From: jay.aurabind@gmail.com (Jay Aurabind)
To: kernelnewbies@lists.kernelnewbies.org
Subject: large frame size warning when compiling
Date: Sat, 10 May 2014 12:13:13 +0530 [thread overview]
Message-ID: <536DCA81.9000303@gmail.com> (raw)
In-Reply-To: <17714.1399649426@turing-police.cc.vt.edu>
On Friday 09 May 2014 09:00 PM, Valdis.Kletnieks at vt.edu wrote:
> On Fri, 09 May 2014 17:39:21 +0530, Jay Aurabind said:
>
>> So shouldnt we assume that initial value (somewhere around 6K) should be
>> enough since the maximum it went down is only till its 50% mark ?
>
> Depends. Are you of the "we haven't seen it before, so it can't happen"
> school of programming, or the "it could plausibly happen, so we should
> guard against it" school?
>
> Consider you get down to that 6K mark - and now you hit that 1K allocation
> that you didn't bother cleaning up because "we've never seen it before". And
> then you hit a hardIRQ that *also* didn't bother cleaning up their 1K allocation
> that *that* kernel hacker "had never seen it before". What happens to your
> system? And how long is it going to take for you to figure out why every
> several weeks, your system dies with a totally different random memory
> overlay?
>
Point taken. Thank you Valdis, Martin, Paul and Frank for sharing your
thoughts.
Cheers,
Jay
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next prev parent reply other threads:[~2014-05-10 6:43 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-07 16:36 large frame size warning when compiling Jay Aurabind
2014-05-07 16:51 ` Valdis.Kletnieks at vt.edu
2014-05-08 3:54 ` Jay Aurabind
2014-05-08 15:46 ` Valdis.Kletnieks at vt.edu
2014-05-09 12:09 ` Jay Aurabind
2014-05-09 15:30 ` Valdis.Kletnieks at vt.edu
2014-05-10 6:43 ` Jay Aurabind [this message]
2014-05-09 15:56 ` Frank Ch. Eigler
2014-05-08 12:38 ` Martin Kepplinger
2014-05-09 12:13 ` Jay Aurabind
2014-05-09 12:36 ` Paul Davies C
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