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Removed CLOCK_MONOTONIC_COARSE support. While clock_gettime(CLOCK_MONOTONIC_COARSE) is faster than clock_gettime(CLOCK_MONOTONIC), the latter is fast enough on Linux for practical usage, and the difference is negligible compared to other costs at each event loop iteration. On the other hand, CLOCK_MONOTONIC_COARSE causes various issues with typical CONFIG_HZ=250, notably very inaccurate limit_rate handling in some edge cases (ticket #1678) and negative difference between $request_time and $upstream_response_time (ticket #1965).
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 21 Oct 2021 18:38:38 +0300
parents 551102312e19
children
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<!ELEMENT configuration   (length, start, indent, changes+) >

<!ELEMENT length          (#PCDATA) >
<!ELEMENT start           (#PCDATA) >
<!ELEMENT indent          (#PCDATA) >

<!ELEMENT changes         (title, length,
                           bugfix, feature, change, workaround,
                           (month, month, month, month, month, month,
                            month, month, month, month, month, month)?) >

<!ATTLIST changes         lang ( ru | en) #REQUIRED>

<!ELEMENT title           (#PCDATA) >

<!ELEMENT bugfix          (#PCDATA) >
<!ELEMENT feature         (#PCDATA) >
<!ELEMENT change          (#PCDATA) >
<!ELEMENT workaround      (#PCDATA) >

<!ELEMENT month           (#PCDATA) >