id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
13922 Avoid a regression in the creation of homsets Simon King tbd "By #715 and related tickets, one observes a dramatic regression in the following example.
{{{
sage: p = polar_plot(lambda t: (100/(100+(t-pi/2)^8))*(2-sin(7*t)-cos(30*t)/2), -pi/4, 3*pi/2, color=""red"",plot_points=1000)
}}}
First of all, it is very strange that the following homset is created several thousands of times:
{{{
Set of Homomorphisms from Integer Ring to Real Interval Field with 64 bits of precision
}}}
This also occurs ''without'' #715. Hence, enabling garbage collection seems not to be to blame.
However, the ''creation time'' for the homsets increases clearly, which is shown by prun." defect closed critical sage-5.7 performance fixed Jean-Pierre Flori Paul Zimmermann Volker Braun Robert Bradshaw Nils Bruin Martin Albrecht Michael Orlitzky sage-5.7.beta3 Simon King Volker Braun N/A #715