On Jan 28 15:33, Ken Brown via Cygwin-patches wrote: > On 1/28/2021 11:07 AM, Corinna Vinschen via Cygwin-patches wrote: > > One problem is that there are some applications in the wild which run > > loops up to either sysconf(_SC_OPEN_MAX) or OPEN_MAX to handle open > > descriptors. tcsh is one of them. It may slow done tcsh quite a bit > > if the loop runs to 3200 now every time. > > I don't use tcsh. Is it easy to test this?
I just checked the source. In the olden days, before the invention of close-on-exec, tcsh closed all descriptors > 2 up to OPEN_MAX prior to starting any executable. With close-on-exec this happens only at startup and after an error occured. So testing should be easy: The tcsh startup may be noticably slower. Corinna
