From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
To: "'Steven Rostedt'" <rostedt@goodmis.org>,
"LKML" <linux-kernel@vger.kernel.org>,
"Andrew Morton" <akpm@osdl.org>
Cc: "Linus Torvalds" <torvalds@osdl.org>,
"Ingo Molnar" <mingo@elte.hu>,
"Thomas Gleixner" <tglx@linutronix.de>, "Andi Kleen" <ak@suse.de>,
"Martin Mares" <mj@atrey.karlin.mff.cuni.cz>, <bjornw@axis.com>,
<schwidefsky@de.ibm.com>, <benedict.gaster@superh.com>,
<lethal@linux-sh.org>, "Chris Zankel" <chris@zankel.net>,
"Marc Gauthier" <marc@tensilica.com>,
"Joe Taylor" <joe@tensilica.com>,
"David Mosberger-Tang" <davidm@hpl.hp.com>, <rth@twiddle.net>,
<spyro@f2s.com>, <starvik@axis.com>,
"Luck, Tony" <tony.luck@intel.com>, <linux-ia64@vger.kernel.org>,
<ralf@linux-mips.org>, <linux-mips@linux-mips.org>,
<grundler@parisc-linux.org>, <parisc-linux@parisc-linux.org>,
<linuxppc-dev@ozlabs.org>, <paulus@samba.org>,
<linux390@de.ibm.com>, <lethal@linux-sh.org>,
<davem@davemloft.net>, <chris@zankel.net>
Subject: RE: [PATCH 00/05] robust per_cpu allocation for modules
Date: Fri, 14 Apr 2006 15:12:52 -0700 [thread overview]
Message-ID: <4t16i2$ma94t@orsmga001.jf.intel.com> (raw)
In-Reply-To: <1145049535.1336.128.camel@localhost.localdomain>
Steven Rostedt wrote on Friday, April 14, 2006 2:19 PM
> So the current solution has two flaws:
> 1. not robust. If we someday add more modules that together take up
> more than 14K, we need to manually update the PERCPU_ENOUGH_ROOM.
> 2. waste of memory. We have 14K of memory wasted per CPU. Remember
> a 64 processor machine would be wasting 896K of memory!
If someone who has the money to own a 64-process machine, 896K of memory
is pocket change ;-)
- Ken
next prev parent reply other threads:[~2006-04-14 22:13 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-14 21:18 [PATCH 00/05] robust per_cpu allocation for modules Steven Rostedt
2006-04-14 22:06 ` Andrew Morton
2006-04-14 22:12 ` Steven Rostedt
2006-04-14 22:12 ` Chen, Kenneth W [this message]
2006-04-14 22:19 ` Steven Rostedt
2006-04-15 3:10 ` [PATCH 00/08] robust per_cpu allocation for modules - V2 Steven Rostedt
2006-04-15 5:32 ` [PATCH 00/05] robust per_cpu allocation for modules Nick Piggin
2006-04-15 20:17 ` Steven Rostedt
2006-04-16 2:47 ` Nick Piggin
2006-04-16 3:53 ` Steven Rostedt
2006-04-16 7:02 ` Paul Mackerras
2006-04-16 13:40 ` Steven Rostedt
2006-04-16 14:03 ` Sam Ravnborg
2006-04-16 15:34 ` Arnd Bergmann
2006-04-16 18:03 ` Tony Luck
2006-04-17 0:45 ` Steven Rostedt
2006-04-17 2:07 ` Arnd Bergmann
2006-04-17 2:17 ` Steven Rostedt
2006-04-17 20:06 ` Ravikiran G Thirumalai
2006-04-17 6:47 ` Rusty Russell
2006-04-17 11:33 ` Steven Rostedt
2006-04-16 7:06 ` Nick Piggin
2006-04-16 16:06 ` Steven Rostedt
2006-04-17 17:10 ` Andi Kleen
2006-04-17 16:55 ` Christoph Lameter
2006-04-17 22:02 ` Ravikiran G Thirumalai
2006-04-17 23:44 ` Steven Rostedt
2006-04-17 23:48 ` Christoph Lameter
2006-04-18 1:51 ` Steven Rostedt
2006-04-18 6:42 ` Nick Piggin
2006-04-18 12:47 ` Steven Rostedt
2006-04-16 6:35 ` Paul Mackerras
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