Sophie: pdns-3.0.1-0.1mdv2010.2 i586

pdns-3.0.1-0.1mdv2010.2.i586.rpm

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>9.2. Native Posix Thread Library vs LinuxThreads</A
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>	To get the best performance under Linux, especially on SMP
	systems, the use of NPTL is advised. The difference in
	performance can be over a factor of ten in some circumstances.
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>	NPTL is the default library on modern Linux distributions, so
	there is generally not a problem, except if you use a
	statically compiled version that, for portability reasons,
	defaults to LinuxThreads. This includes all .deb's and .rpm's
	provided by us up to and including 2.9.18.
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>	When running a PowerDNS-provided static binary of 2.9.18 or
	lower, it may make sense to recompile, or to upgrade to a
	newer version, if available. When recompiling, be sure to use
	a supported compiler, like g++ &gt;3.2. You might also consider
	moving to a distribution supplied version.
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>	A good indication that your installation might benefit from
	such an upgrade is to watch the 'cs' count in the output of
	vmstat 1. If this is very high (&gt; 10000), you are suffering
	from a LinuxThreads performance problem called 'overspin'.
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>	Thanks are due to L. Bunt Jackson who noted the static
	compilation problem in an article in Dr. Dobb's Journal.
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