freakie
Verified User
After days of digging i found out that setting /proc/sys/net/ipv4/tcp_sack to 0 gives our centos 6 and 7 servers problems when downloading from wordpress
All customers with wordpress websites can't download or update wordpress themes and plugins.
When downloading wordpress via the CLI: wget https://nl.wordpress.org/wordpress-4.9.2-nl_NL.zip hangs after 10 seconds and stalls completely.
When undoing the change:
echo 1 > /proc/sys/net/ipv4/tcp_sack
The download is ready in a few seconds and all wordpress websites can dowload again.
Has anyone seen this before?
The machines all are virtual servers on vmware. most of them use intel drivers and some the vmxnet drivers
All customers with wordpress websites can't download or update wordpress themes and plugins.
When downloading wordpress via the CLI: wget https://nl.wordpress.org/wordpress-4.9.2-nl_NL.zip hangs after 10 seconds and stalls completely.
When undoing the change:
echo 1 > /proc/sys/net/ipv4/tcp_sack
The download is ready in a few seconds and all wordpress websites can dowload again.
Has anyone seen this before?
The machines all are virtual servers on vmware. most of them use intel drivers and some the vmxnet drivers