<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:10.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt'>Hey Ahmad,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>It’s possible to use another proxy software.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>If you do not need any specific functions that squid has you can easily run a forward proxy that will probably<br>be simpler to operate, unless… you have something specific that only squid gives.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>All The Bests,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Eliezer<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:11.0pt'>----<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Eliezer Croitoru<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>NgTech, Tech Support<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Mobile: +972-5-28704261<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Email: <a href="mailto:ngtech1ltd@gmail.com">ngtech1ltd@gmail.com</a><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt'>From:</span></b><span style='font-size:11.0pt'> squid-users <squid-users-bounces@lists.squid-cache.org> <b>On Behalf Of </b>Ahmad Alzaeem<br><b>Sent:</b> Thursday, March 31, 2022 19:19<br><b>To:</b> Alex Rousskov <rousskov@measurement-factory.com>; squid-users@lists.squid-cache.org<br><b>Subject:</b> Re: [squid-users] Squid 3-5 CPU optimization and best practise .<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt'>Hello Alex , <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Thanks for your reply ,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>I thought as long as squid is only as forward proxy only and no https , we may disable some built in squid features that is not required in my purpose for getting lower CPU consumption such as use minimum squid functions .<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>We don’t have any bottleneck in squid .<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>The only issue is when there is a very high traffic that will use the CPU at higher scale .<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>So my only goal is decrease squid CPU consumption as much as I can .<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>So I build local dns server to fasten the lookup , but still don’t see any rich topics online for my goal .<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Thanks <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:12.0pt;color:black'>From: </span></b><span style='font-size:12.0pt;color:black'>squid-users <<a href="mailto:squid-users-bounces@lists.squid-cache.org">squid-users-bounces@lists.squid-cache.org</a>> on behalf of Alex Rousskov <<a href="mailto:rousskov@measurement-factory.com">rousskov@measurement-factory.com</a>><br><b>Date: </b>Thursday, March 31, 2022 at 8:59 AM<br><b>To: </b><a href="mailto:squid-users@lists.squid-cache.org">squid-users@lists.squid-cache.org</a> <<a href="mailto:squid-users@lists.squid-cache.org">squid-users@lists.squid-cache.org</a>><br><b>Subject: </b>Re: [squid-users] Squid 3-5 CPU optimization and best practise .<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:11.0pt'>On 3/31/22 11:04, Ahmad Alzaeem wrote:<br><br>> My main question is , is there any major changes in squid 5 that make it <br>> faster than squid 3 or squid 4 in terms of low CPU usage?<br><br>I do not recall any _major_ changes in that area, but the http_port <br>worker-queues option may be of interest to those looking for performance <br>optimizations.<br><br><br>> Is there any best practice I can use to lower the cpu usage or response <br>> time ?<br><br>YMMV, but I would start by using (the right number of) SMP workers with <br>cpu_affinity_map and worker-queues. More on that at<br><a href="https://wiki.squid-cache.org/Features/SmpScale#How_to_configure_SMP_Squid_for_top_performance.3F">https://wiki.squid-cache.org/Features/SmpScale#How_to_configure_SMP_Squid_for_top_performance.3F</a><br><br>Beyond that, one would have to analyze your Squid performance to find <br>out performance bottleneck(s) and then try to eliminate them or reduce <br>their impact.<br><br><br>> Like Deny caching on the HDD or server_persistent_connections off <br>> similar directives<br><br>Disabling persistent connections will make things _worse_ in many cases <br>but YMMV. Whether cache_dirs (and even shared memory cache) slow down or <br>speed up an average response depends on your environment -- measure and <br>adjust/remove accordingly.<br><br><br>HTH,<br><br>Alex.<br>_______________________________________________<br>squid-users mailing list<br><a href="mailto:squid-users@lists.squid-cache.org">squid-users@lists.squid-cache.org</a><br><a href="http://lists.squid-cache.org/listinfo/squid-users">http://lists.squid-cache.org/listinfo/squid-users</a><o:p></o:p></span></p></div></div></body></html>