1# pmm<a name="EN-US_TOPIC_0000001179965839"></a> 2 3- [Command Function](#section445335110416) 4- [Syntax](#section1795712553416) 5- [Parameters](#section92544592410) 6- [Usage](#section104151141252) 7- [Example](#section11545171957) 8- [Output](#section075617368542) 9 10## Command Function<a name="section445335110416"></a> 11 12This command is used to check the usage of the physical pages and page cache of the system memory. 13 14## Syntax<a name="section1795712553416"></a> 15 16pmm 17 18## Parameters<a name="section92544592410"></a> 19 20None 21 22## Usage<a name="section104151141252"></a> 23 24This command is available only in the **Debug** version. 25 26## Example<a name="section11545171957"></a> 27 28Run **pmm**. 29 30## Output<a name="section075617368542"></a> 31 32**Figure 1** Viewing the usage of physical pages<a name="fig19209202618618"></a> 33 34 35**Table 1** Output 36 37<a name="table5579102611579"></a> 38<table><thead align="left"><tr id="row12579162613572"><th class="cellrowborder" valign="top" width="50%" id="mcps1.2.3.1.1"><p id="p18579122619578"><a name="p18579122619578"></a><a name="p18579122619578"></a>Output</p> 39</th> 40<th class="cellrowborder" valign="top" width="50%" id="mcps1.2.3.1.2"><p id="p11579182635718"><a name="p11579182635718"></a><a name="p11579182635718"></a>Description</p> 41</th> 42</tr> 43</thead> 44<tbody><tr id="row1457942675720"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p2058042605713"><a name="p2058042605713"></a><a name="p2058042605713"></a>phys_seg</p> 45</td> 46<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p1058062614579"><a name="p1058062614579"></a><a name="p1058062614579"></a>Address of the physical page control block</p> 47</td> 48</tr> 49<tr id="row14580192616575"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p858062615712"><a name="p858062615712"></a><a name="p858062615712"></a>base</p> 50</td> 51<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p1858082617577"><a name="p1858082617577"></a><a name="p1858082617577"></a>First physical page address, that is, start address of the physical page memory</p> 52</td> 53</tr> 54<tr id="row17580826115719"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p5580226155713"><a name="p5580226155713"></a><a name="p5580226155713"></a>size</p> 55</td> 56<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p85808262572"><a name="p85808262572"></a><a name="p85808262572"></a>Size of the physical page memory</p> 57</td> 58</tr> 59<tr id="row161931831175912"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p201931631185913"><a name="p201931631185913"></a><a name="p201931631185913"></a>free_pages</p> 60</td> 61<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p1919383125911"><a name="p1919383125911"></a><a name="p1919383125911"></a>Number of free physical pages</p> 62</td> 63</tr> 64<tr id="row1397105119596"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p0397951175918"><a name="p0397951175918"></a><a name="p0397951175918"></a>active anon</p> 65</td> 66<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p1139715117599"><a name="p1139715117599"></a><a name="p1139715117599"></a>Number of active anonymous pages in the page cache</p> 67</td> 68</tr> 69<tr id="row16409173520010"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p941012351409"><a name="p941012351409"></a><a name="p941012351409"></a>inactive anon</p> 70</td> 71<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p1341012355019"><a name="p1341012355019"></a><a name="p1341012355019"></a>Number of inactive anonymous pages in the page cache</p> 72</td> 73</tr> 74<tr id="row467016386014"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p10670103818015"><a name="p10670103818015"></a><a name="p10670103818015"></a>active file</p> 75</td> 76<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p1267012382019"><a name="p1267012382019"></a><a name="p1267012382019"></a>Number of active file pages in the page cache</p> 77</td> 78</tr> 79<tr id="row18966641507"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p5966741706"><a name="p5966741706"></a><a name="p5966741706"></a>inactive file</p> 80</td> 81<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p17966174115018"><a name="p17966174115018"></a><a name="p17966174115018"></a>Number of inactive file pages in the page cache</p> 82</td> 83</tr> 84<tr id="row13183445101"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p318394514018"><a name="p318394514018"></a><a name="p318394514018"></a>pmm pages</p> 85</td> 86<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p1616375952018"><a name="p1616375952018"></a><a name="p1616375952018"></a><strong id="b161631659162014"><a name="b161631659162014"></a><a name="b161631659162014"></a>total</strong>: indicates the total number of physical pages. </p> 87<p id="p2029802122113"><a name="p2029802122113"></a><a name="p2029802122113"></a><strong id="b429822122113"><a name="b429822122113"></a><a name="b429822122113"></a>used</strong>: indicates the number of used physical pages. </p> 88<p id="p1218312452014"><a name="p1218312452014"></a><a name="p1218312452014"></a><strong id="b132798755433826"><a name="b132798755433826"></a><a name="b132798755433826"></a>free</strong>: indicates the number of free physical pages.</p> 89</td> 90</tr> 91</tbody> 92</table> 93 94
