Libumem

Libumem is a library used to detect memory management bugs in applications. It is based on the Slab allocator concept. Libumem is available as a standard part of Solaris from Solaris 9 Update 3 onwards.

Functions

Functions in this library provide fast, scalable object-caching memory allocation with multithreaded application support. In addition to the standard malloc(3C) family of functions and the more flexible umem_alloc(3MALLOC) family, libumem provides powerful object-caching services as described in umem_cache_create(3MALLOC).^[1]

Getting started with libumem is easy; just set LD_PRELOAD to "libumem.so" and any program executed will use libumem's malloc(3C) and free(3C) (or new and delete). ^[2] This slab allocator is designed for systems with many threads and many CPUs. Memory allocation with naive allocators can be a serious bottleneck.

Sources

Portable Umem: An opensource effort to port libumem to other UNIX-like systems

Solaris

Technologies	Direct binding Doors DTrace IPMP Jumpstart mdb MPxIO SMF snoop Containers Crossbow Cluster Trusted Extensions ZFS

illumos/OpenSolaris	BeleniX Nexenta OS OpenIndiana OpenSolaris for System z SchilliX

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