From: erik quanstrom <quanstro@labs.coraid.com>
To: 9fans@9fans.net
Subject: Re: [9fans] 9front pegs CPU on VMware
Date: Mon, 16 Dec 2013 11:59:43 -0500 [thread overview]
Message-ID: <22d1fd07584a83ec05006ffe30fb324c@coraid.com> (raw)
In-Reply-To: <6B099879-E6A7-4362-AECC-AFDF1D29F276@gmail.com>
> > it won't be "too late"—as causing failures. i've tried testing this and
> > generally found that reduced contention on the dog pile lock means
> > unconditionally halting gives a performance boost.
> >
> > - erik
> >
>
> What are the changes you made to 9atom to facilitate this? Just replacing the if/else with a halt?
no other changes needed. if there are, then one would suspect there is
code depending on timing that is accidental, and not guarenteed.
the current 9atom version is somewhat compromised:
if(m->machno != 0)
halt();
i don't recall any reason for this other than some long-forgotten experiments.
- erik
next prev parent reply other threads:[~2013-12-16 16:59 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-16 1:49 Blake McBride
2013-12-16 1:52 ` erik quanstrom
2013-12-16 2:35 ` Blake McBride
2013-12-16 2:58 ` andrey mirtchovski
2013-12-16 3:05 ` Blake McBride
2013-12-16 10:17 ` cinap_lenrek
2013-12-16 14:57 ` Blake McBride
2013-12-16 15:34 ` erik quanstrom
2013-12-16 16:25 ` Matthew Veety
2013-12-16 16:59 ` erik quanstrom [this message]
2013-12-17 11:00 ` cinap_lenrek
2013-12-17 13:38 ` erik quanstrom
2013-12-17 14:14 ` erik quanstrom
2013-12-19 9:01 ` Gorka Guardiola Muzquiz
2013-12-19 14:16 ` Gorka Guardiola
2013-12-19 15:19 ` erik quanstrom
2013-12-19 15:57 ` Gorka Guardiola
2013-12-19 16:15 ` erik quanstrom
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