Re: Reduce timing overhead of EXPLAIN ANALYZE using rdtsc?

[Lukas Fittl]

On Sat, Apr 4, 2026 at 7:29 PM John Naylor <johncnaylo...@gmail.com> wrote:
> v18-0002 looks good to me as far as feature-detection, but aside from
> that there are plenty of domain-specific details that I lack the means
> to check on short notice. I did verify that OSXSAVE support is still
> functional.

Thanks for your input and reviews!

Attached v19 rebased over the instrument.c changes in 5a79e78501f4,
and also a slight adjustment to the commit message in 0001 to mention
the inverse pg_ns_to_ticks() function that was added for
INSTR_TIME_ADD_NANOSEC. No other changes.

Thanks,
Lukas

-- 
Lukas Fittl

v19-0004-pg_test_timing-Also-test-RDTSC-RDTSCP-timing-and.patch
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v19-0001-instrumentation-Streamline-ticks-to-nanosecond-c.patch
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v19-0005-instrumentation-ARM-support-for-fast-time-measur.patch
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v19-0003-instrumentation-Use-Time-Stamp-Counter-TSC-on-x8.patch
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v19-0002-Allow-retrieving-x86-TSC-frequency-flags-from-CP.patch
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