Since a couple of weeks now, FreeBSD 10.0-CURRENT is really unresponsive when managing high disk I/O.
This is most noticeable when starting the buildworld process, hwen clang 3.3 starts to build the llvm backend libraries and doing some sort of portmaster/portupgrade in parallel: even a "make rmconfig config" takes aprox. a minute to show up. Is there a known issue at this moment? I can not see such a behaviour on FreeBSD 9.1-STABLE (similar hardware). Oliver
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