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devel / comp.unix.programmer / Re: Timestamp Counter Frequency under Linux

SubjectAuthor
* Timestamp Counter Frequency under LinuxBonita Montero
+* Timestamp Counter Frequency under LinuxScott Lurndal
|`- Timestamp Counter Frequency under LinuxBonita Montero
`- Timestamp Counter Frequency under LinuxRalf Fassel

1
Timestamp Counter Frequency under Linux

<tqrm70$o7ob$1@dont-email.me>

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From: Bonita.M...@gmail.com (Bonita Montero)
Newsgroups: comp.unix.programmer
Subject: Timestamp Counter Frequency under Linux
Date: Wed, 25 Jan 2023 17:44:07 +0100
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 by: Bonita Montero - Wed, 25 Jan 2023 16:44 UTC

Is there a fixed point in the /proc or /sys filesystem where I can
get the frequency of the x86 timestamp counter ?

Re: Timestamp Counter Frequency under Linux

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 by: Scott Lurndal - Wed, 25 Jan 2023 16:58 UTC

Bonita Montero <Bonita.Montero@gmail.com> writes:
>Is there a fixed point in the /proc or /sys filesystem where I can
>get the frequency of the x86 timestamp counter ?

Searching google would be quicker than waiting for someone
find it for you.

https://stackoverflow.com/questions/24392392/getting-tsc-frequency-from-proc-cpuinfo

Re: Timestamp Counter Frequency under Linux

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From: Bonita.M...@gmail.com (Bonita Montero)
Newsgroups: comp.unix.programmer
Subject: Re: Timestamp Counter Frequency under Linux
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 by: Bonita Montero - Wed, 25 Jan 2023 17:14 UTC

Am 25.01.2023 um 17:58 schrieb Scott Lurndal:

> Bonita Montero <Bonita.Montero@gmail.com> writes:

>> Is there a fixed point in the /proc or /sys filesystem where I can
>> get the frequency of the x86 timestamp counter ?

> Searching google would be quicker than waiting for someone
> find it for you.
> https://stackoverflow.com/questions/24392392/getting-tsc-frequency-from-proc-cpuinfo

I already read that posting but no one gave a proper answer there.

Re: Timestamp Counter Frequency under Linux

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From: ralf...@gmx.de (Ralf Fassel)
Newsgroups: comp.unix.programmer
Subject: Re: Timestamp Counter Frequency under Linux
Date: Thu, 26 Jan 2023 17:29:21 +0100
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 by: Ralf Fassel - Thu, 26 Jan 2023 16:29 UTC

* Bonita Montero <Bonita.Montero@gmail.com>
| Is there a fixed point in the /proc or /sys filesystem where I can
| get the frequency of the x86 timestamp counter ?

https://blog.trailofbits.com/2019/10/03/tsc-frequency-for-all-better-profiling-and-benchmarking/
https://github.com/trailofbits/tsc_freq_khz

No idea how good/bad this is...
R'

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