>Interesting, I saw and helped debug a very similar sounding problem >with VxVM and VxFS on an E10k with 15TB of EMC storage and 10,000 NFS >shares years ago. This was on Solaris 2.6 so even though it was >UltraSPARC CPU there was still only a 32bit address space. > >Jeff Bonwick supplied the fixes for this, I don't remember the details >but it did help reduce the memory fragmentation. It does make me >wonder though if these fixes that were applicable to 32bit SPARC work >for 32bit x86.
Even the 32 bit UltraSPARC kernel had about 4GB of memory/VA available to it; on the 32bit x86 kernel, this is far less; only whatever is above the stack. (UltraSPARC has a different memory map for kernel/userland; this is different from many other CPUs which map the kernel in the same address space as the user processes). Casper _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
