From: Charles Forsyth <charles.forsyth@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] imagereclaim()
Date: Sun, 2 Mar 2014 09:48:44 +0000 [thread overview]
Message-ID: <CAOw7k5jhcPyB+Ud9wQm-9K-6QWLp7B=RU2FhQGexw1NT-JSTEA@mail.gmail.com> (raw)
In-Reply-To: <122a1b862278abf61a07a806168993ac@felloff.net>
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On 2 March 2014 03:55, <cinap_lenrek@felloff.net> wrote:
> checked nix/port/page.c. your duppage() is wrong.
It isn't needed at all. When a cached page is written, it's trying hard to
replace the page in the cache by a new copy,
to return the previously cached page. Instead, I copy the cached page and
return the copy, which is what it already
does in another instance. In the current version, not yet available (but
soon), I do away with the page hash
table entirely, so there's nowhere for the page hash chains to accumulate.
Page is smaller and simpler, with
a reference count but no lock.
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next prev parent reply other threads:[~2014-03-02 9:48 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-01 21:46 cinap_lenrek
2014-03-01 21:55 ` erik quanstrom
2014-03-01 22:22 ` cinap_lenrek
2014-03-01 22:52 ` erik quanstrom
2014-03-01 23:05 ` cinap_lenrek
2014-03-01 23:11 ` erik quanstrom
2014-03-01 23:14 ` Charles Forsyth
2014-03-02 1:21 ` cinap_lenrek
2014-03-02 3:14 ` erik quanstrom
2014-03-02 3:55 ` cinap_lenrek
2014-03-02 4:05 ` erik quanstrom
2014-03-02 4:30 ` cinap_lenrek
2014-03-02 9:48 ` Charles Forsyth [this message]
2014-03-02 18:46 ` cinap_lenrek
2014-03-02 18:53 ` Charles Forsyth
2014-03-02 22:59 ` Anthony Martin
2014-03-03 1:00 ` erik quanstrom
2014-03-01 23:09 ` Charles Forsyth
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