After running following code
\documentclass[10pt]{article}
\usepackage{multirow}
\begin{document}
\begin{tabular}{|l|l|l|} \hline
\multicolumn{3}{|c|}{Schedulers} \\ \hline
\multirow{3}{3cm}{Row 1. long text long text long text long text long text long text long text long text long text long text long text long text long text long text long text long text long text } & RR & Round Robin \\
& EF & Earliest First \\
& LL & Lightest Loaded \\ \hline
\multirow{4}{*}{Row 2.} & MM & Min-Min \\
& MX & Max-Min \\
& DL & Dynamic Level \\
& RC & Relative Cost \\ \hline
\multirow{4}{*}{Row 3.} & PN & This paper \\
& ZO & Genetic Algorithm\\
& TA & Tabu search\\
& SA & Simlulated Annealing \\ \hline
\end{tabular}
\end{document}
I get this output:
What should I do to make first three rows (RR, EF and LL) accordingly higher?