bisect is log(n)...
On Tuesday, 30 June 2015 19:36:03 UTC-3, Seth wrote: > > I can't tell what changed to cause this. The versions are 35 days apart. > > On Tuesday, June 30, 2015 at 5:10:52 PM UTC-5, Kristoffer Carlsson wrote: >> >> If it is a specific commit that introduced the regression it should go >> fairly quick to git bisect it down. Maybe you can try that? >> >> On Tuesday, June 30, 2015 at 11:07:35 PM UTC+2, Seth wrote: >>> >>> Please replace "vertex" with "edge" below. Sorry about that. >>> >>> On Tuesday, June 30, 2015 at 4:03:15 PM UTC-5, Seth wrote: >>>> >>>> I'm seeing a fairly significant performance regression between Julia >>>> Version 0.4.0-dev+5008 and Julia Version 0.4.0-dev+5712 ,and I don't >>>> know how to go about identifying what's wrong. >>>> >>>> I'm timing betweenness_centrality in LightGraphs.jl. It used to be >>>> among the fastest implementations out there, but it's slipping. >>>> >>>> Here are some samples: >>>> >>>> for a 5k-node, 50k-vertex graph: >>>> >>>> 5008: 12.581 seconds (75506 k allocations: 5047 MB, 5.26% gc time) >>>> 5712: 19.291 seconds (75507 k allocations: 5047 MB) >>>> >>>> for a 10k-node, 100k-vertex graph: >>>> >>>> 5008: 91.238 seconds (380 M allocations: 27234 MB, 6.21% gc time) >>>> 5712: 100.042 seconds (380 M allocations: 27235 MB, 5.97% gc time) >>>> >>>> for the benchmark (a 39796-node, 301498-edge graph: >>>> >>>> 5008: 1238 seconds (3769 M allocations: 272 GB, 18.38% gc time) >>>> 5712: 1515 seconds (3769 M allocations: 272 GB, 16.63% gc time) >>>> >>>> Any ideas on how to figure out what's going on here? Profile shows the >>>> same lines in the same order (though for some reason 5712 is showing a lot >>>> more internal profiling). >>>> >>>
