Re: [sqlite] Optimal page size

2005-10-25 Thread Chris Schirlinger
> For what it is worth I did some trials in matching page size to the > underlying virtual memory page size and was surprised to find that I did > not measure any significant performance change. My guess is that it is > the structure of the data in your application which would be sensitive > t

Re: [sqlite] Optimal page size

2005-10-25 Thread John Stanton
For what it is worth I did some trials in matching page size to the underlying virtual memory page size and was surprised to find that I did not measure any significant performance change. My guess is that it is the structure of the data in your application which would be sensitive to page siz

Re: [sqlite] Optimal page size

2005-10-25 Thread Florian Weimer
* Chris Schirlinger: > 4096 in Win32 machines and 1024 on nix ones (I think, I am no expert > on Unix style OS's) This depends on the file system. On Linux on x86, it's typically 4096 bytes. According to my performance measurements, switching from page size of 1024 bytes to 4096 bytes gives a

RE: [sqlite] Optimal page size

2005-10-25 Thread Allan, Mark
> Sent: 25 October 2005 11:40 > To: sqlite-users@sqlite.org > Subject: [sqlite] Optimal page size > > > I could not find a document explaining how to find the > optimal value for the > "page size" parameter. > Should I set the page size to match the alloca

Re: [sqlite] Optimal page size

2005-10-25 Thread Chris Schirlinger
We found the best setting for page size was to match the size of the cluster size of the drive the database was expected to run on 4096 in Win32 machines and 1024 on nix ones (I think, I am no expert on Unix style OS's) I would think, if you set it to the exact size of a number of records all

Re: [sqlite] Optimal page size

2005-10-25 Thread Martin Engelschalk
Hi Paolo, i met the same problem. I have experimented with the page size and found that the cluster size of the file system brought the best results. However, the gain in speed was not very big (5%) Martin Zibetti Paolo schrieb: I could not find a document explaining how to find the optima

[sqlite] Optimal page size

2005-10-25 Thread Zibetti Paolo
I could not find a document explaining how to find the optimal value for the "page size" parameter. Should I set the page size to match the allocation size (cluster size) of the file system ? Should I set it so that each page contains exactly a given number of records (i.e. no record is split betwe