Date: Sun, 3 Feb 2013 10:52:50 +0400 From: Chagin Dmitry <chagin.dmitry@gmail.com> To: Alexander Leidinger <netchild@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r235063 - in head/sys: amd64/linux32 compat/linux i386/linux Message-ID: <20130203065250.GA1369@dchagin.static.corbina.net> In-Reply-To: <201205051942.q45Jgd3P071990@svn.freebsd.org> References: <201205051942.q45Jgd3P071990@svn.freebsd.org>
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--C7zPtVaVf+AK4Oqc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, May 05, 2012 at 07:42:39PM +0000, Alexander Leidinger wrote: > Author: netchild > Date: Sat May 5 19:42:38 2012 > New Revision: 235063 > URL: http://svn.freebsd.org/changeset/base/235063 >=20 > Log: > - >500 static DTrace probes for the linuxulator > - DTrace scripts to check for errors, performance, ... > they serve mostly as examples of what you can do with the static prob= e;s > with moderate load the scripts may be overwhelmed, excessive lock-tra= cing > may influence program behavior (see the last design decission) > =20 > Design decissions: > - use "linuxulator" as the provider for the native bitsize; add the > bitsize for the non-native emulation (e.g. "linuxuator32" on amd64) > - Add probes only for locks which are acquired in one function and rel= eased > in another function. Locks which are aquired and released in the same > function should be easy to pair in the code, inter-function > locking is more easy to verify in DTrace. > - Probes for locks should be fired after locking and before releasing = to > prevent races (to provide data/function stability in DTrace, see the > man-page of "dtrace -v ..." and the corresponding DTrace docs). Hi, what about to merge this to 9, 8?=20 >=20 --C7zPtVaVf+AK4Oqc Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlEOCUIACgkQ0t2Tb3OO/O28ogCgpKm1kkRTC87x27sbE15P7qnh ZAkAnjCLc6gDwJXN0lQ+mgK4o/8qA2Ec =VO0u -----END PGP SIGNATURE----- --C7zPtVaVf+AK4Oqc--
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