Re: [sqlite] Multiuser experience under win32 anyone?
> Hi all, > > Has anyone been doing some testing on how sqlite performs in a networked > multiuser environment? > > Cheers I think what I and a lot of other users do in a situation like this is to wrap a server around SQLite itself that serializes requests so that you only ever run the DB from one thread. While it requires more work, I have found that SQLite performs quite well like this, depending on what you're trying to do. Obviously only one requests can be processed at a time, but since in most situations SQLite is very fast, you don't notice it unless you are really trying to do some complex querying. I guess it just really comes down to what you're trying to accomplish and what you need the database for. Jay Macaulay - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [sqlite] Multiuser experience under win32 anyone?
In the real world you only need one user to start a transaction, and go to lunch, then the performance gets, as we say in the south, "mighty poor!' Fred -Original Message- From: Balthasar Indermuehle [mailto:[EMAIL PROTECTED] Sent: Monday, March 15, 2004 10:34 AM To: 'Williams, Ken'; [EMAIL PROTECTED] Subject: RE: [sqlite] Multiuser experience under win32 anyone? Thanks, I have read that from the FAQ, but how well/not well does it perform effectively (numbers)? Has anyone run tests on how many selects and inserts a second can be performned from, say, 5 clients that access the same DB located on a network drive? Balthasar Indermuehle Inside Systems GmbH http://www.inside.net "Louis Pasteur's theory of germs is ridiculous fiction." Pierre Pachet, Professor of Physiology at Toulouse, 1872 . -Original Message- From: Williams, Ken [mailto:[EMAIL PROTECTED] Sent: Monday, March 15, 2004 09:19 To: 'Balthasar Indermuehle'; [EMAIL PROTECTED] Subject: RE: [sqlite] Multiuser experience under win32 anyone? > -Original Message- > From: Balthasar Indermuehle [mailto:[EMAIL PROTECTED] > Sent: Monday, March 15, 2004 10:03 AM > To: [EMAIL PROTECTED] > Subject: [sqlite] Multiuser experience under win32 anyone? > > > Hi all, > > Has anyone been doing some testing on how sqlite performs in > a networked multiuser environment? If you mean that multiple users will try to connect to the DB at the same time, I'd say SQLite isn't going to perform well. Traditional client-server databases put a lot of work into supporting this model efficiently (by supporting things like table-level or row-level locking, rather than database-level like SQLite) and SQLite puts no work into it. This assumes that multiple users will be reading *and* writing. If they're all just reading, SQLite might be fine. -Ken - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [sqlite] Multiuser experience under win32 anyone?
Balthasar Indermuehle wrote: Has anyone been doing some testing on how sqlite performs in a networked multiuser environment? Most network filesystems are *really slow*. This, in turn, makes SQLite run really slow when used over a network filesystem. You should look into a client/server model if you want multi-user access to a networked database. Either go with a client/server RDBMS or put a server wrapper around SQLite. -- D. Richard Hipp -- [EMAIL PROTECTED] -- 704.948.4565 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sqlite] Magically turning a memory blob into an SQLite memory db?
Hi, How difficult is it to have a blob in memory which contains a binary image of an SQLite disk database, from which to create an instance of an SQLite memory database? IOW, instead of creating an empty memory database and then populating it with data, I want to go from a blob of memory to an application-specific fully populated memory database. For those who are familar with OpenSSL programming, I'm talking about something similar to its BIO_s_mem, into which one can stuff a binary string representing the serialisation of, say, an X.509 cert, and create (a pointer to) an X509 struct out of it. An idiomatic usage in OpenSSL's context is to keep a trusted CA cert or RSA public key within the application binary, instead of in a disk file which can be edited. TIA. Cheers. -- Ng Pheng Siong <[EMAIL PROTECTED]> http://firewall.rulemaker.net -+- Firewall Change Management & Version Control http://sandbox.rulemaker.net/ngps -+- Open Source Python Crypto & SSL - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [sqlite] Multiuser experience under win32 anyone?
Thanks, I have read that from the FAQ, but how well/not well does it perform effectively (numbers)? Has anyone run tests on how many selects and inserts a second can be performned from, say, 5 clients that access the same DB located on a network drive? Balthasar Indermuehle Inside Systems GmbH http://www.inside.net "Louis Pasteur's theory of germs is ridiculous fiction." Pierre Pachet, Professor of Physiology at Toulouse, 1872 . -Original Message- From: Williams, Ken [mailto:[EMAIL PROTECTED] Sent: Monday, March 15, 2004 09:19 To: 'Balthasar Indermuehle'; [EMAIL PROTECTED] Subject: RE: [sqlite] Multiuser experience under win32 anyone? > -Original Message- > From: Balthasar Indermuehle [mailto:[EMAIL PROTECTED] > Sent: Monday, March 15, 2004 10:03 AM > To: [EMAIL PROTECTED] > Subject: [sqlite] Multiuser experience under win32 anyone? > > > Hi all, > > Has anyone been doing some testing on how sqlite performs in > a networked multiuser environment? If you mean that multiple users will try to connect to the DB at the same time, I'd say SQLite isn't going to perform well. Traditional client-server databases put a lot of work into supporting this model efficiently (by supporting things like table-level or row-level locking, rather than database-level like SQLite) and SQLite puts no work into it. This assumes that multiple users will be reading *and* writing. If they're all just reading, SQLite might be fine. -Ken - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [sqlite] Multiuser experience under win32 anyone?
> -Original Message- > From: Balthasar Indermuehle [mailto:[EMAIL PROTECTED] > Sent: Monday, March 15, 2004 10:03 AM > To: [EMAIL PROTECTED] > Subject: [sqlite] Multiuser experience under win32 anyone? > > > Hi all, > > Has anyone been doing some testing on how sqlite performs in > a networked multiuser environment? If you mean that multiple users will try to connect to the DB at the same time, I'd say SQLite isn't going to perform well. Traditional client-server databases put a lot of work into supporting this model efficiently (by supporting things like table-level or row-level locking, rather than database-level like SQLite) and SQLite puts no work into it. This assumes that multiple users will be reading *and* writing. If they're all just reading, SQLite might be fine. -Ken - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sqlite] Multiuser experience under win32 anyone?
Hi all, Has anyone been doing some testing on how sqlite performs in a networked multiuser environment? Cheers Balthasar Indermuehle Inside Systems GmbH http://www.inside.net "Louis Pasteur's theory of germs is ridiculous fiction." Pierre Pachet, Professor of Physiology at Toulouse, 1872 . - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [sqlite] Borland C++ Builder 6
eno wrote: Drew, Stephen wrote: Further to my original question, does anyone know why the SQLite library compiles when (and only when, as far as I can tell) the following lines in SQLiteInt.h : #include #include #include #include are replaced with the original C equivalents: #include #include #include #include Thanks, Steve seems that Borland Builder 6 doesn't have state-of-the-art C++ header files, or is holding these in separate C++ include directories, thus not finding them when compiling a ".c" C source file. BTW: As of 2.8.12 the C header files are included in sqliteint.h, at least in my copy. cvs annotate shows me that the standard C header files have been unchanged in the sqliteInt.h file since before the first public release in May of 2000. Those four lines have never been different. I don't know where Mr. Drew got his "" changes. But he didn't get them from the SQLite source tree. -- D. Richard Hipp -- [EMAIL PROTECTED] -- 704.948.4565 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [sqlite] Borland C++ Builder 6
Drew, Stephen wrote: Further to my original question, does anyone know why the SQLite library compiles when (and only when, as far as I can tell) the following lines in SQLiteInt.h : #include #include #include #include are replaced with the original C equivalents: #include #include #include #include Thanks, Steve seems that Borland Builder 6 doesn't have state-of-the-art C++ header files, or is holding these in separate C++ include directories, thus not finding them when compiling a ".c" C source file. BTW: As of 2.8.12 the C header files are included in sqliteint.h, at least in my copy. /eno - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [sqlite] Borland C++ Builder 6
Further to my original question, does anyone know why the SQLite library compiles when (and only when, as far as I can tell) the following lines in SQLiteInt.h : #include #include #include #include are replaced with the original C equivalents: #include #include #include #include Thanks, Steve -Original Message- From: Drew, Stephen [mailto:[EMAIL PROTECTED] Sent: Monday, March 15, 2004 11:36 AM To: '[EMAIL PROTECTED]' Subject: [sqlite] Borland C++ Builder 6 Has anyone any experience of compiling the SQLite library with Borland C++ Builder 6 and it's shipped version of STLPort? Regards, Steve - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sqlite] Borland C++ Builder 6
Has anyone any experience of compiling the SQLite library with Borland C++ Builder 6 and it's shipped version of STLPort? Regards, Steve
