Ross J. Reedstrom escribió:
Excellent. I'll take a look at this and report back here.
Ross
On Mon, Feb 23, 2009 at 04:17:00PM -0500, Tom Lane wrote:
Ross J. Reedstrom reeds...@rice.edu writes:
Summary: C client and large-object API python both send bits in
reasonable time, but I suspect
Linos i...@linos.es writes:
Hello, i have been having a problem like this in debian machines and i have
discovered that (almost in my case), the problem only arises when i am using
ssl = true in postgresql.conf although i am using clear tcp connections to
localhost to perform my query, if i
Tom Lane escribió:
Linos i...@linos.es writes:
Hello, i have been having a problem like this in debian machines and i have
discovered that (almost in my case), the problem only arises when i am using
ssl = true in postgresql.conf although i am using clear tcp connections to
localhost to
Linos i...@linos.es writes:
Tom Lane escribió:
Does that number include connection startup overhead? (If it doesn't,
it'd be pretty strange.)
This difference it is from the runtime of the query, i get this with \timing
parameter in psql,
That's just weird --- ssl off should be ssl off no
Tom Lane escribió:
Linos i...@linos.es writes:
Tom Lane escribió:
Does that number include connection startup overhead? (If it doesn't,
it'd be pretty strange.)
This difference it is from the runtime of the query, i get this with \timing
parameter in psql,
That's just weird --- ssl off
Linos i...@linos.es writes:
Tom Lane escribió:
That's just weird --- ssl off should be ssl off no matter which knob you
use to turn it off. Are you sure it's really off in the slow connections?
Maybe i am missing something, i use the same command to connect to it
from localhost psql -d
Tom Lane wrote:
Linos i...@linos.es writes:
Tom Lane escribió:
That's just weird --- ssl off should be ssl off no matter which knob you
use to turn it off. Are you sure it's really off in the slow connections?
Maybe i am missing something, i use the same command to connect to it
from
Magnus Hagander escribió:
Tom Lane wrote:
Linos i...@linos.es writes:
Tom Lane escribió:
That's just weird --- ssl off should be ssl off no matter which knob you
use to turn it off. Are you sure it's really off in the slow connections?
Maybe i am missing something, i use the same command to
Excellent. I'll take a look at this and report back here.
Ross
On Mon, Feb 23, 2009 at 04:17:00PM -0500, Tom Lane wrote:
Ross J. Reedstrom reeds...@rice.edu writes:
Summary: C client and large-object API python both send bits in
reasonable time, but I suspect there's still room for
[note: sending a message that's been sitting in 'drafts' since last week]
Summary: C client and large-object API python both send bits in
reasonable time, but I suspect there's still room for improvement in
libpq over TCP: I'm suspicious of the 6x difference. Detailed analysis
will probably find
On Thu, Feb 19, 2009 at 02:09:04PM +0100, PFC wrote:
python w/ psycopg (or psycopg2), which wraps libpq. Same results w/
either version.
I've seen psycopg2 saturate a 100 Mbps ethernet connection (direct
connection with crossover cable) between postgres server and client during
Ross J. Reedstrom reeds...@rice.edu writes:
Summary: C client and large-object API python both send bits in
reasonable time, but I suspect there's still room for improvement in
libpq over TCP: I'm suspicious of the 6x difference. Detailed analysis
will probably find it's all down to memory
python w/ psycopg (or psycopg2), which wraps libpq. Same results w/
either version.
I've seen psycopg2 saturate a 100 Mbps ethernet connection (direct
connection with crossover cable) between postgres server and client during
a benchmark... I had to change the benchmark to not retrieve a
Ross J. Reedstrom reeds...@rice.edu writes:
On Tue, Feb 17, 2009 at 12:20:02AM -0700, Rusty Conover wrote:
Try running tests with ttcp to eliminate any PostgreSQL overhead and
find out the real bandwidth between the two machines. If its results
are also slow, you know the problem is
On Mon, Feb 16, 2009 at 11:04 PM, Ross J. Reedstrom reeds...@rice.edu wrote:
Recently I've been working on improving the performance of a system that
delivers files stored in postgresql as bytea data. I was surprised at
just how much a penalty I find moving from a domain socket connection to
a
On Tue, Feb 17, 2009 at 12:20:02AM -0700, Rusty Conover wrote:
Try running tests with ttcp to eliminate any PostgreSQL overhead and
find out the real bandwidth between the two machines. If its results
are also slow, you know the problem is TCP related and not PostgreSQL
related.
I
On Feb 17, 2009, at 1:04 PM, Ross J. Reedstrom wrote:
On Tue, Feb 17, 2009 at 12:20:02AM -0700, Rusty Conover wrote:
Try running tests with ttcp to eliminate any PostgreSQL overhead and
find out the real bandwidth between the two machines. If its results
are also slow, you know the problem
On Tue, Feb 17, 2009 at 01:59:55PM -0700, Rusty Conover wrote:
On Feb 17, 2009, at 1:04 PM, Ross J. Reedstrom wrote:
What is the client software you're using? libpq?
python w/ psycopg (or psycopg2), which wraps libpq. Same results w/
either version.
I think I'll try network sniffing
On Tue, Feb 17, 2009 at 03:14:55PM -0600, Ross J. Reedstrom wrote:
On Tue, Feb 17, 2009 at 01:59:55PM -0700, Rusty Conover wrote:
What is the client software you're using? libpq?
python w/ psycopg (or psycopg2), which wraps libpq. Same results w/
either version.
It's not python
On Tue, Feb 17, 2009 at 2:30 PM, Ross J. Reedstrom reeds...@rice.edu wrote:
On Tue, Feb 17, 2009 at 03:14:55PM -0600, Ross J. Reedstrom wrote:
On Tue, Feb 17, 2009 at 01:59:55PM -0700, Rusty Conover wrote:
What is the client software you're using? libpq?
python w/ psycopg (or psycopg2),
Recently I've been working on improving the performance of a system that
delivers files stored in postgresql as bytea data. I was surprised at
just how much a penalty I find moving from a domain socket connection to
a TCP connection, even localhost. For one particular 40MB file (nothing
outragous)
On Feb 17, 2009, at 12:04 AM, Ross J. Reedstrom wrote:
Recently I've been working on improving the performance of a system
that
delivers files stored in postgresql as bytea data. I was surprised at
just how much a penalty I find moving from a domain socket
connection to
a TCP connection,
On Tue, 17 Feb 2009, Rusty Conover wrote:
On Feb 17, 2009, at 12:04 AM, Ross J. Reedstrom wrote:
Recently I've been working on improving the performance of a system that
delivers files stored in postgresql as bytea data. I was surprised at
just how much a penalty I find moving from a domain
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