[couchdb-documentation] branch master updated: Improve docs on bumping fd limits

[wo...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

wohali pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/couchdb-documentation.git


The following commit(s) were added to refs/heads/master by this push:
     new 35a4f9f  Improve docs on bumping fd limits
35a4f9f is described below

commit 35a4f9f307a2d3fc493fa32ad8a7e67056de4f79
Author: Joan Touzet <jo...@atypical.net>
AuthorDate: Thu Oct 12 13:42:04 2017 -0400

    Improve docs on bumping fd limits
---
 src/maintenance/performance.rst | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/src/maintenance/performance.rst b/src/maintenance/performance.rst
index 5ee2a12..9d6bbe7 100644
--- a/src/maintenance/performance.rst
+++ b/src/maintenance/performance.rst
@@ -133,11 +133,18 @@ If your system is set up to use the Pluggable Authentication Modules (`PAM`_)
 system (as is the case with nearly all modern Linuxes), increasing this limit
 is straightforward. For example, creating a file named
 ``/etc/security/limits.d/100-couchdb.conf`` with the following contents will
-ensure that CouchDB can open up to 4096 file descriptors at once::
+ensure that CouchDB can open up to 10000 file descriptors at once::
 
     #<domain>    <type>    <item>    <value>
-    couchdb      hard      nofile    4096
-    couchdb      soft      nofile    4096
+    couchdb      hard      nofile    10000
+    couchdb      soft      nofile    10000
+
+If you are using our Debian/Ubuntu sysvinit script (``/etc/init.d/couchdb``),
+you also need to raise the limits for the root user::
+
+    #<domain>    <type>    <item>    <value>
+    root         hard      nofile    10000
+    root         soft      nofile    10000
 
 You may also have to edit the ``/etc/pam.d/common-session`` and
 ``/etc/pam.d/common-session-noninteractive`` files to add the line::
@@ -160,8 +167,11 @@ is allowed to hold open at once.
 
 If your system does not use PAM, a `ulimit` command is usually available for
 use in a custom script to launch CouchDB with increased resource limits.
-If necessary, feel free to increase this limits as long as your hardware can
-handle the load.
+Typical syntax would be something like `ulimit -n 10000`.
+
+In general, modern UNIX-like systems can handle very large numbers of file
+handles per process (e.g. 100000) without problem. Don't be afraid to increase
+this limit on your system.
 
 .. _PAM: http://www.linux-pam.org/
 

-- 
To stop receiving notification emails like this one, please contact
['"commits@couchdb.apache.org" <co...@couchdb.apache.org>'].