1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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4 <META http-equiv="Content-Type" content="text/html; charset=Windows-1252">
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5 <TITLE>-slp (Set Large Pages mode) switch</TITLE>
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6 <LINK href="style.css" rel="stylesheet" type="text/css">
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11 <H1>-slp (Set Large Pages mode) switch</H1>
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13 <P>Sets Large Pages mode.</P>
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17 <PRE class="syntax">
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23 <TR><TH width="80">Switch</TH> <TH>Description</TH></TR>
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24 <TR><TD>-slp</TD> <TD>Enables Large Pages mode.</TD></TR>
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25 <TR><TD>-slp-</TD> <TD>Disables Large Pages mode. This option is default for all commands.</TD></TR>
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28 <P>Large Pages mode increases the speed of compression.
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29 However, there is a pause at the start of compression while 7-Zip allocates the large pages in memory.
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30 If 7-Zip can't allocate large pages, it allocates usual small pages.
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31 Also, the Windows Task Manager doesn't show the real memory usage of the program, if 7-Zip uses large pages.
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32 This feature works only on Windows 2003 / XP x64.
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33 Also, it requires administrator's rights for your system.
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34 The recommended size of RAM for this feature is 1 GB or more.
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35 To install this feature, you must run the 7-Zip File Manager at least once,
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36 close it, and then reboot the system.</P>
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37 <P>Your system can hang for several seconds at compressing starting, if you use -slp mode.
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38 So it's not recommended to use -slp mode to compress small data sets (less than 100 MB).</P>
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43 <PRE class="example">
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44 7z a archive.7z -slp a.iso
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47 <P>compresses <SPAN class="filename">a.iso</SPAN> file with Large Pages mode switched on.</P>
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