Cool - seems like the posters caught that auto memory pick problem before
you posted, but you got the 16GB/8k parts right.
Now we're looking at realistic numbers - 790 seeks/second, 244MB/s
sequential write, but only 144MB/s sequential reads, perhaps 60% of what it
should be.
Seems like a pretty
Hi, Jim,
Jim C. Nasby wrote:
Well, if the controller is caching with a BBU, I'm not sure that order
matters anymore, because the controller should be able to re-order at
will. Theoretically. :) But this is why having some actual data posted
somewhere would be great.
Well, actually, the
Hi,
Can you run bonnie++ version 1.03a on the machine and report the results
here?
Do you know if the figures from bonnie++ are able to measure the
performance related to the overhead of the 'fsync' option? I had
very strange performance differences between two Dell 1850
machines months ago,
Hi Dave,
Thanks to reply.
I run it now in a Postgres 8.1.4 my notebook (win XP) and the
performance is really much better:
EXPLAIN ANALYZE
SELECT Contrato.Id
, Min( prog.dtsemeio ) AS DtSemIni
, Max( prog.dtsemeio ) AS DtSemFim
, Min( prog.dtembarque ) AS DtEmbIni
, Max(
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Luiz K. Matsumura
Well, in this case the queries with LEFT OUTER join and with
inner join
returns the same result set. I don´t have the sufficient knowledge to
affirm , but I suspect that if the query plan used for
Luke,
Thanks for the tips. I'm running FreeBSD 6.1 amd64, but, I can also
enable readahead on the raid controller, and also adaptive readahead.
Here's tests:
Readahead writeback enabled:
bash-2.05b$ bonnie++ -d bonnie -s 16000:8k
Version 1.03 --Sequential Output-- --Sequential
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Luiz K. Matsumura
Where I can see the current random_page_cost value ? There
are some hint
about what value I must set ?
Thanks in advance.
Luiz
On Linux the random_page_cost is set in the
The relevant portion of my sysctl.conf file looks like this:
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
I understood it was a good idea to set shmmax to half of available
memory (2GB in this case). I assume that I
I'm in the process of migrating a Paradox 7/BDE 5.01 database from single-user
Paradox to a web based interface to either MySQL or PostgreSQL.
The database is a pedigree sheep breed society database recording sheep and
flocks (amongst other things).
My current problem is with one table and an
On 16-8-2006 18:48, Peter Hardman wrote:
Using identically structured tables and the same primary key, if I run this on
Paradox/BDE it takes about 120ms, on MySQL (5.0.24, local server) about 3ms,
and on PostgresSQL (8.1.3, local server) about 1290ms). All on the same
Windows XP Pro machine
On 8/16/06, Peter Hardman [EMAIL PROTECTED] wrote:
I'm in the process of migrating a Paradox 7/BDE 5.01 database from single-user
Paradox to a web based interface to either MySQL or PostgreSQL.
The database is a pedigree sheep breed society database recording sheep and
flocks (amongst other
I had enable_seqscan turned OFF; With enable_seqscan turned ON it takes only 6
minutes to complete
the query and not 44minuts like it did with enable_seqscan turned OFF. THANKS
A LOT!
It's still much more slower than MS SQL server but now it has acceptable times.
Sebastián Baioni
---
On 16 Aug 2006 at 20:02, Arjen van der Meijden wrote:
On 16-8-2006 18:48, Peter Hardman wrote:
Using identically structured tables and the same primary key, if I run this
on
Paradox/BDE it takes about 120ms, on MySQL (5.0.24, local server) about
3ms,
and on PostgresSQL (8.1.3,
Peter Hardman [EMAIL PROTECTED] writes:
I'm in the process of migrating a Paradox 7/BDE 5.01 database from
single-user
Paradox to a web based interface to either MySQL or PostgreSQL.
The query I run is:
/* Select all sheep who's most recent transfer was into the subject flock */
SELECT
Everyone,
I wanted to follow-up on bonnie results for the internal RAID1 which is
connected to the SmartArray 6i. I believe this is the problem, but I am
not good at interepting the results. Here's an sample of three runs:
scsi disc
array
On Wed, Aug 16, 2006 at 09:34:24AM -0600, Carl Youngblood wrote:
The relevant portion of my sysctl.conf file looks like this:
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
I understood it was a good idea to set
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