It is production server. I am a staff of the company where I have to deploy the application. We will use the server only at office time. At most 12 hours a day. After that shut it down. I dont know what to name this kind of machines. I want to run the machine to run 12 hours a day and overcome the trouble of data loss. Any way u r mails have given me lots of insight. I think I have to learn more about hardware configurations. Why u r suggesting dual processors ?. Can a dual processor system switch to a single processor if one fails ?. Is there any bechmarks on hardware runningjava web applications ? If u suggest me any discussion forums or mailing lists where I can ask this kind of questions I will not bother u with a silly question.
Thanks for the reply regards Antony ----- Original Message ----- From: "John Turner" <[EMAIL PROTECTED]> To: "Tomcat Users List" <[EMAIL PROTECTED]> Sent: Friday, June 20, 2003 6:35 PM Subject: Re: [OT] best hardware config for Tomcat > > The biggest effect on Tomcat's performance will be the architecture and > design of your application. You can buy the biggest fastest server in the > world, and have lousy performance if your application architecture is poor. > > If this is a production server, the absolute minimum I would consider for > "production", that is, for providing services that others pay me to > provide, and providing those services in such a way as to have the highest > uptime possible, is: > > Abs. minimum: > P3-1.4 GHz (dual absolutely preferred) > 1024 GB RAM > 2 36GB SCSI drives, RAID 1 (mirrored) > 100Mbps NIC > > Medium: > Dual P3-1.4GHz > 2GB RAM > 3 36GB SCSI drives, RAID 5 (2 + spare = 72GB usable) > > Better: > Dual P3-1.4 or higher > 4GB RAM > 3-5 36GB SCSI drives, RAID 5 > > Still Better: > Dual P3-1.4 or higher > 6GB RAM > as much disk as you can provide > > Obviously, disk depends on how much you think you will need. My servers > provide services to about 25 different clients. Each has their own Tomcat > instance. My servers are dual P3, 6GB RAM, 800GB-1TB disk in RAID-5 with > parity and hot spare, dual everything (dual NIC, dual power supply, dual > fans, etc). > > Don't get bogged down in desktop PC terminology like DDR RAM, etc....for > servers that sort of stuff is irrelevant. You want stability, not > speed...having the fastest CPU or the fastest RAM technology does you > nothing if your server keeps going down. For servers (if you're serious > about it being a server), you want redundancy, parity and error-checking > and spares over everything else. If it were up to me, I would take a > budget of X dollars and trade performance specs like MHz and GB for > redundancy, all day. Drop back on CPU and RAM if it means you can get RAID > disk (hardware RAID is better than software RAID), redundant power > supplies, etc. If all you are doing is looking to buy a desktop PC and > call it a server, then just buy whatever you want...it won't really matter, > and sooner or later your "server" will go down. > > Even then, pay attention to the architecture and design of your > application, and test it under load...that will make more of a difference > than jacking up some RAM or CPU hardware. > > John > > On Fri, 20 Jun 2003 18:04:34 +0530, Antony <[EMAIL PROTECTED]> > wrote: > > > Thanks for the reply. I had never thought of the RAID sub system. My > > situation is that there is no one I know to advice me in this regard and > > my > > company can't affod any highly paid consultancy. That is why asked a > > question like this here. > > Another question. Do Tomcat a requires a faster hard disk. The > > application uses JSP and Servlets only. No HTML pages are used and it > > generates some PDF and Excel files. It also serves some small images > > files > > from local hard disk. I think Tomcat will cache these images. Now my > > concern > > is whether Tomcat's performance increases by faster DDR RAM. > > > > regards Antony > > > > ----- Original Message ----- > > From: "John Turner" <[EMAIL PROTECTED]> > > To: "Tomcat Users List" <[EMAIL PROTECTED]> > > Sent: Thursday, June 19, 2003 6:09 PM > > Subject: Re: [OT] best hardware config for Tomcat > > > > > >> > >> I won't get into specifics, but I can tell you that if you are planning > >> to > >> put this server into production, and run Oracle on it, a single hard > >> disk > >> is the WORST thing you can do, for a whole range of reasons. > >> > >> In most cases, CPU and RAM are not bottlenecks...disk is. When in > >> doubt, > >> get more and faster disk, even if it means less RAM and less CPU. > >> > >> At a minimum you will want RAID 1...better yet, two systems disks > >> mirrored > >> with RAID 1 containing your OS and systems files, and then a RAID 5 > >> array > >> for Oracle. > >> > >> I strongly suggest you consult a professional. Do not try to spec this > > out > >> on your own, it is clear that you are not familiar on some key points of > >> hardware provisioning. This isn't bad, I am just suggesting that you > >> should find someone who is familiar, and will recommend an adequate > >> system > >> for you. Making the wrong decision now could harm your efforts in the > >> future. > >> > >> If you're planning on putting this server into production, and selling > >> the > >> services on this server to other people, it would be unethical to make > >> promises about uptime and reliability unless you at least have a RAID > >> array, redundant power supplies, a 4-hour window service contract, and > >> preferably a duplicate system for hot backup. > >> > >> John > >> > >> On Thu, 19 Jun 2003 12:25:47 +0530, Antony <[EMAIL PROTECTED]> > >> wrote: > >> > >> > Hi all, > >> > If it is not the place to ask this question forgive me Please any one > >> > tell me a place to ask this question. > >> > I want to know the most suitable hardware configuration for Tomcat. We > >> > have to run both Tomcat and Oracle 8i on it. It is business( intranet > >> ) > >> > application with about 10 users accessing at starting but planning to > >> > take > >> > it to 60 users in future. Then we can increase the RAM to accommodate > > new > >> > users. I assume by increasing RAM we Tomcat can service more users. Am > >> I > >> > right ? > >> > I am not an admin or hardware expert. We plan to buy an assembled > >> > system. We can afford only Intel based system. I have several > >> questions. > >> > Do > >> > Tomcat need the processing power of dual processor PIV or single Xeon > >> > processor ?. What kind of memory shall I use SDRAM or DDR ? Do Tomcat > >> > need > >> > large amount of memory or high speed memory ?.We plan to use a single > >> > hard > >> > disk. What type of hard disk is best for this configuration ?. SCSI or > >> > IDE ? > >> > When I lloked at the Intel site I have seen different categories like > >> > server,mainstream ,work station, performance etc. Remember I can't > >> > recommend > >> > any latest high cost technology. > >> > At present three developers are using a single Pentium 4 based system > >> > with 512 MB of SDRAM with Oracle and Tomcat running. It runs fine in > >> it. > >> > We > >> > dont have conducted any stress test on it. We dont know to use JMeter > >> or > >> > something else. I have to give the config details within 2 days. > >> > Any comments will be apprecited. > >> > > >> > Regars > >> > Antony. > >> > > >> > > >> > --------------------------------------------------------------------- > >> > To unsubscribe, e-mail: [EMAIL PROTECTED] > >> > For additional commands, e-mail: [EMAIL PROTECTED] > >> > > >> > > >> > >> > >> > >> -- > >> Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ > >> > >> --------------------------------------------------------------------- > >> 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] > > > > > > > > -- > Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ > > --------------------------------------------------------------------- > 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]
