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Brian Behlendorf
3336e29cc2
One of the most common things you want to know when looking at the slab is how much memory is being used. This information was available in /proc/spl/kmem/slab but only on a per-slab basis. This commit adds the following /proc/sys/kernel/spl/kmem/slab* entries to make total slab usage easily available at a glance. slab_kmem_total - Total kmem slab size slab_kmem_avail - Alloc'd kmem slab size slab_kmem_max - Max observed kmem slab size slab_vmem_total - Total vmem slab size slab_vmem_avail - Alloc'd vmem slab size slab_vmem_max - Max observed vmem slab size NOTE: The slab_*_max values are expected to over report because they show maximum values since boot, not current values.
The Solaris Porting Layer (SPL) is a Linux kernel module which provides many of the Solaris kernel APIs. This shim layer makes it possible to run Solaris kernel code in the Linux kernel with relatively minimal modification. This can be particularly useful when you want to track upstream Solaris development closely and don’t want the overhead of maintaining a large patch which converts Solaris primitives to Linux primitives.
To build packages for your distribution:
$ ./configure
$ make pkg
Full documentation for building, configuring, and using the SPL can be found at: http://zfsonlinux.org