Logical Domains (LDoms) provides built-in virtualization capabilities for Sun Chip Multithreading (CMT) Servers at no cost. The latest free release of LDoms is version 1.3, which now features CPU dynamic resource management (DRM), domain mobility performances improvement, crypto unit dynamic reconfiguration and migration support, link-based IPMP for virtual network, large virtual disk (>1TB) boot support, and more.
Terry Gardner reports that a Sun Netra x4250, dual-CPU, 8-core (2.13 Ghz), 64 GB RAM running Solaris 10 update 7 using internal disk drives and a Gigabit Ethernet accommodated 13,800,000 entries loaded into the Directory Server database in 2 hours; sustained 17,000 searches per second over 8 hours with an average latency of less than 2 milliseconds with no update (replication) traffic; and sustained 11,000 searches per second sustained over 8 hours with average latency of than 2 milliseconds in the presence of update (replication) traffic.
Sun and Belgacom engineers collaborated on a proof-of-concept environment to show how to effectively and efficiently cool carrier-grade servers, namely Sun Netra servers, using only ambient air. Erik Vanden Meersch and Ravi Sanjeev with Sun, along with Johan Vanderhaegen of Belgacom, reveal their discoveries in a Sun BluePrints Online article "Conserving Energy and Increasing ROI with Sun Netra Servers and Full Free Air Cooling."
The recent SPECpower_ssj2008 benchmark figures that reported outcomes of three identical Sun Netra X4250 Servers running the same software stacks but with different results are interpreted in a blog by Christopher Boire of Sun's Strategic Applications Engineering group.
Logical Domains (LDoms) provides built-in virtualization capabilities for Sun's CoolThreads Servers. Recently released Version 2.1 provides support for:
CPU power management
jumbo frames
configuring domain dependencies
autorecovery of configurations
export of same backend multiple times
physical-to-virtual migration tool and
configuration assistant tools.
Other features and multiple bug fixes also have been implemented. LDoms 1.2 software is supported on the OpenSolaris 2009.06 release, Solaris 10 05/09 and earlier Solaris 10 patched versions.
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