From: travis@sgi.com
To: Andrew Morton <akpm@linux-foundation.org>, Andi Kleen <ak@suse.de>
Cc: Christoph Lameter <clameter@sgi.com>,
Jack Steiner <steiner@sgi.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH 0/1] x86: Convert cpuinfo_x86 array to a per_cpu array v3
Date: Mon, 24 Sep 2007 14:08:53 -0700 [thread overview]
Message-ID: <20070924210853.256462000@sgi.com> (raw)
v3: fix compile errors in arch-i386-allmodconfig build
v2: rebasing on 2.6.23-rc6-mm1
Analyzing various data structures when NR_CPU count is raised
to 4096 shows the following arrays over 128k. If the maximum
number of cpus are not installed (about 99.99% of the time),
then a large percentage of this memory is wasted.
--
151289856 CALNDATA irq_desc
135530496 RMDATATA irq_cfg
3145728 CALNDATA cpu_data
2101248 BSS irq_lists
2097152 RMDATATA cpu_sibling_map
2097152 RMDATATA cpu_core_map
1575936 BSS irq_2_pin
1050624 BSS irq_timer_state
614400 INITDATA early_node_map
525376 PERCPU per_cpu__kstat
524608 DATA unix_proto
524608 DATA udpv6_prot
524608 DATA udplitev6_prot
524608 DATA udplite_prot
524608 DATA udp_prot
524608 DATA tcpv6_prot
524608 DATA tcp_prot
524608 DATA rawv6_prot
524608 DATA raw_prot
524608 DATA packet_proto
524608 DATA netlink_proto
524288 BSS cpu_devices
524288 BSS boot_pageset
524288 CALNDATA boot_cpu_pda
262144 RMDATATA node_to_cpumask
262144 BSS __log_buf
131072 BSS entries
cpu_sibling_map and cpu_core_map have been taken care of in
a prior patch. This patch deals with the cpu_data array of
cpuinfo_x86 structs. The model that was used in sparc64
architecture was adopted for x86.
--
WARNING: multiple messages have this Message-ID (diff)
From: travis@sgi.com
To: Andrew Morton <akpm@linux-foundation.org>, Andi Kleen <ak@suse.de>
Cc: Christoph Lameter <clameter@sgi.com>,
Jack Steiner <steiner@sgi.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH 0/1] x86: Convert cpuinfo_x86 array to a per_cpu array v3
Date: Mon, 24 Sep 2007 14:08:53 -0700 [thread overview]
Message-ID: <20070924210853.256462000@sgi.com> (raw)
v3: fix compile errors in arch-i386-allmodconfig build
v2: rebasing on 2.6.23-rc6-mm1
Analyzing various data structures when NR_CPU count is raised
to 4096 shows the following arrays over 128k. If the maximum
number of cpus are not installed (about 99.99% of the time),
then a large percentage of this memory is wasted.
--
151289856 CALNDATA irq_desc
135530496 RMDATATA irq_cfg
3145728 CALNDATA cpu_data
2101248 BSS irq_lists
2097152 RMDATATA cpu_sibling_map
2097152 RMDATATA cpu_core_map
1575936 BSS irq_2_pin
1050624 BSS irq_timer_state
614400 INITDATA early_node_map
525376 PERCPU per_cpu__kstat
524608 DATA unix_proto
524608 DATA udpv6_prot
524608 DATA udplitev6_prot
524608 DATA udplite_prot
524608 DATA udp_prot
524608 DATA tcpv6_prot
524608 DATA tcp_prot
524608 DATA rawv6_prot
524608 DATA raw_prot
524608 DATA packet_proto
524608 DATA netlink_proto
524288 BSS cpu_devices
524288 BSS boot_pageset
524288 CALNDATA boot_cpu_pda
262144 RMDATATA node_to_cpumask
262144 BSS __log_buf
131072 BSS entries
cpu_sibling_map and cpu_core_map have been taken care of in
a prior patch. This patch deals with the cpu_data array of
cpuinfo_x86 structs. The model that was used in sparc64
architecture was adopted for x86.
--
--
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next reply other threads:[~2007-09-24 21:09 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-24 21:08 travis [this message]
2007-09-24 21:08 ` [PATCH 0/1] x86: Convert cpuinfo_x86 array to a per_cpu array v3 travis
2007-09-24 21:08 ` [PATCH 1/1] " travis
2007-09-24 21:08 ` travis
2007-09-24 22:01 ` roel
2007-09-24 22:01 ` roel
2007-09-24 23:24 ` Dave Jones
2007-09-24 23:24 ` Dave Jones
2007-09-25 0:20 ` roel
2007-09-25 0:20 ` roel
2007-09-25 0:31 ` Dave Jones
2007-09-25 0:31 ` Dave Jones
2007-10-16 8:18 ` [PATCH 0/1] " Andrew Morton
2007-10-16 8:18 ` Andrew Morton
2007-08-04 1:15 ` Mike Travis
2007-08-04 1:15 ` Mike Travis
2007-10-16 15:02 ` Christoph Lameter
2007-10-16 15:02 ` Christoph Lameter
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