I have some questions about threads and the JDK. I've read the README files and done some preliminary scouring of the 'net and list archives to no avail, but I haven't dug too deeply, and have just subscribed to this list, so forgive me if this is deeply covered elsewhere. I have access to two identical dual P-II machines. One has been running RedHat 5.2 (glibc 2.0 based) upgraded to the 2.2 kernel, and one is a "fresh" install of RedHat 6.0 (glibc 2.1 based). I've noticed different behaviour from both of them and am looking for some feedback as to what the behaviours might mean. On the glibc 2.0 machine, green threads work great with both 1.1.7-v3 and 1.2-pre2. Native threads work ok, but performance is actually worse than with green threads, although, in either case I'm finding that 1.2-pre2 is appx 5x faster than 1.1.7-v3. (Also, I followed the instructions on the Gimp site for installing the URW fonts so the font errors that 1.2-pre2 reports would go away, and now I get no fonts at all with 1.2-pre2.) On the glibc2.1 machine, with both JDK 1.1.7-v3 and 1.2-pre2 and native threads, _all_ java apps freeze immediately upon initialization. In other words, I type, 'java appname' and essentially nothing happens except that the java interpreter loads from disk and loads the class files. When it tries to execute the app, it just sits there. Green threads with 1.1.7-v3 work ok, and green threads with 1.2-pre2 appear to work ok, but I have not done extensive testing other than trying to start up an app that just starts up a whole pile of threads all doing not very much. I've been using the only version of 1.1.7-v3 that I could find, which seems to indicate that it was compiled on a glibc2.0 machine, so I'm not surprised it doesn't work on the glibc2.1 machine using native threads, however, I am using the "correct" versions of the 1.2-pre2 for the libraries on the particular machines, which _does_ surprise me that it doesn't work on glibc2.1 machine. Now, on the glibc2.0 machine, where I _can_ get native threads to run, I'm noticing that with neither 1.1.7-v3 nor 1.2-pre2 does the JDK utilize more than a single processor. I thought that the idea of using native threads was to take advantage of as many processors as might be in the machine? Am I wrong, or is this a known issue with the Linux port, or is this something else entirely? I'm perfectly willing to test anything on either of these machines that anyone would like tested if they think they might be able to resolve any of these issues. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- With Microsoft products, failure is not Derek Glidden an option - it's a standard component. http://3dlinux.org/ Choose your life. Choose your http://www.tbcpc.org/ future. Choose Linux. http://www.illusionary.com/ ---------------------------------------------------------------------- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
