From 6abbf7db4a5f9473618709098d47408595580439 Mon Sep 17 00:00:00 2001
From: Wen Guan <wguan.icedew@gmail.com>
Date: Thu, 1 Feb 2024 12:09:08 +0100
Subject: [PATCH] update wsgi listen backlog limitation

---
 Dockerfile                                               | 4 ++++
 .../panda_server-httpd-FastCGI.conf.rpmnew.template      | 4 +++-
 .../sysconfig/panda_server.sysconfig.rpmnew.template     | 9 +++++++--
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index dcd46ddda..832b18307 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,6 +25,10 @@ RUN yum install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-9-x
 RUN yum install --nogpgcheck -y postgresql16
 RUN  yum clean all && rm -rf /var/cache/yum
 
+# update network limitations
+echo 4096 > /proc/sys/net/core/somaxconn
+sysctl -w net.core.somaxconn=4096
+
 # setup venv with pythonX.Y
 RUN python$(echo ${PYTHON_VERSION} | sed -E 's/\.[0-9]+$//') -m venv /opt/panda
 RUN /opt/panda/bin/pip install --no-cache-dir -U pip
diff --git a/templates/panda_server-httpd-FastCGI.conf.rpmnew.template b/templates/panda_server-httpd-FastCGI.conf.rpmnew.template
index fecc55b7d..4d70f86d2 100644
--- a/templates/panda_server-httpd-FastCGI.conf.rpmnew.template
+++ b/templates/panda_server-httpd-FastCGI.conf.rpmnew.template
@@ -28,6 +28,8 @@ MaxRequestWorkers      ${PANDA_SERVER_CONF_MAX_WORKERS}
 MaxConnectionsPerChild 2000
 </IfModule>
 
+ListenBackLog ${PANDA_SERVER_CONF_MAX_BACKLOG}
+
 ServerName ${PANDA_SERVER_CONF_SERVERNAME}
 
 DocumentRoot "@@install_purelib@@/pandaserver"
@@ -78,7 +80,7 @@ Alias /auth/ "/opt/panda/etc/panda/auth/"
 
 <IfModule mod_wsgi.c>
    WSGIPythonHome /opt/panda
-   WSGIDaemonProcess pandasrv_daemon processes=${PANDA_SERVER_CONF_NUM_WSGI} threads=1 home=/home/atlpan
+   WSGIDaemonProcess pandasrv_daemon processes=${PANDA_SERVER_CONF_NUM_WSGI} threads=8 home=/home/atlpan
    WSGIProcessGroup pandasrv_daemon
    WSGIApplicationGroup %{GLOBAL}
    WSGIScriptAliasMatch ^/server/panda/(.+)$ @@install_purelib@@/pandaserver/server/panda.py
diff --git a/templates/sysconfig/panda_server.sysconfig.rpmnew.template b/templates/sysconfig/panda_server.sysconfig.rpmnew.template
index 111e1a553..a0aef19db 100644
--- a/templates/sysconfig/panda_server.sysconfig.rpmnew.template
+++ b/templates/sysconfig/panda_server.sysconfig.rpmnew.template
@@ -61,7 +61,7 @@ fi
 
 # min number of workers
 if [[ -z "${PANDA_SERVER_CONF_MIN_WORKERS}" ]]; then
-  export PANDA_SERVER_CONF_MIN_WORKERS=25
+  export PANDA_SERVER_CONF_MIN_WORKERS=32
 fi
 
 # max number of workers
@@ -71,7 +71,12 @@ fi
 
 # max number of WSGI daemons
 if [[ -z "${PANDA_SERVER_CONF_NUM_WSGI}" ]]; then
-  export PANDA_SERVER_CONF_NUM_WSGI=12
+  export PANDA_SERVER_CONF_NUM_WSGI=32
+fi
+
+# max number of WSGI daemons
+if [[ -z "${PANDA_SERVER_CONF_MAX_BACKLOG}" ]]; then
+  export PANDA_SERVER_CONF_MAX_BACKLOG=2000
 fi
 
 # port