Unless you're going to kexec a kernel for debugging, the crashkernel= parameter does no good. In fact, in your case it consumes a fair chunk of memory. Try rerunning your load after editing /etc/defaults/grub, remove crashkernel, running update-grub, and rebooting. It'll give your NFS load a bit more memory headroom.
Unless you're going to kexec a kernel for debugging, the crashkernel= parameter does no good. In fact, in your case it consumes a fair chunk of memory. Try rerunning your load after editing /etc/defaults/grub, remove crashkernel, running update-grub, and rebooting. It'll give your NFS load a bit more memory headroom.