On Jun 30, 2008, at 2:37 PM, Andrea Connell wrote:
Any ideas? It's driving me crazy why SQLite is this much slower on
UNIX
boxes, while other applications maintain their speed.
What filesystem are you using on the unix boxes? Are you *sure* you
are not using NFS?
D. Richard Hipp
[EMAIL
Are there any other processes or threads trying to open your db file while
you run your tests?
On Mon, Jun 23, 2008 at 9:48 AM, Andrea Connell [EMAIL PROTECTED]
wrote:
The program took 47 seconds to run, but the results only account for
.39 seconds
Most likely all the time is being
]
[mailto:[EMAIL PROTECTED] On Behalf Of Andrea Connell
Sent: Monday, June 23, 2008 11:48 AM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Performance on HP
The program took 47 seconds to run, but the results only account for
.39 seconds
Most likely all the time is being spent
On Jun 30, 2008, at 2:37 PM, Andrea Connell wrote:
Any ideas? It's driving me crazy why SQLite is this much slower on
UNIX
boxes, while other applications maintain their speed.
What filesystem are you using on the unix boxes? Are you *sure* you
are not using NFS?
D. Richard Hipp
[EMAIL
Have you tried compiling with the profiler and seeing where the time is
being spent?
I compiled with the profiler and used prof to analyze the mon.out file.
The program took 47 seconds to run, but the results only account for .39
seconds
I do compile sqlite3.c into sqlite3.o then link it into
On Jun 23, 2008, at 10:38 PM, Andrea Connell wrote:
Have you tried compiling with the profiler and seeing where the
time is
being spent?
I compiled with the profiler and used prof to analyze the mon.out
file.
The program took 47 seconds to run, but the results only account
for .39
The program took 47 seconds to run, but the results only account for
.39 seconds
Most likely all the time is being spent in IO related system calls
- read(), write() and fsync().
Dan.
Thanks for the idea Dan. How can I confirm this or try reducing the time
spent? I use the same
PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Stanton
Sent: Friday, June 20, 2008 12:08 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Performance on HP
You are measuring the speed of the respective machines. Benchmark each
one to get relative performance.
Andrea
Now that I have SQLite compiled on HP, I am starting to test
performance. So far it's pretty disappointing though.
I am comparing performance of SQLite versus an in-house directory access
system. I have the same table structure and data for each of them. The
code reads some data from an input
Sorry somehow I sent that before I was quite finished. I'm just
wondering if there is anything else I should try. About 30,000 rows are
found in the end, and it can do this on Windows in less than a second.
I'm convinced it shouldn't take 30 seconds on HP. I know the OS's
caching method will
You are measuring the speed of the respective machines. Benchmark each
one to get relative performance.
Andrea Connell wrote:
Sorry somehow I sent that before I was quite finished. I'm just
wondering if there is anything else I should try. About 30,000 rows are
found in the end, and it
Hi Andrea,
I'm interested in your query:
Andrea Connell wrote:
char * qry = SELECT * FROM LEVEL1 WHERE COUNTRY_ID = ? AND
DIR_SEARCH_AREA1 = ? AND ADDRESS_TYPE = ? AND PHONETIC_KEY = ? AND
PHONETIC_KEY ? ;;
char * qry2 = SELECT * FROM LEVEL2 WHERE
PARENT_KEY = ? AND PRIM_NBR_LOW = ?
PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Friday, June 20, 2008 12:28 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Performance on HP
Hi Andrea,
I'm interested in your query:
Andrea Connell wrote:
char * qry = SELECT * FROM LEVEL1 WHERE
Database
Subject: Re: [sqlite] Performance on HP
You are measuring the speed of the respective machines. Benchmark each
one to get relative performance.
Andrea Connell wrote:
Sorry somehow I sent that before I was quite finished. I'm just
wondering if there is anything else I should try. About
Andrea Connell wrote:
I was originally using LIKE but since that can't make use of indexing I
found this as an alternative to attempt to speed up the query.
So if I wanted to search PHONETIC_KEY LIKE 'ABCD%' I replace it with
PHONETIC_KEY = 'ABCD' AND PHONETIC_KEY 'ABCE'
The optimizer
Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Stanton
Sent: Friday, June 20, 2008 12:08 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Performance on HP
You are measuring the speed of the respective machines. Benchmark each
one to get relative
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