From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Jackson Date: Wed, 30 Jun 2004 12:26:49 +0000 Subject: Re: How to notify app of changed cpu/mem/io node configuration? Message-Id: <20040630052649.0b1e98e1.pj@sgi.com> List-Id: References: <20040628173808.04718b83.pj@sgi.com> In-Reply-To: <20040628173808.04718b83.pj@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-hotplug@vger.kernel.org jlm_devel writes: > nothing prevent then to create a script that do Yes - I quite agree: 1) However it be that notice is given, a hotplug script can send it, in the case that the kernel first saw the event. I was less focused on how the notice was sent, than I was with what form (signal, message, ...) the notice took when it arrived into the process context of the long running job needing to be moved. 2) I too prefer signals over DBUS for the particular case I was trying to raise here, of delivering low bandwidth asynchronous notice to a long running application that it needed to run a little bit of specialized "memory placement" code within its process context. Note that it's not always the kernel that first notices the event. It might also be a batch manager that decides it needs to move some long running jobs around, to make room for additional work. In such case, the batch manager, not a hotplug script, would be sending the notice. I would not go so far as to describe D-BUS as reinventing the signal wheel. These are two different mechanisms, useful for different needs. If anything, D-BUS reinvents the CORBA wheel, which some would say was pregnant with opportunities for reinvention. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson 1.650.933.1373 ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel