in /etc/sysctl.conf, add:
net.core.rmem_max = 8388608
net.core.wmem_max = 8388608
net.core.wmem_default = 32768
net.core.rmem_default = 32768
net.ipv4.tcp_wmem = 1024 32768 8388608
net.ipv4.tcp_rmem = 1024 32768 8388608
--
Best Regards,
Heiler Bemerguy
Network Manager - CINBESA
55 91 98151-4894/3184-1751
Em 02/08/2016 23:37, Paul van Tuel escreveu:
Hi All,
We've been running Squid for many years. Recently we upgraded our
internet link to a 1Gbps link, but we are finding that squid is not
able to drive this link to its full potential (previous links have
been 30Mbps or 100Mbps).
Currently running squid 3.5.1, but have tried 3.4, 3.3, 3.2 versions too.
Upload speeds from the server (without using the local proxy) to the
internet are 200-300Mbps
Download speeds from the server (without using the local proxy) to the
internet are 300-600Mbps (the link is not guaranteed).
If we use squid (or tinyproxy) to upload a file the upload speed is
varies from 15-50Mbps.
If we use squid (or tinyproxy) to download a file from the internet,
the speeds varies from 80-115Mbps.
We have used various combinations of hardware:
* Dell Power Edge T300, 2950 with SSD or SAS disks. Both using
bare-metal or VMWare ESXi. Quad-core 2.6GHz Xeon processors with 8G or
16G RAM
* We have used windows 7 Pro, Ubuntu, Centos 6, Centos 7 each as
bare-metal and as VM under ESXi.
* We have used a white box (Asus motherboard with 1Gbps NIC, i7, 16G
RAM) with each of the above OSes in bare-metal installations.
Squid configuration has basically been the out-of-the-box sample file
with no authentication enabled. Only one user testing the performance
of the squid proxy. The server is pretty much idle.
Each time the result is the same - if we go direct to the internet
without using the local proxy the speed is as we would expect. If we
use the local proxy, the speed drops significantly.
Is this expected behaviour? Or is there something we can do to speed
up/tune squid's performance? I would be expecting squid to utilise the
full bandwidth available (similar to what the server can download if
you do not use a proxy).
Thank you
Paul.
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