Re: [Firebird-net-provider] Connection Pool
Pham Huu Le Quoc Phuc wrote:
> Hi!
>
> Can I use connection pool with “using keyword”. Is it leak memory?
>
>
>
> Using(FbConnection Connection = new FbConnection(ConnectionString)
>
> {
>
> }
>
Yes you can. It's not a memory leak.
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Re: [Firebird-net-provider] Connection pool
On Tue, Oct 13, 2015, at 22:53, Michał Ziemski wrote:
> I would rather also test connectionString.MaxPoolSize with the
> "_available"
> stack
> and not the "_busy" list. This would make connectionString.MaxPoolSize
You mean:
if (_available.Count() + 1 > connectionString.MaxPoolSize)
throw new
InvalidOperationException("Connection
pool is full.");
?
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Re: [Firebird-net-provider] Connection pool
Hi!
I've made a pull request on github with my proposal.
Cheers!
Michał
2015-10-14 7:52 GMT+02:00 Jiří Činčura :
> On Tue, Oct 13, 2015, at 22:53, Michał Ziemski wrote:
> > I would rather also test connectionString.MaxPoolSize with the
> > "_available"
> > stack
> > and not the "_busy" list. This would make connectionString.MaxPoolSize
>
> You mean:
> if (_available.Count() + 1 > connectionString.MaxPoolSize)
> throw new
>
> InvalidOperationException("Connection
> pool is full.");
> ?
>
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Re: [Firebird-net-provider] Connection pool bug
go ahead. do it properly.
On Nov 12, 2013 4:08 PM, "Jiri Cincura" wrote:
> Hi *,
>
> I found a bug in connection pool. I *don't* know the root cause. But
> anyway I think the code there isn't "good" or "nice", so to speak. But
> I currently have an application in front of me, that escalates the
> problem, some memory leaks. I think I might go to rewrite the pooling
> (I implemented one earlier this year for another provider) and test
> it. Hopefully it will be simpler, faster and correct. BUT it might
> (will) not have exactly same API/behavior as the old one (and I don't
> wanna to try mimic it). So it will be huge breaking change if you rely
> on something like that. Of course the major version number will be
> incremented. And I hope I'll not introduce more bugs. ;)
>
> Is there anybody against it?
>
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Re: [Firebird-net-provider] Connection pool bug
Sometimes you it's better to make breaking changes than to live with the mess that results from trying to be too accommodating. I say fix it right. Danny Gorton II Co-founder Absolute Power and Control, LLC www.absolutepowerandcontrol.com 517-499-9069 (mobile) On 11/12/2013 10:07 AM, Jiri Cincura wrote: > Hi *, > > I found a bug in connection pool. I *don't* know the root cause. But > anyway I think the code there isn't "good" or "nice", so to speak. But > I currently have an application in front of me, that escalates the > problem, some memory leaks. I think I might go to rewrite the pooling > (I implemented one earlier this year for another provider) and test > it. Hopefully it will be simpler, faster and correct. BUT it might > (will) not have exactly same API/behavior as the old one (and I don't > wanna to try mimic it). So it will be huge breaking change if you rely > on something like that. Of course the major version number will be > incremented. And I hope I'll not introduce more bugs. ;) > > Is there anybody against it? > -- DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk ___ Firebird-net-provider mailing list Firebird-net-provider@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-net-provider
Re: [Firebird-net-provider] Connection pool bug
I agree.
Hernán MF
> El 12/11/2013, a las 22:28, Zvjezdan Tomičević escribió:
>
> go ahead. do it properly.
>
>> On Nov 12, 2013 4:08 PM, "Jiri Cincura" wrote:
>> Hi *,
>>
>> I found a bug in connection pool. I *don't* know the root cause. But
>> anyway I think the code there isn't "good" or "nice", so to speak. But
>> I currently have an application in front of me, that escalates the
>> problem, some memory leaks. I think I might go to rewrite the pooling
>> (I implemented one earlier this year for another provider) and test
>> it. Hopefully it will be simpler, faster and correct. BUT it might
>> (will) not have exactly same API/behavior as the old one (and I don't
>> wanna to try mimic it). So it will be huge breaking change if you rely
>> on something like that. Of course the major version number will be
>> incremented. And I hope I'll not introduce more bugs. ;)
>>
>> Is there anybody against it?
>>
>> --
>> Jiri {x2} Cincura (x2develop.com founder)
>> http://blog.cincura.net/ | http://www.ID3renamer.com
>>
>> --
>> November Webinars for C, C++, Fortran Developers
>> Accelerate application performance with scalable programming models. Explore
>> techniques for threading, error checking, porting, and tuning. Get the most
>> from the latest Intel processors and coprocessors. See abstracts and register
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Re: [Firebird-net-provider] Connection pool bug
OK guys. First thanks for the support. It's not an easy change and
there's a lot of code already and I need to squeeze myself in, with my
concept. But here are some first numbers:
* [1] With connection pooling ON and OLD provider the application
gained about 276KB in ~30 minutes.
* [2] With connection pooling OFF and OLD provider the application
gained 324 bytes in ~30 minutes.
* [3] With connection pooling ON and OLD provider and explicitly
cleaning the pool the application gained about 1KB in ~33 minutes.
* [4] With connection pooling ON and NEW provider the application
*lost* about 2KB in ~30 minutes.
The application I'm using is not 100% deterministic. It's doing
network requests and running some timers. So it pretty much depends
when the snapshot was taken. I think results are looking good. The [2]
and [4] are basically same, similar [3] and [4].
The tests are all green and the test application (obviously) is not
crashing. That gives me like 50% confidence. :) You can find the build
here https://copy.com/Jh2ebP2sPjyv (.NET 4.5). It has same version
number, it's using same sources, only the connection pooling has been
altered. Thus you can just drop it in your application and try it run.
Or create new and stress it. Whatever you want. I'd like to hear
feedback from your. Even if it's just one quick run, let me know. It
will speed up the deploy greatly.
Also. Backporting the feature to .NET 4.0 is going to be easy. To 3.5
harder, because I rely on ConcurrentDictionary that's in 4.0 and
newer. Bummer. Ideas? Drop 3.5 support? I can implement it on my own
with locking (just for 3.5), but is it worth it?
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Re: [Firebird-net-provider] Connection pool bug
For me it's ok dropping 3.5 support - we took 4.0 when 2.0 support was
dropped.
4.0 support would be very appreciated.
I'll take a look right after delivering our update end of the week.
Thank you for your work!
André Litfin
> -Ursprüngliche Nachricht-
> Von: Jiri Cincura [mailto:disk...@cincura.net]
> Gesendet: Mittwoch, 13. November 2013 16:16
> An: For users and developers of the Firebird .NET providers
> Betreff: Re: [Firebird-net-provider] Connection pool bug
>
> OK guys. First thanks for the support. It's not an easy change and there's
a lot
> of code already and I need to squeeze myself in, with my concept. But here
> are some first numbers:
>
> * [1] With connection pooling ON and OLD provider the application gained
> about 276KB in ~30 minutes.
> * [2] With connection pooling OFF and OLD provider the application gained
> 324 bytes in ~30 minutes.
> * [3] With connection pooling ON and OLD provider and explicitly cleaning
the
> pool the application gained about 1KB in ~33 minutes.
> * [4] With connection pooling ON and NEW provider the application
> *lost* about 2KB in ~30 minutes.
>
> The application I'm using is not 100% deterministic. It's doing network
> requests and running some timers. So it pretty much depends when the
> snapshot was taken. I think results are looking good. The [2] and [4] are
> basically same, similar [3] and [4].
>
> The tests are all green and the test application (obviously) is not
crashing.
> That gives me like 50% confidence. :) You can find the build here
> https://copy.com/Jh2ebP2sPjyv (.NET 4.5). It has same version number, it's
> using same sources, only the connection pooling has been altered. Thus you
> can just drop it in your application and try it run.
> Or create new and stress it. Whatever you want. I'd like to hear feedback
> from your. Even if it's just one quick run, let me know. It will speed up
the
> deploy greatly.
>
> Also. Backporting the feature to .NET 4.0 is going to be easy. To 3.5
harder,
> because I rely on ConcurrentDictionary that's in 4.0 and newer. Bummer.
> Ideas? Drop 3.5 support? I can implement it on my own with locking (just
for
> 3.5), but is it worth it?
>
> --
> Jiri {x2} Cincura (x2develop.com founder) http://blog.cincura.net/ |
> http://www.ID3renamer.com
>
>
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Re: [Firebird-net-provider] Connection pool bug
I'm not sure about being able to lose 3.5 support. We haven't tested, or planned to test, migrating forward. If 4.0 backward compatibility is OK, then it would be OK, though we aren't using any 4.0 language features. Danny Gorton II Co-founder Absolute Power and Control, LLC www.absolutepowerandcontrol.com 517-499-9069 (mobile) On 11/13/2013 10:15 AM, Jiri Cincura wrote: > OK guys. First thanks for the support. It's not an easy change and > there's a lot of code already and I need to squeeze myself in, with my > concept. But here are some first numbers: > > * [1] With connection pooling ON and OLD provider the application > gained about 276KB in ~30 minutes. > * [2] With connection pooling OFF and OLD provider the application > gained 324 bytes in ~30 minutes. > * [3] With connection pooling ON and OLD provider and explicitly > cleaning the pool the application gained about 1KB in ~33 minutes. > * [4] With connection pooling ON and NEW provider the application > *lost* about 2KB in ~30 minutes. > > The application I'm using is not 100% deterministic. It's doing > network requests and running some timers. So it pretty much depends > when the snapshot was taken. I think results are looking good. The [2] > and [4] are basically same, similar [3] and [4]. > > The tests are all green and the test application (obviously) is not > crashing. That gives me like 50% confidence. :) You can find the build > here https://copy.com/Jh2ebP2sPjyv (.NET 4.5). It has same version > number, it's using same sources, only the connection pooling has been > altered. Thus you can just drop it in your application and try it run. > Or create new and stress it. Whatever you want. I'd like to hear > feedback from your. Even if it's just one quick run, let me know. It > will speed up the deploy greatly. > > Also. Backporting the feature to .NET 4.0 is going to be easy. To 3.5 > harder, because I rely on ConcurrentDictionary that's in 4.0 and > newer. Bummer. Ideas? Drop 3.5 support? I can implement it on my own > with locking (just for 3.5), but is it worth it? > -- DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk ___ Firebird-net-provider mailing list Firebird-net-provider@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-net-provider
Re: [Firebird-net-provider] Connection pool bug
Hi,
On Wed, Nov 13, 2013 at 8:34 PM, Danny Gorton
wrote:
> If 4.0 backward compatibility is
> OK, then it would be OK
It's probbaly not 100%, but in case you're not relying on some "weird"
behavior you found, you should be OK. You can read:
http://msdn.microsoft.com/en-us/library/ee941656%28VS.100%29.aspx
http://msdn.microsoft.com/en-us/library/ee855831%28VS.100%29.aspx
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Re: [Firebird-net-provider] Connection pool bug
And just a one quick "research" question. What's your common
connection lifetime value for pooling? Do you change it or do you use
the default one?
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Re: [Firebird-net-provider] Connection pool bug
I use firebird heavily in sports betting solution, with many simultaneous
connections, in desktop environment, web services and virtually everywhere.
Current deployed version is 2.6.0.0, 3.5 build. No major problems here at
all.
Polling with default value,and for events no polling.
Since DB is hit all the time, i guess it polls constantly.
I have not investigated details about possible leaks.
On Thu, Nov 14, 2013 at 11:35 AM, Jiri Cincura wrote:
> And just a one quick "research" question. What's your common
> connection lifetime value for pooling? Do you change it or do you use
> the default one?
>
>
> --
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>
>
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Re: [Firebird-net-provider] Connection pool bug
On Thu, Nov 14, 2013 at 11:46 AM, Zvjezdan Tomičević wrote:
> Polling with default value
I'm asking to know what "resolution" should the cleanup routine have.
Like if everybody uses lifetime 10s, than resolution 5s is fine, even
10s is fine, though the connection might be in a pool little longer.
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Re: [Firebird-net-provider] Connection pool bug
Thanks for the info Juri. I failed to mention that we're a cross-platform solution, with Linux being the main one, so I'm more concerned with compatibility on Mono than on Windows. It will just require some test cycles we don't have right now. However, that shouldn't really affect what you're doing much since we're also not considering updating the Firebird provider at this time either. The version we have seems to be working just fine and when the time comes we'll plan a full component analysis, test cycle, and repackaging effort. Even if circumstances force us into it sooner than we'd like. Thanks again, Danny Danny Gorton II Co-founder Absolute Power and Control, LLC www.absolutepowerandcontrol.com 517-499-9069 (mobile) On 11/14/2013 05:34 AM, Jiri Cincura wrote: > Hi, > > On Wed, Nov 13, 2013 at 8:34 PM, Danny Gorton > wrote: >> If 4.0 backward compatibility is >> OK, then it would be OK > > It's probbaly not 100%, but in case you're not relying on some "weird" > behavior you found, you should be OK. You can read: > http://msdn.microsoft.com/en-us/library/ee941656%28VS.100%29.aspx > http://msdn.microsoft.com/en-us/library/ee855831%28VS.100%29.aspx > -- DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk ___ Firebird-net-provider mailing list Firebird-net-provider@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-net-provider
Re: [Firebird-net-provider] Connection pool bug
On Thu, Nov 14, 2013 at 5:50 PM, Danny Gorton
wrote:
> However, that shouldn't really affect what you're doing much since we're
Yeah, I just like to hear what are others doing and thinking.
> also not considering updating the Firebird provider at this time either.
> The version we have seems to be working just fine and when the time
> comes we'll plan a full component analysis, test cycle, and repackaging
> effort. Even if circumstances force us into it sooner than we'd like.
Good.
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Re: [Firebird-net-provider] Connection pool bug
OK guys, the new version is out. This work was fully supported by
SMS-Timing. Big thanks to them.
http://blog.cincura.net/233429-ado-net-provider-for-firebird-4-0-0-0-is-ready/
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Re: [Firebird-net-provider] Connection pool bug
Default, planned to monitor some things for possible optimizations, but did not find the time so far. General response time and performance and resources consumption of my C#/Firebird applications is more than fine with the users, so no hurry. > And just a one quick "research" question. What's your common > connection lifetime value for pooling? Do you change it or do you use > the default one? mit freundlichen Grüßen, André Knappstein EDV und Controlling ~~ beta Eigenheim- und Grundstücksverwertungsgesellschaft mbH Hafenweg 4 59192 Bergkamen-Rünthe Telefon: +49 2389 9240 140 Telefax: +49 2389 9240 150 e-mail: knappst...@beta-eigenheim.de Amtsgericht Hamm Nr. B 420 Geschäftsführer: Achim Krähling, Dirk Salewski und Matthias Steinhaus USt-IDNr.: DE 125215402 -- DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk ___ Firebird-net-provider mailing list Firebird-net-provider@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-net-provider
Re: [Firebird-net-provider] Connection pool bug
Thanks to SMS-Timing and even more thanks to you. I'll do some test installs later. Did I get that right and you're in Siegburg? I'll install and test right there, then. > OK guys, the new version is out. This work was fully supported by > SMS-Timing. Big thanks to them. > http://blog.cincura.net/233429-ado-net-provider-for-firebird-4-0-0-0-is-ready/ mit freundlichen Grüßen, André Knappstein EDV und Controlling ~~ beta Eigenheim- und Grundstücksverwertungsgesellschaft mbH Hafenweg 4 59192 Bergkamen-Rünthe Telefon: +49 2389 9240 140 Telefax: +49 2389 9240 150 e-mail: knappst...@beta-eigenheim.de Amtsgericht Hamm Nr. B 420 Geschäftsführer: Achim Krähling, Dirk Salewski und Matthias Steinhaus USt-IDNr.: DE 125215402 -- DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk ___ Firebird-net-provider mailing list Firebird-net-provider@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-net-provider
Re: [Firebird-net-provider] Connection pool bug
On Mon, Nov 18, 2013 at 12:28 PM, André Knappstein
wrote:
> Did I get that right and you're in
> Siegburg?
No, only in Prague. :(
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Re: [Firebird-net-provider] Connection pool bug
> No, only in Prague. OK, I will nevertheless try to put all required stuff on my yoga and test it there and then. I can't go to two FB-Seminars in 4 days, or my wife will close the connection without doing a proper commit() :-) Otherwise I'd love to join there. If I should make a recommendation for you guys for the evening dinners: We have only recently been here: http://www.krcmaupavouka.cz/ with a group of IT guys. Very good food and beer and for the atmosphere: check the "galery" and "interiour" section on the website :-) -- DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk ___ Firebird-net-provider mailing list Firebird-net-provider@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-net-provider
Re: [Firebird-net-provider] Connection pool performance issue?
Sean wrote:
> Question:
> In scenario 1, the average execution time for an iteration dropped from 1.2s
> to 4s when 2 threads competed for 1 connection from the pool. Is this a
> performance problem?
Theoretically yes, in real world IMO not so. The pool has great impact
on speed when line or server are busy, under load, etc. Doing this
"batch" opening doesn't make in real app sense - if it's interactive
aplication user is not able do to actions so fast and if it's batch app.
there's no need to use connection pool.
Just my $0.02. But feel free to fetch sources and do any optimalization
on pool.
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Re: [Firebird-net-provider] Connection pool performance issue?
In my case, I have a client-server architecture. Client collects data and
server saves them into embedded firebird database.
Clients collect data automaticly and report to server periodically. The
number of clients are different in different deployment, from 1 to 500. When
there are a lot of clients reporting to server (say, 500), the server load
is high. Could you suggest what I shall do?
Best,
Sean
"Jiri Cincura" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Sean wrote:
>> Question:
>> In scenario 1, the average execution time for an iteration dropped from
>> 1.2s
>> to 4s when 2 threads competed for 1 connection from the pool. Is this a
>> performance problem?
>
> Theoretically yes, in real world IMO not so. The pool has great impact
> on speed when line or server are busy, under load, etc. Doing this
> "batch" opening doesn't make in real app sense - if it's interactive
> aplication user is not able do to actions so fast and if it's batch app.
> there's no need to use connection pool.
>
> Just my $0.02. But feel free to fetch sources and do any optimalization
> on pool.
>
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Re: [Firebird-net-provider] Connection pool performance issue?
Sean wrote:
> In my case, I have a client-server architecture. Client collects data and
> server saves them into embedded firebird database.
> Clients collect data automaticly and report to server periodically. The
> number of clients are different in different deployment, from 1 to 500. When
> there are a lot of clients reporting to server (say, 500), the server load
> is high. Could you suggest what I shall do?
What's the time between connections from one client?
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Re: [Firebird-net-provider] Connection pool performance issue?
For every client tcp connection, a bunch of transactions are performed
consecutively to insert different types of data into different tables. A db
connection is opened and closed for each transaction. There is no explicit
pause between transactions, so I guess the time between transactions can be
as small as 10 ms. It takes 10ms ~ 500ms to finish one transaction.
Clients report to server every 10 minutes. Since clients are started
randomly, on server side there is no pattern of client connections.
(Do I answer your question?)
"Jiri Cincura" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Sean wrote:
>> In my case, I have a client-server architecture. Client collects data and
>> server saves them into embedded firebird database.
>> Clients collect data automaticly and report to server periodically. The
>> number of clients are different in different deployment, from 1 to 500.
>> When
>> there are a lot of clients reporting to server (say, 500), the server
>> load
>> is high. Could you suggest what I shall do?
>
> What's the time between connections from one client?
>
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Re: [Firebird-net-provider] Connection pool performance issue?
Sean wrote:
> For every client tcp connection, a bunch of transactions are performed
> consecutively to insert different types of data into different tables. A db
> connection is opened and closed for each transaction. There is no explicit
Keep connection opened. There's no need to open/close it between trans.
> pause between transactions, so I guess the time between transactions can be
> as small as 10 ms. It takes 10ms ~ 500ms to finish one transaction.
>
> Clients report to server every 10 minutes. Since clients are started
> randomly, on server side there is no pattern of client connections.
>
> (Do I answer your question?)
Yep. :)
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Re: [Firebird-net-provider] Connection pool performance issue?
Ok, I will try that. Thanks a lot for the suggestion.
I thought it didn't matter much since I was using connection pool.
"Jiri Cincura" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Sean wrote:
>> For every client tcp connection, a bunch of transactions are performed
>> consecutively to insert different types of data into different tables. A
>> db
>> connection is opened and closed for each transaction. There is no
>> explicit
>
> Keep connection opened. There's no need to open/close it between trans.
>
>> pause between transactions, so I guess the time between transactions can
>> be
>> as small as 10 ms. It takes 10ms ~ 500ms to finish one transaction.
>>
>> Clients report to server every 10 minutes. Since clients are started
>> randomly, on server side there is no pattern of client connections.
>>
>> (Do I answer your question?)
>
> Yep. :)
>
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Re: [Firebird-net-provider] Connection pool performance issue?
BTW, shall I keep "Connection Lift Time" forever, or set it to some number?
"Jiri Cincura" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Sean wrote:
>> For every client tcp connection, a bunch of transactions are performed
>> consecutively to insert different types of data into different tables. A
>> db
>> connection is opened and closed for each transaction. There is no
>> explicit
>
> Keep connection opened. There's no need to open/close it between trans.
>
>> pause between transactions, so I guess the time between transactions can
>> be
>> as small as 10 ms. It takes 10ms ~ 500ms to finish one transaction.
>>
>> Clients report to server every 10 minutes. Since clients are started
>> randomly, on server side there is no pattern of client connections.
>>
>> (Do I answer your question?)
>
> Yep. :)
>
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Re: [Firebird-net-provider] Connection pool performance issue?
Sean wrote:
> BTW, shall I keep "Connection Lift Time" forever, or set it to some number?
What is the "Connection Lift Time"?
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Re: [Firebird-net-provider] Connection pool performance issue?
Hello: > What is the "Connection Lift Time"? Hope he means Connection Life Time ( when it's 0 connections never dead ) > - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Firebird-net-provider mailing list Firebird-net-provider@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-net-provider
Re: [Firebird-net-provider] Connection pool performance issue?
Carlos Guzmán Álvarez wrote:
> Hope he means Connection Life Time ( when it's 0 connections never dead )
Ha, damn.
AFAIR my advice, you're application doesn't have any benefit from pool,
so connection lifetime is off-topic.
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Re: [Firebird-net-provider] Connection pool performance issue?
My application opens and closes db connections frequently. I think this is
where connection pool can be of the most help, right?
In which scenario should connection pool be used?
"Jiri Cincura" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Carlos Guzm=E1n =C1lvarez wrote:
>> Hope he means Connection Life Time ( when it's 0 connections never dead )
>
> Ha, damn.
>
> AFAIR my advice, you're application doesn't have any benefit from pool, =
>
> so connection lifetime is off-topic.
>
> -- =
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Re: [Firebird-net-provider] Connection pool performance issue?
Sean wrote:
> My application opens and closes db connections frequently. I think this is
> where connection pool can be of the most help, right?
In previous mails you said, that app. is reporting data into DB in
10mins. intervals. I'm confused.
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Re: [Firebird-net-provider] Connection pool performance issue?
So sorry for the confusion. The owner of the embedded database is server,
which handles data reported from hundreds of clients. So the server keeps
open connections, saves the data into db and close connections. (You can
ignore that "10 minutes" thing completely.)
"Jiri Cincura" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Sean wrote:
>> My application opens and closes db connections frequently. I think this
>> is
>> where connection pool can be of the most help, right?
>
> In previous mails you said, that app. is reporting data into DB in
> 10mins. intervals. I'm confused.
>
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Re: [Firebird-net-provider] Connection pool performance issue?
Sean wrote:
> So sorry for the confusion. The owner of the embedded database is server,
> which handles data reported from hundreds of clients. So the server keeps
> open connections, saves the data into db and close connections. (You can
> ignore that "10 minutes" thing completely.)
Humm, I'm little bit lost. But why not to keep connection opened
"forever"? If it's server, there's no problem with this.
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Re: [Firebird-net-provider] Connection pool performance issue?
Yes, I always keep connection opened forever in pool.
The reason I asked about ConnectionLifeTime is that, I saw a post about
changing ConnectionLifeTime for testing a problem, I was wondering if I
shall do it... Looks like there is no need.
"Jiri Cincura" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Sean wrote:
>> So sorry for the confusion. The owner of the embedded database is server,
>> which handles data reported from hundreds of clients. So the server
>> keeps
>> open connections, saves the data into db and close connections. (You can
>> ignore that "10 minutes" thing completely.)
>
> Humm, I'm little bit lost. But why not to keep connection opened
> "forever"? If it's server, there's no problem with this.
>
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Re: [Firebird-net-provider] Connection pool in 2.5
http://tracker.firebirdsql.org/browse/DNET-156 ???
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Re: [Firebird-net-provider] Connection pool in 2.5
> http://tracker.firebirdsql.org/browse/DNET-156 ??? Yes, seems it is same problem... - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Firebird-net-provider mailing list Firebird-net-provider@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-net-provider
Re: [Firebird-net-provider] Connection pool in 2.5
On 3/18/08, sasha <[EMAIL PROTECTED]> wrote:
> > http://tracker.firebirdsql.org/browse/DNET-156 ???
>
>
> Yes, seems it is same problem...
I haven't time to look at this issue. But it's important.
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