xCAT/xcat-core
2
0
Fork 0
mirror of https://github.com/xcat2/xcat-core.git synced 2025-06-15 10:50:28 +00:00
Code Issues Releases Wiki Activity

Remove trailing spaces in file docs/source/advanced/performance_tuning/linux_os_tuning.rst

Browse Source
This commit is contained in:
GONG Jie
2017-12-31 23:59:59 +00:00
parent ba06eb05e7
commit 37f89d2b20
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
docs/source/advanced/performance_tuning/linux_os_tuning.rst
View File

@ -4,8 +4,8 @@ System Tuning Settings for Linux
Adjusting Operating System tunables can improve large scale cluster performance, avoid bottlenecks, and prevent failures. The following sections are a collection of suggestions that have been gathered from various large scale HPC clusters. You should investigate and evaluate the validity of each suggestion before applying them to your cluster.
#. Tuning Linux ulimits:
#. Tuning Linux ulimits:
The open file limits are important to high concurrence network services, such as ``xcatd``. For a large cluster, it is required to increase the number of open file limit to avoid **Too many open files** error. The default value is *1024* in most OS distributions, to add below configuration in ``/etc/security/limits.conf`` to increase to *14096*.
::
@ -24,7 +24,7 @@ Adjusting Operating System tunables can improve large scale cluster performance,
net.core.rmem_default = 65536
net.core.wmem_default = 65536
net.core.somaxconn = 8192
net.ipv4.tcp_rmem = 4096 33554432 33554432
net.ipv4.tcp_wmem = 4096 33554432 33554432
net.ipv4.tcp_mem= 33554432 33554432 33554432