From: forsyth@caldo.demon.co.uk
To: 9fans@cse.psu.edu
Subject: Re: [9fans] EROS, Vapour
Date: Fri, 31 Aug 2001 09:53:59 +0100 [thread overview]
Message-ID: <20010831085903.C1F5E19A74@mail.cse.psu.edu> (raw)
mode, all synchronizing via cheap test&set processor instructions, whereas
in Plan9/etc. an expensive switch to kernel mode is required, making
heavily parallel things unpractical (the cost of mutexes becomes higher
than the gain of parallelism).
i don't know about the `etc.' but in Plan 9, at least, if your application could
manage with only test and set processor instructions on Vapour it
would manage on Plan 9, using ... errr... test and set instructions
at user mode.
next reply other threads:[~2001-08-31 8:53 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-31 8:53 forsyth [this message]
2001-08-31 10:52 ` [9fans] Anybody runs kaffe? pac
-- strict thread matches above, loose matches on Subject: below --
2001-08-31 18:13 [9fans] EROS, Vapour David Gordon Hogan
2001-08-30 18:19 David Gordon Hogan
2001-08-29 9:04 Eyal Lotem
2001-08-29 13:40 ` Rick Hohensee
2001-08-29 14:42 ` Ronald G Minnich
2001-08-29 15:48 ` Boyd Roberts
2001-08-31 8:45 ` Eyal Lotem
2001-09-03 8:39 ` Douglas A. Gwyn
2001-09-03 17:17 ` Ronald G Minnich
2001-08-29 14:37 ` Ronald G Minnich
2001-08-29 15:46 ` Boyd Roberts
2001-08-29 15:52 ` Boyd Roberts
2001-08-30 15:58 ` Douglas A. Gwyn
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