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From: "Michał Górny" <mgorny@gentoo.org>
To: gentoo-dev@lists.gentoo.org
Cc: vivo75@gmail.com
Subject: Re: [gentoo-dev] Six month major project on Gentoo
Date: Thu, 22 Dec 2011 16:55:18 +0100	[thread overview]
Message-ID: <20111222165518.6cd251d9@pomiocik.lan> (raw)
In-Reply-To: <CAD6zcDwnexHze1S0uAnBCxVV6quh_JvU+pRAvtxefagyUHzKnQ@mail.gmail.com>

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On Thu, 22 Dec 2011 12:11:32 +0100
Francesco Riosa <vivo75@gmail.com> wrote:

> > I tried messing around with this with Amazon EC2.  The problem was
> > that due to latency I only really saw the benefit for VERY high
> > levels of parallelization (think -j25+)..  However, make isn't
> > actually "distcc-aware" so it just runs 25 jobs of anything in
> > parallel.  So, anytime a makefile launched a ton of java or python
> > jobs the host ground to a halt as it wasn't distributed and it was
> > way more than the host could handle (especially java - which
> > swapped like there was no tomorrow).
> 
> Just wanted to point out that (if there is enough memory) recent
> kernels manage much better parallelism, even excess of it, once
> reached the maximum load augmenting threads only bring minimal loss of
> "real" time.

Does that include handling complete lack of memory and heavy swapping?

-- 
Best regards,
Michał Górny

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  reply	other threads:[~2011-12-22 15:55 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-14 11:06 [gentoo-dev] Six month major project on Gentoo Gaurav Saxena
2011-12-14 18:05 ` Christian Ruppert
2011-12-14 18:14   ` "C. Bergström"
2011-12-15 18:07   ` Gaurav Saxena
2011-12-19 17:46     ` Christian Ruppert
2011-12-14 18:29 ` Alec Warner
2011-12-15 18:09   ` Gaurav Saxena
2011-12-22  4:43   ` Donnie Berkholz
2011-12-22 10:52     ` Rich Freeman
2011-12-22 11:11       ` Francesco Riosa
2011-12-22 15:55         ` Michał Górny [this message]
2011-12-22 16:09           ` Rich Freeman
2011-12-22 17:40             ` [gentoo-dev] " Duncan
2011-12-18 17:02 ` [gentoo-dev] " Petteri Räty
2011-12-18 17:13   ` "Paweł Hajdan, Jr."
2011-12-18 17:17     ` [gentoo-dev] libbash licensing Petteri Räty
2011-12-18 17:45     ` [gentoo-dev] Six month major project on Gentoo Michał Górny
2011-12-19 18:14 ` Sébastien Fabbro
2012-01-02 14:33   ` "Paweł Hajdan, Jr."
     [not found] <i7USJ-40Q-3@gated-at.bofh.it>
2011-12-14 21:25 ` Leho Kraav
2011-12-14 23:43   ` Alec Warner
2011-12-14 23:58     ` Mike Frysinger
2011-12-15  5:39       ` Nirbheek Chauhan
2011-12-15 12:27         ` Mike Frysinger
2011-12-15 12:42           ` Nirbheek Chauhan
2011-12-15 12:43         ` Rich Freeman
2011-12-15 16:30           ` Mike Frysinger
2011-12-15 16:51             ` Mike Frysinger

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