setspace kill the \flushbottom, how to make the sep between footnote item equal that in normal text

Question

I want double spacing, but then sep between footnote item is strange. I use setspace package, but it kill the \flushbottom mechanism.

Is there a method after I set \linespread{2}, the footnote text area have no other difference with normal text area, just like a \footnotesize declaration insert into?

Anyway, here is my code:

\documentclass{article}
\linespread{2}
\usepackage{lipsum}
\begin{document}
\lipsum[1]
abc\footnote{murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur} def\footnote{murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur}
\lipsum[2]
\end{document}

See here. I am not satisfied with the sep between the two footnotes. I want they could be this.

If I use setspace, the bottom of page is ragged. It's too ugly. There are the samples (please compare the output, especially bottom of page 1)

\documentclass{article}
\usepackage{lipsum}
\usepackage[width=5in,height=8in]{geometry}
\usepackage{amsmath}
\usepackage{setspace}
\doublespacing
%\linespread{1.667}
\usepackage{footmisc}
\setlength{\parskip}{0pt}
\flushbottom
\newcommand{\MY}{\dfrac{1+\dfrac{\sum}{\sum}}{\dfrac{\sum}{\sum}+1}}
\begin{document}
\setlength{\abovedisplayskip}{1pt plus0.1pt minus0.1pt}
\setlength{\belowdisplayskip}{1pt plus0.1pt minus0.1pt}
\lipsum[2]
\[\MY\]

\lipsum[2]
\[\MY\]

\lipsum[2]
\[\MY\]

\lipsum[2]
\[\MY\]
\end{document}



\documentclass{article}
\usepackage{lipsum}
\usepackage[width=5in,height=8in]{geometry}
\usepackage{amsmath}
%\usepackage{setspace}
%\doublespacing
\linespread{1.667}
\usepackage{footmisc}
\setlength{\parskip}{0pt}
\flushbottom
\newcommand{\MY}{\dfrac{1+\dfrac{\sum}{\sum}}{\dfrac{\sum}{\sum}+1}}
\begin{document}
\setlength{\abovedisplayskip}{1pt plus0.1pt minus0.1pt}
\setlength{\belowdisplayskip}{1pt plus0.1pt minus0.1pt}
\lipsum[2]
\[\MY\]

\lipsum[2]
\[\MY\]

\lipsum[2]
\[\MY\]

\lipsum[2]
\[\MY\]
\end{document}

Answer 1

use package setspace

\documentclass{article}
\usepackage{lipsum}
\usepackage{setspace}
\doublespacing
\usepackage{footmisc}
\renewcommand\footnotelayout{\doublespacing}
\begin{document}
\lipsum[1]
abc\footnote{murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur} def\footnote{murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur murmur}
\lipsum[2]
\end{document}