This is a slight change from the current model where we purposely make
the client very dumb, and make the decision on the server (to minimize
the possibility of client-side bug making updates impossible). However,
this doesn't seem like a case where we could get somebody stuck very
easily, and I don't see a practical way of making the decision on the
server if it requires this much information.
On 2016-05-12 01:07 PM, Ted Mielczarek wrote:
I suspect we'd want to add some extra token like "it's ok to update this
32-bit build to a 64-bit build", and have all the gating logic live on
the client-side. Odds are if we want to change the criteria we'd have to
change the client anyway.
-Ted
On Thu, May 12, 2016, at 12:56 PM, Ben Hearsum wrote:
Do you have thoughts on how we'll be able to serve the users the correct
build if we have to base the decision on plugins they may have or other
information that's not in the update ping? We can already detect 32-bit
builds on 64-bit Windows through the build target, but information about
plugins or RAM is not something we know about when serving updates.
On 2016-05-12 11:45 AM, Ted Mielczarek wrote:
Hello,
Given all the discussion around SSE[2] lately, I was curious as to
whether we had made any plans to update Windows users that are running
32-bit Windows builds on a 64-bit Windows OS to our 64-bit Windows
builds. The 64-bit Windows builds do use SSE2, since that's a baseline
requirement for x86-64 processors, and the overall performance should
generally be better (modulo memory usage, I'm not sure if we have an
exact comparison). Additionally 64-bit builds are much less likely to
encounter OOM crashes due to address space fragmentation since they have
a very large address space compared to the maximum 4GB available to the
32-bit builds.
It does seem like we'd need some minimal checking here, obviously first
for whether the user is running 64-bit Windows, but also possibly
whether they use 32-bit plugins (until such time as we unsupport NPAPI).
32-bit plugins will not work on a 64-bit Windows Firefox (we do not have
the equivalent of Universal binaries like we do on OS X).
-Ted
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