From time to time I see some solaris server using a lot of memory "just" for the kernel. You could take a deeper look to see where the kernel memory is used: root@server:~# mdb -k Loading modules: [ unix genunix specfs dtrace zfs scsi_vhci sd mpt_sas mac px…

Solaris provides different memory page sizes, on SPARC up to 16gb. It does not always make sense to use 16gb also known as huge page sizes. The Oracle database chooses the size depending on their needs: root@server:/# pagesize…

Always a strange situation when ZFS shows you a full filesystem and you know that there should be enough free space. One reason could be a big file you did not think about. I wrote a small script to find the biggest file on a ZFS, you can find my…