On 02/09/2014 06:48 AM, Eliezer Croitoru wrote: > I have helpers in all sort of languages and it seems to me that there is > a limit that do exist on the interface between squid and the helpers by > the nature of the code as code. For sequential helpers, the throughput is a function of response time: requests per second = number of helpers / mean response time where the response time is the time from the creation of the helper request (by Squid) to the end of processing of the helper response (by Squid). Thus, it includes overheads of all components participating in helper transaction (Squid, helper, OS, etc). For the so called concurrent helpers, the throughput ought to be unlimited as long as you are willing to increase concurrency levels, provide RAM, tolerate the response delays, etc. However, the above formula works for concurrent helpers with a given concurrency level if you replace "number of helpers" with "configured concurrency level multiplied by the number of helpers". There may also be some helper API implementation limitations that lower the above theoretical limits, but I personally do not know of any specific ones. HTH, Alex.
