Comments (1)
tobz
commented on June 18, 2024
1
We currently depend on std::arch for stable access to rdtsc on x86 platforms. Adding support to read the Performance Monitor Counters on ARM would require us to drop back down to raw asm! calls, and thus nightly. quanta would still fall back to the OS time facilities if a high-speed mode wasn't possible, though.
I personally don't know the performance of OS time facilities on Linux or macOS ARM, so it's hard for me to gauge the value of adding a nightly-only feature when the performance differences might be small. I'm happy to accept a PR for this support if it's important to you.
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Related Issues (20)
- Failed to build version 0.9.1 HOT 1
- Does not build on MIPS and ARMv5 HOT 7
- Check for RDTSCP support doesn't work HOT 2
- Switch to CLOCK_BOOTTIME and friends to improve accuracy. HOT 2
- Intermittent panic due to overflowing our source calibration denominator. HOT 5
- Comparing to `minstant` HOT 9
- Can `Instant`s be `NonZeroU64`? HOT 4
- Adding support for TSC on ARM. HOT 4
- Fails to build on x86 without SSE2 HOT 2
- Allow Instant to be used atomically HOT 3
- Quanta Clock is off by a factor of 1000 in web browsers
- RUSTSEC-2020-0168: mach is unmaintained HOT 2
- Much slower than std version in case of high contention HOT 2
- Can Clock provide `delta_as_nanos`? HOT 7
- Does it make sense to pin `Upkeep` thread? HOT 4
- Populate recent time once before starting upkeep thread.
- On macOS arm64, `quanta::Instant::elapsed` method tends to return a shorter duration than `std::time::Instant::elapsed` does HOT 6
- Drift from system time HOT 1
- Crash on iOS HOT 7
- Commit for version 0.12.3 it not reachable from main branch HOT 1
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from quanta.