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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <HTML> <HEAD> <META http-equiv="Content-Type" content="text/html; charset=Windows-1252"> <TITLE>-slp (Set Large Pages mode) switch</TITLE> <LINK href="style.css" rel="stylesheet" type="text/css"> </HEAD> <BODY> <H1>-slp (Set Large Pages mode) switch</H1> <P>Sets Large Pages mode.</P> <H4>Syntax</H4> <PRE class="syntax"> -slp[-] </PRE> <TABLE> <TR><TH width="80">Switch</TH> <TH>Description</TH></TR> <TR><TD>-slp</TD> <TD>Enables Large Pages mode.</TD></TR> <TR><TD>-slp-</TD> <TD>Disables Large Pages mode. This option is default for all commands.</TD></TR> </TABLE> <P>Large Pages mode increases the speed of compression. However, there is a pause at the start of compression while 7-Zip allocates the large pages in memory. If 7-Zip can't allocate large pages, it allocates usual small pages. Also, the Windows Task Manager doesn't show the real memory usage of the program, if 7-Zip uses large pages. This feature works only on Windows 2003 / XP x64. Also, it requires administrator's rights for your system. The recommended size of RAM for this feature is 1 GB or more. To install this feature, you must run the 7-Zip File Manager at least once, close it, and then reboot the system.</P> <P>Your system can hang for several seconds at compressing starting, if you use -slp mode. So it's not recommended to use -slp mode to compress small data sets (less than 100 MB).</P> <H4>Example</H4> <PRE class="example"> 7z a archive.7z -slp a.iso </PRE> <P>compresses <SPAN class="filename">a.iso</SPAN> file with Large Pages mode switched on.</P> </BODY> </HTML>