Here's an excerpt from the Astaro KB:
SMP Kernel slows down the HTTP-Proxy
Product Version: 5.000 or later
Symptom:
If using Astaro Security Linux with an installed SMP kernel, the HTTP-Proxy performance slows down by approx. 50%.
Cause:
This is a known issue of the current Linux kernel.
Resolution:
If the major task of Astaro Security Linux is to serve as an HTTP-Proxy, you can increase the performance by installing the default Linux kernel.
----IMHO, this should really read as "there's an issue with Squid AND the SMP Linux Kernel" as other modules aren't affected.
CTO, Convergent Information Security Solutions, LLC
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CTO, Convergent Information Security Solutions, LLC
https://www.convergesecurity.com
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You're taking this wrong... just install the ASG software on your hardware with the NOSMP option (the first screen you see after you boot off the install CD says how to do this). If you are looking at an appliance (if it's one of the bigger ones with hyperthreading), it will already be setup this way. It works just fine without SMP enabled, and the bigger units can handle a LOT of requests. Memory is a key here, we use 512 as a minimum, with 1GB becoming more of a norm lately. Trust me, it works great.
CTO, Convergent Information Security Solutions, LLC
https://www.convergesecurity.com
Advice given as posted on this forum does not construe a support relationship or other relationship with Convergent Information Security Solutions, LLC or its subsidiaries. Use the advice given at your own risk.
CTO, Convergent Information Security Solutions, LLC
https://www.convergesecurity.com
Advice given as posted on this forum does not construe a support relationship or other relationship with Convergent Information Security Solutions, LLC or its subsidiaries. Use the advice given at your own risk.
CTO, Convergent Information Security Solutions, LLC
https://www.convergesecurity.com
Advice given as posted on this forum does not construe a support relationship or other relationship with Convergent Information Security Solutions, LLC or its subsidiaries. Use the advice given at your own risk.
Am I right (at least according to the squid-cache.org site) that Squid still does not take advantage of SMP? It sounds like the stability issue is resolved, but Squid doesn't take advantage of multiple processors yet, does it?Squid itself is a single-threaded process, though depending on the disk-backend you use it can utililize dedicated processes for processing IO (specifically the diskd backend).
Am I right (at least according to the squid-cache.org site) that Squid still does not take advantage of SMP? It sounds like the stability issue is resolved, but Squid doesn't take advantage of multiple processors yet, does it?Squid itself is a single-threaded process, though depending on the disk-backend you use it can utililize dedicated processes for processing IO (specifically the diskd backend).