Re: [PATCH v4 7/8] Display current tcp memory allocation in kmemcgroup

From: Glauber Costa
Date: Mon Oct 03 2011 - 08:20:35 EST

On 10/03/2011 04:14 PM, Kirill A. Shutemov wrote:
On Mon, Oct 03, 2011 at 02:18:42PM +0400, Glauber Costa wrote:
This patch introduces kmem.tcp_current_memory file, living in the
kmem_cgroup filesystem. It is a simple read-only file that displays the
amount of kernel memory currently consumed by the cgroup.

Signed-off-by: Glauber Costa<glommer@xxxxxxxxxxxxx>
CC: David S. Miller<davem@xxxxxxxxxxxxx>
CC: Hiroyouki Kamezawa<kamezawa.hiroyu@xxxxxxxxxxxxxx>
CC: Eric W. Biederman<ebiederm@xxxxxxxxxxxx>
Documentation/cgroups/memory.txt | 1 +
mm/memcontrol.c | 11 +++++++++++
2 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index 1ffde3e..f5a539d 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -79,6 +79,7 @@ Brief summary of control files.
memory.independent_kmem_limit # select whether or not kernel memory limits are
independent of user limits
memory.kmem.tcp.max_memory # set/show hard limit for tcp buf memory
+ memory.kmem.tcp.current_memory # show current tcp buf memory allocation

Both are in pages, right?
Shouldn't it be scaled to bytes and named uniform with other memcg file?

You are absolutely correct.
Since the internal tcp comparison works, I just ended up never noticing this.


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