I&#x27;d bought one of the first haswell notebooks to play around with tsx. Before I&#x27;d time to do so Intel found the tsx bug...<p>I hope to have time to play around with it one I have new hardware (I refuse to do performance development on virtual).<p>But honestly, most remaining performance&#x2F;scalability  problems in pg are more algorithmically caused. So micro optimization, and that&#x27;s what I&#x27;d call tax&#x2F;hle, aren&#x27;t likely to biggest bottleneck.