Scott, Many thanks for the inputs. This definitely helps. Will be testing out the performance with different buffer size 1K and higher.
Rommel. From: Scott Gifford [mailto:sgiff...@suspectclass.com] Sent: Thursday, July 19, 2012 8:13 PM To: Rommel Sharma Cc: mod_perl list Subject: Re: mod_perl Filters: Selecting the most appropriate buffer size On Tue, Jul 10, 2012 at 7:16 AM, Rommel Sharma <rsharm...@sapient.com<mailto:rsharm...@sapient.com>> wrote: Hi All, I am going through the documentation on mod_perl filters at the link below: http://perl.apache.org/docs/2.0/user/handlers/filters.html Examples set a buffer size to process the content held in the buffer like: use constant BUFF_LEN => 1024; What is the best approach to reach most optimum buffer size? Is there a best practices like guideline here? Not sure about mod_perl specifics, but the tradeoff with buffer sizes is generally that larger buffers give better overall throughput, at the cost of more memory and latency. On a disk, using a number that is a multiple of the filesystem block size will usually give the best performance. With data coming from the network or a script, I don't think it will matter much. You can certainly try different values and measure the results, but anything 1K or more will probably be OK. Hope this helps, ------Scott.
