New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Performance issue with data frames with non-double columns #176

Enchufa2 opened this Issue Nov 15, 2018 · 0 comments


None yet
1 participant
Copy link

Enchufa2 commented Nov 15, 2018

Reported here. With the script attached,

$ perf record -F 99 Rscript test.R
$ perf report
Samples: 4K of event 'cycles:uppp', Event count (approx.): 149446301773
Overhead  Command  Shared Object        Symbol
  62,42%  R              [.] Rf_coerceVector
   7,66%  R              [.] 0x0000000000174cb8
   3,35%  R         [.] __memcmp_avx2_movbe

The call to Rf_coerceVector kills the performance.

@Enchufa2 Enchufa2 closed this in ade69a2 Nov 19, 2018

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment