From: "Jarkko Sakkinen" <jarkko@kernel.org>
To: "Jonathan McDowell" <noodles@earth.li>,
"Michal Suchánek" <msuchanek@suse.de>
Cc: <linux-integrity@vger.kernel.org>
Subject: Re: TPM operation times out (very rarely)
Date: Mon, 10 Feb 2025 19:30:01 +0200 [thread overview]
Message-ID: <D7OXZTO4LKTX.V4J1P9Q4OP0T@kernel.org> (raw)
In-Reply-To: <Z6olt1NHonKkamtM@earth.li>
On Mon Feb 10, 2025 at 6:13 PM EET, Jonathan McDowell wrote:
> FWIW bpftrace is great for this. I'm using the attached script as a
> basis for investigations. Obviously the timings it reports are the whole
> command rather than just the wait for status, but over a long period it
> can then show you the latency histogram. (Run it in one terminal, do TPM
> stuff elsewhere, hit Ctrl-C when you're done and it dumps the
> histogram.)
>
> J.
Yes, I used that to trace and spot issues with HMAC integrity protection
in the near past.
BR, Jarkko
next prev parent reply other threads:[~2025-02-10 17:30 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-29 15:27 TPM operation times out (very rarely) Michal Suchánek
2025-01-29 16:02 ` Jonathan McDowell
2025-01-29 16:20 ` Michal Suchánek
2025-01-29 17:14 ` Jonathan McDowell
2025-01-29 17:25 ` Michal Suchánek
2025-01-30 23:31 ` Jarkko Sakkinen
2025-01-31 8:35 ` Michal Suchánek
2025-01-31 10:25 ` Jarkko Sakkinen
2025-01-31 13:02 ` Michal Suchánek
2025-01-31 17:12 ` Jarkko Sakkinen
2025-01-31 17:28 ` Michal Suchánek
2025-01-31 19:31 ` Jarkko Sakkinen
2025-02-05 13:26 ` Michal Suchánek
2025-02-05 13:45 ` Michal Suchánek
2025-02-05 14:29 ` Jonathan McDowell
2025-02-05 15:29 ` Michal Suchánek
2025-02-06 20:35 ` Jarkko Sakkinen
2025-02-07 9:26 ` Jonathan McDowell
2025-02-07 9:40 ` Michal Suchánek
2025-02-07 9:47 ` Jonathan McDowell
2025-02-07 9:58 ` Michal Suchánek
2025-02-10 16:13 ` Jonathan McDowell
2025-02-10 17:30 ` Jarkko Sakkinen [this message]
2025-02-08 20:29 ` Jarkko Sakkinen
2025-02-10 16:18 ` Jonathan McDowell
2025-02-10 17:32 ` Jarkko Sakkinen
2025-02-24 13:04 ` Michal Suchánek
2025-03-01 2:13 ` Jarkko Sakkinen
2025-03-05 12:20 ` Michal Suchánek
2025-03-06 22:29 ` Jarkko Sakkinen
2025-03-27 12:57 ` Michal Suchánek
2025-03-27 13:15 ` Jarkko Sakkinen
2025-02-19 22:29 ` Jonathan McDowell
2025-02-20 8:42 ` Michal Suchánek
2025-02-21 12:44 ` Jonathan McDowell
2025-02-24 12:21 ` Michal Suchánek
2025-02-24 12:56 ` Michal Suchánek
2025-03-01 2:03 ` Jarkko Sakkinen
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