linux-kernel - Re: [RFC PATCH 0/4] Gang scheduling in CFS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4EF9A3AD.8020806@redhat.com>
Date:	Tue, 27 Dec 2011 12:53:33 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Nikunj A Dadhania <nikunj@...ux.vnet.ibm.com>
CC:	Ingo Molnar <mingo@...e.hu>, peterz@...radead.org,
	linux-kernel@...r.kernel.org, vatsa@...ux.vnet.ibm.com,
	bharata@...ux.vnet.ibm.com
Subject: Re: [RFC PATCH 0/4] Gang scheduling in CFS

On 12/27/2011 12:43 PM, Nikunj A Dadhania wrote:
> > > > Interesting, are you overcommitting vcpus?
> > > > 
> > > Yes(1:2). On a 8cpu machine, have 2VMs running, which is 8vcpus each.
> > 
> > Ah, yield_on_hlt=0 isn't any good with overcommit.  The vcpu stays
> > scheduled when idle, so other vcpus don't get to use its cpu time.
> > 
> This is similar to booting the guest with idle=poll kernel parameter?

Yes, only with lower power consumption.

-- 
error compiling committee.c: too many arguments to function

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/