Ubuntu
tzdata package

  1. Bug #868395
  2. Comment #19

Comment 19 for bug 868395

Revision history for this message
In , Paul Eggert (eggert-cs) wrote :

This glibc performance bug came up recently on the tz mailing list; see the thread "[tz] localtime_r multiple times slower for Europe/Moscow timezone" starting here:

https://mm.icann.org/pipermail/tz/2023-January/032522.html

That thread stems from the following Ubuntu bug report:

https://bugs.launchpad.net/ubuntu/+source/tzdata/+bug/868395

Guy Harris diagnosed the problem as glibc not properly caching the expansion of the TZ string at the end of the TZif file. See:

https://mm.icann.org/pipermail/tz/2023-January/032529.html

This problem has grown in importance as many jurisdictions are now like Moscow, as they formerly had daylight saving but now no longer do. So this performance bug is more important now than it was years ago.