<br><br>
<div class="gmail_quote">On Tue, Mar 3, 2009 at 5:31 PM, <span dir="ltr"><<a href="mailto:mwinter@brocku.ca">mwinter@brocku.ca</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">In both runs the same computations are done (sequentially resp.<br>parallel), so the gc should be the same. But still using 2 cores is<br>
much slower than using 1 core (same program - no communication).</blockquote>
<div> </div>
<div>Might there not be contention in the allocator/GC that's worsened by having two threads?</div>
<div>What happens with -O2?<br>-- <br>Sebastian Sylvan<br>+44(0)7857-300802<br>UIN: 44640862<br></div></div>