On Fri, 18 Jun 2004, Paul Dlug wrote: > I originally posed to my question to freebsd-java. My issue was that I > was unable to set a java heap size of more than approx 2000m using java > (-Xmx2000m), it would fail with the error "COuld not reserve enough > space for object heap. What do you have MAXDSIZ set to? You're running into the limits of 32 bit memory addressing, probably. FreeBSD reserves ~1.5GB of the 4GB address space for the kernel's use, and gives the rest to userland. You can adjust this boundary with the KVA_PAGES kernel compile option, but you have to do some mean tuning to avoid running out of KVM. I have nameservers set up this way, but named is the only thing running on the system. On 64 bit platforms (sparc64, amd64), the limit is far enough away that you won't encounter this specific problem. The command line in question is: # /usr/local/jdk1.4.2/bin/java -Xms256m -Xmx2024m -- Doug White | FreeBSD: The Power to Serve dwhite_at_gumbysoft.com | www.FreeBSD.orgReceived on Fri Jun 18 2004 - 15:38:21 UTC
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