<div dir="ltr">On Tue, Feb 9, 2016 at 11:20 AM, Karel Gardas <span dir="ltr"><<a href="mailto:karel.gardas@centrum.cz" target="_blank">karel.gardas@centrum.cz</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 01/28/16 11:34 PM, Ben Gamari wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Joachim Breitner <<a href="mailto:mail@joachim-breitner.de" target="_blank">mail@joachim-breitner.de</a>> writes:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Oleg,<br>
<br>
Am Freitag, den 29.01.2016, 00:22 +0200 schrieb Oleg Grenrus:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Is the same compiler used to build HEAD and 7.10,1?<br>
</blockquote>
<br>
Good call. In fact, no: 7.10.1 is built with 7.6.3, while HEAD is built<br>
with 7.10.3.<br>
<br>
Anthony’s link, i.e.<br>
<a href="https://perf.haskell.org/ghc/#compare/ca00def1d7093d6b5b2a937ddfc8a01c152038eb/a496f82d5684f3025a60877600e82f0b29736e85" rel="noreferrer" target="_blank">https://perf.haskell.org/ghc/#compare/ca00def1d7093d6b5b2a937ddfc8a01c152038eb/a496f82d5684f3025a60877600e82f0b29736e85</a><br>
has links to the build logs of either build; there I could find that information.<br>
<br>
That might be (part) of the problem. But if it is, it is even worse, as<br>
it would mean not only building the compiler got slower, but the<br>
compiler itself...<br>
<br>
</blockquote>
I can verify that the build itself is indeed slower. Validating the<br>
current state of ghc-7.10 takes 19 minutes, whereas ghc-8.0 takes 25.5<br>
minutes. This isn't entirely unexpected but the change is quite a bit<br>
larger than I had thought. It would be nice to know which commits are<br>
responsible.<br>
</blockquote>
<br></span>
btw, just recent experience on ARM64 (X-gene board):<br>
<br>
bootstrapping 7.10.1 with 7.6.x took: ~120 minutes<br>
bootstrapping 8.0.1 RC2 with 7.10.1 took: ~446 minutes<br>
<br>
both run as: ./configure; time make -j8<br></blockquote><div><br></div><div>It would be interesting to have the time for bootstrapping 7.10.1 with 7.10.1 too, for comparison.<br><br></div><div>Regards,<br></div><div>Reid Barton <br></div></div></div></div>