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by peterwwillis 3401 days ago
Yeah, this is a perfect example of micro-optimization being unnecessary. Not only will you not see performance issues from this in the real world, it might cause problems down the road, because since it isn't set by default this way, some apps may not expect it and behave erroneously.

But it's neat information to have in the back of your head.
2 comments
ishtu 3401 days ago
Unnecessary? I had a really bad experience with ancient skype version on modern Ubuntu desktop, and the fix for this was to set TZ environment variable to speedup first login/history fetch. Skype process was spending so much time doing useless work it was noticeable.
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__jal 3401 days ago
That's just not possible to authoritatively state. The best you can do is "this shouldn't normally cause a noticeable impact on most systems".

As just one example, what you're stat()ing over NFS with a busy, flaky and/or distant server? A bit of thought and you'll come up with a bunch of other times it suddenly starts to matter.

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