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This queue is for tickets about the Proc-ProcessTable CPAN distribution.

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Id: 118641
Status: stalled
Priority: 0/
Queue: Proc-ProcessTable

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Owner: Nobody in particular
Requestors: jidanni [...] jidanni.org
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Subject: use uptime, not btime, else wrong start times on some systems
Date: Sun, 06 Nov 2016 08:44:42 +0800
To: bug-Proc-ProcessTable [...] rt.cpan.org
From: 積丹尼 Dan Jacobson <jidanni [...] jidanni.org>
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You guys are going about this all wrong. You should use uptime, not btime, else you will get wrong start times on some systems. See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=842879 .
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I've looked into the bug and it seems you are right. However, the comment of Craig Small worries me a little bit: Show quoted text
> Thats a big call to say it won't have a problem on any system. The problem > is lots of systems do dumb things to timers. So to change something like > that it will need to be tested a lot first. > > Things that suspend come to mind and systems that use stolen time are > another. > Ill try to find where btime was used and why. there may be a good reason > for it.
Given the system specs, the calculation is correct. That btime is not local to the VM, but to the underlying host should not be fixed in the downstream software (my opinion). For this conclusion I thought of a scenario where two different virtual server software packages exist, one using btime as time when the (underlying) host started, the other using uptime. Here I cannot decide which implementation is the correct one. Additionally, until I cannot foresee the effect of this change, I'll keep this bug on hold. One important factor will be the decision of the procps team. In any case, many thanks for submitting this bug. Joachim Am Sa 05. Nov 2016, 20:45:00, jidanni@jidanni.org schrieb: Show quoted text
> You guys are going about this all wrong. > You should use uptime, not btime, else you will get wrong start times > on some systems. > See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=842879 .


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