Re: [PATCH v4 6/8] tcp buffer limitation: per-cgroup limit
From: KAMEZAWA Hiroyuki <hidden>
Date: 2011-10-04 01:22:08
Also in:
linux-mm, lkml
On Mon, 3 Oct 2011 14:18:41 +0400 Glauber Costa [off-list ref] wrote:
quoted hunk ↗ jump to hunk
This patch uses the "tcp_max_mem" field of the kmem_cgroup to effectively control the amount of kernel memory pinned by a cgroup. We have to make sure that none of the memory pressure thresholds specified in the namespace are bigger than the current cgroup. Signed-off-by: Glauber Costa <redacted> CC: David S. Miller <davem@davemloft.net> CC: Hiroyouki Kamezawa <redacted> CC: Eric W. Biederman <redacted> --- Documentation/cgroups/memory.txt | 1 + include/linux/memcontrol.h | 10 +++++ include/net/tcp.h | 1 + mm/memcontrol.c | 76 +++++++++++++++++++++++++++++++++++--- net/ipv4/sysctl_net_ipv4.c | 20 ++++++++++ 5 files changed, 102 insertions(+), 6 deletions(-)diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index 6f1954a..1ffde3e 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt@@ -78,6 +78,7 @@ 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
What is the releationship between tcp.max_memory and kmem_limit ? tcp.max_memory < kmem_limit ? usage of tcp memory is included in kmem usage ? Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>