BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  design question          BorlandTalk.com Forum Index -> C++ Builder (Internet Socket) View previous topic :: View next topic   Author Message Jonathan Benedicto Guest Posted: Thu Apr 14, 2005 8:35 pm    Post subject: design question I'm trying to build a server application, that uses my own custom protocol. Many clients +100 possibly will have connect to this server, and stay connected for hours at a time. Due to the fact that the server will run on a Celeron processor server, what design do you think I should take ? I had thought that I should use a non-blocking single TServerSocket because +100 threads seemed too much for a Celeron. But what design would you suggest ? -- Jonathan Back to top JJ Guest Posted: Fri Apr 15, 2005 10:19 pm    Post subject: Re: design question If you are writing under Windows 2000+ OS you might want to read further on "Overlapped IO using Completion Port IO (CPIO) and thread pooling". With CPIO I've been able to handle over 100,000 connections simultaneously with no problem. Good luck Jeff www.ruamkwamkid.com "Jonathan Benedicto" <incorrect (AT) no (DOT) server> wrote Quote: I'm trying to build a server application, that uses my own custom protocol. Many clients +100 possibly will have connect to this server, and stay connected for hours at a time. Due to the fact that the server will run on a Celeron processor server, what design do you think I should take ? I had thought that I should use a non-blocking single TServerSocket because +100 threads seemed too much for a Celeron. But what design would you suggest ? -- Jonathan Back to top Jonathan Benedicto Guest Posted: Fri Apr 15, 2005 10:26 pm    Post subject: Re: design question "JJ" <mangpoh_007 (AT) hotmail (DOT) com> wrote Quote: If you are writing under Windows 2000+ OS you might want to read further on "Overlapped IO using Completion Port IO (CPIO) and thread pooling". With CPIO I've been able to handle over 100,000 connections simultaneously with no problem. Thank you for this info. The server will be running Windows Server 2003. Where can I read up about CPIO ? MSDN ? Jonathan Back to top JJ Guest Posted: Fri Apr 15, 2005 11:05 pm    Post subject: Re: design question MSDN and Google using "Overlapped IO using Completion Port IO" Good reading! "Jonathan Benedicto" <incorrect (AT) no (DOT) server> wrote Quote: "JJ" <mangpoh_007 (AT) hotmail (DOT) com> wrote in message news:42603dee (AT) newsgroups (DOT) borland.com... If you are writing under Windows 2000+ OS you might want to read further on "Overlapped IO using Completion Port IO (CPIO) and thread pooling". With CPIO I've been able to handle over 100,000 connections simultaneously with no problem. Thank you for this info. The server will be running Windows Server 2003. Where can I read up about CPIO ? MSDN ? Jonathan Back to top Jonathan Benedicto Guest Posted: Fri Apr 15, 2005 11:32 pm    Post subject: Re: design question "JJ" <mangpoh_007 (AT) hotmail (DOT) com> wrote Quote: MSDN and Google using "Overlapped IO using Completion Port IO" Thank you for this info. It seems fairly complex. Could you give me some help on how to do this ? Jonathan Back to top Matt Jacobs Guest Posted: Sat Apr 16, 2005 4:31 am    Post subject: Re: design question "Jonathan Benedicto" <incorrect (AT) no (DOT) server> wrote: Quote: I'm trying to build a server application, that uses my own custom protocol. Many clients +100 possibly will have connect to this server, and stay connected for hours at a time. Due to the fact that the server will run on a Celeron processor server, what design do you think I should take ? I had thought that I should use a non-blocking single TServerSocket because +100 threads seemed too much for a Celeron. But what design would you suggest ? That's not an excessive number of connections. In that situation, I would probably use Indy. If you find you are having performance issues, you might want to look at IOCP. But even before that, I would try to use XML over HTTP via ISAPI/IIS. Why write your own server if you don't have to? Back to top Jonathan Benedicto Guest Posted: Sat Apr 16, 2005 4:44 am    Post subject: Re: design question "Matt Jacobs" <noyb (AT) noyb (DOT) com> wrote Quote: That's not an excessive number of connections. In that situation, I would probably use Indy. If you find you are having performance issues, you might want to look at IOCP. But even before that, I would try to use XML over HTTP via ISAPI/IIS. Why write your own server if you don't have to? I guess I could use ISAPI via HTTP, it is just that building my own server is much easier. I also don't have BCB Enterprise, so making ISAPI won't be too easy. But I'll definitely think it over. Thank you for the suggestion. Because of the nature of my system, the number of connections at any one time might be from 10 - 1000+, so that it why I wanted to avoid Indy. Jonathan Back to top Matt Jacobs Guest Posted: Sat Apr 16, 2005 5:17 pm    Post subject: Re: design question "Jonathan Benedicto" <incorrect (AT) no (DOT) server> wrote: Quote: Because of the nature of my system, the number of connections at any one time might be from 10 - 1000+, so that it why I wanted to avoid Indy. If that's the situation, then you really want to use IOCP, which IIS gives you for free. Back to top Jonathan Benedicto Guest Posted: Sat Apr 16, 2005 5:31 pm    Post subject: Re: design question "Matt Jacobs" <noyb (AT) noyb (DOT) com> wrote Quote: If that's the situation, then you really want to use IOCP, which IIS gives you for free. Thank you, I'll definitely look into it. Jonathan Back to top Jonathan Benedicto Guest Posted: Sat Apr 16, 2005 6:30 pm    Post subject: Re: design question "Matt Jacobs" <noyb (AT) noyb (DOT) com> wrote Quote: If that's the situation, then you really want to use IOCP, which IIS gives you for free. How would you suggest I go about using IIS ? ASP.NET ? Back to top Chad Z. Hower aka Kudzu Guest Posted: Sat Apr 16, 2005 7:03 pm    Post subject: Re: design question Matt Jacobs <noyb (AT) noyb (DOT) com> wrote in news:g2i261hgqgclognd1hq6jh46hss7aricfu@ 4ax.com: Quote: If that's the situation, then you really want to use IOCP, which IIS gives you for free. Not quite! IIS uses IOCP to serve files, but to serve dynamic content it switches off to worker threads with a default of max 10 per app. Unless you impelement a special IOCP like API in your handlers, you've "lost" the IOCP. -- Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/ "Programming is an art form that fights back" Want to keep up to date with Indy? Join Indy News - it free! http://www.atozed.com/indy/news/ Back to top Jonathan Benedicto Guest Posted: Sat Apr 16, 2005 7:07 pm    Post subject: Re: design question "Chad Z. Hower aka Kudzu" <cpub (AT) hower (DOT) org> wrote Quote: Not quite! IIS uses IOCP to serve files, but to serve dynamic content it switches off to worker threads with a default of max 10 per app. Unless you impelement a special IOCP like API in your handlers, you've "lost" the IOCP. Thank you for this info. Do you think that I should just build my own IOCP server ? Jonathan Back to top Chad Z. Hower aka Kudzu Guest Posted: Sun Apr 17, 2005 9:39 am    Post subject: Re: design question "Jonathan Benedicto" <incorrect (AT) no (DOT) server> wrote in news:42616287$1 @newsgroups.borland.com: Quote: Thank you for this info. Do you think that I should just build my own IOCP server ? I didnt see the original post so I dont know what you are trying to do. :) -- Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/ "Programming is an art form that fights back" Got Indy? Got the book? http://www.atozed.com/indy/book/ Back to top Jonathan Benedicto Guest Posted: Mon Apr 18, 2005 1:13 pm    Post subject: Re: design question "Chad Z. Hower aka Kudzu" <cpub (AT) hower (DOT) org> wrote Quote: I didnt see the original post so I dont know what you are trying to do. I am trying to build a server that must handle 100 - 1000+ connections that are connected for hours at a time. The clients do not do much communication, just a few requests now and then. And, the server is probably going to be a Celeron. Jonathan Back to top Chad Z. Hower aka Kudzu Guest Posted: Wed Apr 20, 2005 6:00 pm    Post subject: Re: design question "Jonathan Benedicto" <incorrect (AT) no (DOT) server> wrote in news:4263b281 @newsgroups.borland.com: Quote: I am trying to build a server that must handle 100 - 1000+ connections that are connected for hours at a time. The clients do not do much communication, just a few requests now and then. You can do that even with Indy now, but you'd need to forego the threads and use a custom scheduler. For such a item you dont even need fibers. UDP would be a good candidate too if its possible. -- Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/ "Programming is an art form that fights back" Is Indy useful to you? 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