Re: orion + multi processor's X86 PC
The way Java works with respect to CPUs is it implements threading through the native OS it's running on. That way the programmer doesn't have to deal with OS-specific process and threading architectures in his code. The only time this isn't the case is with older VM's on Linux and UNIX where green threads were used. Green threads were a user-level thread library that made the JVM appear to the OS as a single-threaded process. You can still find green threads in some 1.2.x JVMs on Linux and Solaris, but I wouldn't recommend anything less than a 1.3 JVM anyway. So a JVM running on an SMP system is responsible for cooperating with the OS to manage threads across the processors. Orion, JRun, Tomcat, etc. do nothing to limit or enhance SMP support in the Java code because it is entirely up to the JVM and the OS. That said, any recent JVM (i.e., 1.3) from any JVM vendor will support SMP because they all rely on native thread implementations. Scott Stirling On 26 Jan 2001 08:42:01 +0100, PHiL wrote: Hi, We planned to go on production state of our developpement under ORION, but we don't have a clue on multiprocessors (SMP) and Orion. If we run a X86 PC server with 2 XEON and sun's JVM 1.3 + Orion + NT or 2000, is this will be enought to take advantage of SMP ??? Maybe we need to run 2 JVMs and setup a "cluster like" config ??? If someone expirience this, just let us know. Thanks. PHiL.
Re: orion + multi processor's X86 PC
At 08:42 26.01.2001 , you wrote: Hi, We planned to go on production state of our developpement under ORION, but we don't have a clue on multiprocessors (SMP) and Orion. If we run a X86 PC server with 2 XEON and sun's JVM 1.3 + Orion + NT or 2000, is this will be enought to take advantage of SMP ??? Maybe we need to run 2 JVMs and setup a "cluster like" config ??? no, you'll be ok. one of our prod systems (linux however) is exactly like that and it does use both processors very well. since NT's threading is even supposed to be better than linux's :( currently I don't see why you shouldn't see the same. HTH robert If someone expirience this, just let us know. Thanks. PHiL. (-) Robert Krger (-) SIGNAL 7 Gesellschaft fr Informationstechnologie mbH (-) Brder-Knau-Str. 79 - 64285 Darmstadt, (-) Tel: 06151 665401, Fax: 06151 665373 (-) [EMAIL PROTECTED], www.signal7.de
Re: orion + multi processor's X86 PC
Windows 2000 dual processor box runs very well with 1.4.5 and uses both processors quite nicely. --- Robert Krueger [EMAIL PROTECTED] wrote: At 08:42 26.01.2001 , you wrote: Hi, We planned to go on production state of our developpement under ORION, but we don't have a clue on multiprocessors (SMP) and Orion. If we run a X86 PC server with 2 XEON and sun's JVM 1.3 + Orion + NT or 2000, is this will be enought to take advantage of SMP ??? Maybe we need to run 2 JVMs and setup a "cluster like" config ??? no, you'll be ok. one of our prod systems (linux however) is exactly like that and it does use both processors very well. since NT's threading is even supposed to be better than linux's :( currently I don't see why you shouldn't see the same. HTH robert If someone expirience this, just let us know. Thanks. PHiL. (-) Robert Krüger (-) SIGNAL 7 Gesellschaft für Informationstechnologie mbH (-) Brüder-Knauß-Str. 79 - 64285 Darmstadt, (-) Tel: 06151 665401, Fax: 06151 665373 (-) [EMAIL PROTECTED], www.signal7.de __ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices. http://auctions.yahoo.com/
