sonic-pi

https://github.com/sonic-pi-net/sonic-pi

C++

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Sys::ProcTable::Smaps#pss

Proportional set size

PSS is the size of private pages added to each shared mapping's size
divided by the number of processes that share it.  It is meant to
provide a better representation of the amount of memory actually used
by a process.

If a process has 4k of private pages, 4k of shared pages shared with one
other process, and 3k of pages shared with two other processes, the PSS
is:

4k + (4k / 2) + (3k / 3) = 7k

Source | Google | Stack overflow

Edit

git clone [email protected]:sonic-pi-net/sonic-pi.git

cd sonic-pi

open app/server/ruby/vendor/sys-proctable-sys-proctable-1.2.6/lib/linux/sys/proctable/smaps.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Sys--ProcTable--Smaps-pss-for-pr

# Commit to git

git add app/server/ruby/vendor/sys-proctable-sys-proctable-1.2.6/lib/linux/sys/proctable/smaps.rbgit commit -m "better docs for Sys::ProcTable::Smaps#pss"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Sys--ProcTable--Smaps-pss-for-pr

hub pull-request

# Celebrate!