9:17 PM, David Newall wrote:
and wonder if I should read up on gzip to find why it would work so
slowly on a pure text stream, albeit a representation of PDF which
intrinsically is fairly compressed.
In fact, PDF uses deflate
Tom Lane wrote:
I would bet that the reason for the slow throughput is that gzip
is fruitlessly searching for compressible sequences. It won't find many.
Indeed, I didn't expect much reduction in size, but I also didn't expect
a four-order of magnitude increase in run-time (i.e. output
If you are really so desparate to save a couple of GB that you are resorting
to -Z9 then I'd suggest using bzip2 instead.
bzip is designed for things like installer images where there will be
massive amounts of downloads, so it uses a ton of cpu during compression,
but usually less than -Z9 and
If you have a multi-processor machine (more than 2) you could look into pigz,
which is a parallelized implementation of gzip. I gotten dramatic reductions in
wall time using it to zip dump files. The compressed file is readable by
ungzip.
Bob Lunney
From: Dave Crooke dcro...@gmail.com
On Sat, Mar 20, 2010 at 11:47 PM, Andy Colson a...@squeakycode.net wrote:
Don't underestimate mysql. It was written to be fast. But you have to
understand the underling points: It was written to be fast at the cost of
other things... like concurrent access, and data integrity. If you want
Note however that Oracle offeres full transactionality and does in place row
updates. There is more than one way to do it.
Cheers
Dave
On Mar 21, 2010 5:43 PM, Merlin Moncure mmonc...@gmail.com wrote:
On Sat, Mar 20, 2010 at 11:47 PM, Andy Colson a...@squeakycode.net wrote:
Don't underestimate
On 22/03/2010 1:04 AM, Dave Crooke wrote:
If you are really so desparate to save a couple of GB that you are
resorting to -Z9 then I'd suggest using bzip2 instead.
bzip is designed for things like installer images where there will be
massive amounts of downloads, so it uses a ton of cpu during
On Sun, Mar 21, 2010 at 8:46 PM, Craig Ringer
cr...@postnewspapers.com.au wrote:
On 22/03/2010 1:04 AM, Dave Crooke wrote:
If you are really so desparate to save a couple of GB that you are
resorting to -Z9 then I'd suggest using bzip2 instead.
bzip is designed for things like installer
Reydan Cankur wrote:
I have compiled PostgreSQL 8.4 from source code and in order to
install pgbench, I go under contrib folder and run below commands:
make
make install
when I write pgbench as a command system cannot find pgbench as a command.
Do regular PostgreSQL command such as psql
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