Leif Hedstrom created TS-1775:
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Summary: Cleanup of ink_hrtime.{cc,h}
Key: TS-1775
URL: https://issues.apache.org/jira/browse/TS-1775
Project: Traffic Server
Issue Type: Improvement
Reporter: Leif Hedstrom
A few things comes to mind:
1) Why do we have a NEED_HRTIME define? It's always on as far as I can tell,
and I can't imagine there's a reason to not have it on (it'd completely break
like everything, in fact it would fail to compile since gethrtime() doesn't
exist?).
2) We should eliminate the USE_TIME_STAMP_COUNTER_HRTIME define, and the code
that implements our own TSC code. Modern Unix flavors implements this already
in various way (e.g. glibc's gettimeofday() wrapper has a TSC user space
implementation).
3) On FreeBSD, jpeach points out that CLOCK_REALTIME is probably not the
optimal way to use clock_gettime(). He suggest using CLOCK_REALTIME_FAST or
CLOCK_MONOTONIC_FAST which is similar to the optimizations done with TSC for
gettimeofday() on linux.
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