From: Dave Hansen <haveblue@us.ibm.com>
To: linux-ia64@vger.kernel.org
Subject: RE: show_mem() for ia64 discontig takes a really long time on
Date: Thu, 30 Mar 2006 18:26:23 +0000 [thread overview]
Message-ID: <1143743183.9731.84.camel@localhost.localdomain> (raw)
In-Reply-To: <20060328184315.GA8162@lnx-holt.americas.sgi.com>
On Thu, 2006-03-30 at 10:18 -0800, Luck, Tony wrote:
> > What about the earlier proposal of advancing at pmd and pud granule by
> > walking the page table? There it can walk at 32MB/64GB step.
>
> That puts constraints on where the platform may align physical
> memory. 32M may not be unreasonable (Can you even buy DIMMS that
> small anymore?) But 64G is way too large.
>
> Since we only deal with blocks of memory in IA64_GRANULE_SIZE
> pieces (16M or 64M) that would seem to be the natural skip
> amount.
Instead of tacking on yet another hack to vmem_map[], is this perhaps a
time to think about moving to sparsemem on systems where you see these
issues? Are there remaining issues that ia64 has with it?
-- Dave
next prev parent reply other threads:[~2006-03-30 18:26 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-28 18:43 show_mem() for ia64 discontig takes a really long time on large systems Robin Holt
2006-03-28 19:16 ` show_mem() for ia64 discontig takes a really long time on Dave Hansen
2006-03-28 19:23 ` show_mem() for ia64 discontig takes a really long time on large systems Bob Picco
2006-03-28 19:34 ` show_mem() for ia64 discontig takes a really long time on Dave Hansen
2006-03-28 20:09 ` show_mem() for ia64 discontig takes a really long time on large systems Chen, Kenneth W
2006-03-28 20:56 ` Robin Holt
2006-03-28 21:00 ` Robin Holt
2006-03-29 0:18 ` show_mem() for ia64 discontig takes a really long time on large KAMEZAWA Hiroyuki
2006-03-30 17:29 ` show_mem() for ia64 discontig takes a really long time on large systems Jack Steiner
2006-03-30 17:48 ` Chen, Kenneth W
2006-03-30 18:18 ` Luck, Tony
2006-03-30 18:26 ` Dave Hansen [this message]
2006-03-30 18:28 ` Luck, Tony
2006-03-30 18:34 ` show_mem() for ia64 discontig takes a really long time on Dave Hansen
2006-03-30 19:24 ` show_mem() for ia64 discontig takes a really long time on large systems Chen, Kenneth W
2006-04-12 7:18 ` Robin Holt
2006-04-12 17:22 ` Chen, Kenneth W
2006-04-12 17:36 ` Bob Picco
2006-04-13 3:02 ` Robin Holt
2006-04-13 16:02 ` Robin Holt
2006-04-13 16:15 ` Bob Picco
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