pan-users
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Pan-users] 64 bits fails as solution to large binary groups


From: Ron Johnson
Subject: Re: [Pan-users] 64 bits fails as solution to large binary groups
Date: Mon, 10 Oct 2011 23:41:54 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23) Gecko/20110922 Mnenhy/0.8.4 Thunderbird/3.1.15

On 10/10/2011 10:41 PM, Duncan wrote:
Ron Johnson posted on Mon, 10 Oct 2011 08:00:56 -0500 as excerpted:

On 10/10/2011 04:55 AM, Duncan wrote:
Ron Johnson posted on Sun, 09 Oct 2011 22:15:24 -0500 as excerpted:

It's a fact that 32-bit Pan runs out of *process* address space at
around 2GB.  64-bit Pan doesn't technically have that problem, but
effectively it does, although it does for all practical intents.

Well, the 32-bit part isn't quite accurate, or at least it's accurate
for only a subset of 32-bit.

It's completely accurate for the set of people who use pre-built Debian
and Ubuntu kernels.

You mean they don't have a 32-bit "enterprise kernel" or perhaps a
"enterprise/database kernel" or similar, with the 4G/4G userspace/
kernelspace option enabled?  Given that database-server targets have
been, by my reading, the primary use of such a config, I'd have expected
they'd have at least one such kernel option available.

[snip]
But perhaps it is accepted that such "advanced server usage" requires a
reasonably good sysadmin, where "reasonably good sysadmin" is defined in
part as having (or at minimum, knowing where/how to get) the knowledge to
properly reconfigure and rebuild the kernel with that option enabled, if
they need it.


I'm going to bet that all database servers in the last 5 years are 64-bit, so your theorizing is moot.

--
Supporting World Peace Through Nuclear Pacification



reply via email to

[Prev in Thread] Current Thread [Next in Thread]