ViggoC

@tuapuikia According to the reference of Create [index API](https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-create-index.html), the index field is optional for both 6.x and 7.x version.

check your extension option, same "Gist Id" is required for data sync.

> sysstat uses systemd by default when available. systemd is the preferred way over crond to start sadc periodically, and as a consequence, crond is not needed for sysstat to...

@sysstat My release version is `Ubuntu 22.04.3 LTS`, for me the simplest way is running `sudo dpkg-reconfigure sysstat` and select yes.

@lxian This is the benchmark result when I set timeZone to "America/Los_Angeles". It takes a lot time to convert timestamp by timezone. The proportion of optimization is reduced. ``` ============================================================================...

@rui-mo Given your experience with optimizing timestamp calculations like https://github.com/facebookincubator/velox/pull/8385, may I have your time to review this PR?

Hi, @danepitkin I am really looking forward to this feature. Is this PR ready to be reviewed?

@danepitkin I can do that, but I have no idea how to add a new vector. Would you point me to some reading material, or just left some TODO comment...

@felipecrv thanks for your info.

@MaoZiming @codeDing18 I guess it's related to linux kernel version, the `flags` is introduced in 5.4 https://github.com/torvalds/linux/commit/77cd0d7b3f257fd0e3096b4fdcff1a7d38e99e10