[olug] PHP-FPM, and text/stream Web pages, and memory utilization
lou at paprikash.com
Wed Jul 15 15:30:41 CDT 2020
So I'm working on a Web site where users will maintain a persistent
connection to receive events. It's in PHP, the server is using PHP-FPM
and Apache. Each persistent connection requires a process to send
events to that user.
The question is, how can I measure the memory utilization of each
instance of the process for sending events? I *think* what I'm really
interested in is the USS (Unique Set Size), not the RSS (Resident Set
Size), which will essentially give me the unique memory usage plus the
memory used by shared libraries. Do I have the concept right?
I'm using smem to investigate this; good tool for the job, or ... ?
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