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A recent post at http://jeffr-tech.livejournal.com/6268.html#cutid1 pointed to a possible Linux scalability problem when compared to FreeBSD. Setup 4 core PowerPC64 system Debian unstable (MySQL 5.0.32-Debian_7) Linux 2.6.21-rc3 Baseline A baseline was taken to verify this setup sees the same scalability issue: We see a problem when the number of benchmark threads exceeds the number of cores in th