Setting the TZ environment variable avoids thousands of system calls

• ClickHouse

  73 33,909 10.0 C++

  ClickHouse® is a free analytics DBMS for big data

  

  Syscalls can be heavier than expected. One example is when an application is run inside gVisor. Another example is when a lot of eBPF code is attached. A third example is when a program is run under strace.

  Disclaimer: I'm working on ClickHouse[1], and it is used by thousands of companies in unimaginable environments. It has to work in every possible condition... That's why we set the TZ variable at startup and also embed the timezones into the binary. And we don't use the glibc functions for timezone operations because they are astonishingly slow.

  https://github.com/ClickHouse/ClickHouse/

• icu

  4 2,476 9.7 C++

  The home of the ICU project source code.

  

  https://github.com/unicode-org/icu/pull/2213

  This affects all packages that have icu as a dependency, one of them being Node.js.

  https://github.com/nodejs/node/issues/37271

  I discovered this the hard way when some code malfunctioned shortly after daylight savings time kicked in.

• WorkOS

  workos.com

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  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• node

  174 103,479 9.9 JavaScript

  Node.js JavaScript runtime ✨🐢🚀✨

  

  https://github.com/unicode-org/icu/pull/2213

  This affects all packages that have icu as a dependency, one of them being Node.js.

  https://github.com/nodejs/node/issues/37271

  I discovered this the hard way when some code malfunctioned shortly after daylight savings time kicked in.

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