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<div id="pgbench_26196" align=center x:publishsource="Excel">
<table border=0 cellpadding=0 cellspacing=0 width=540 style='border-collapse:
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<col width=64 span=5 style='width:48pt'>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6626196 width=121 style='height:12.75pt;width:91pt'>Machine
details</td>
<td class=xl1526196 width=99 style='width:74pt'></td>
<td class=xl1526196 width=64 style='width:48pt'></td>
<td class=xl1526196 width=64 style='width:48pt'></td>
<td class=xl1526196 width=64 style='width:48pt'></td>
<td class=xl1526196 width=64 style='width:48pt'></td>
<td class=xl1526196 width=64 style='width:48pt'></td>
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<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt'>CPU</td>
<td class=xl6826196 style='border-left:none'>8 core</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
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<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>OS</td>
<td class=xl6826196 style='border-top:none;border-left:none'>suse linux 10.3</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>RAM</td>
<td class=xl6826196 style='border-top:none;border-left:none'>24GB</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl1526196 style='height:12.75pt'></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6626196 colspan=2 style='height:12.75pt'>Server
Configuration</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt'>sync commit</td>
<td class=xl6826196 style='border-left:none'>off</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>shared
buffers</td>
<td class=xl6826196 style='border-top:none;border-left:none'>1GB</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>ckpt
segments</td>
<td class=xl6826196 style='border-top:none;border-left:none'>256</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>ckpt
interval</td>
<td class=xl6826196 style='border-top:none;border-left:none'>15Min</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl1526196 style='height:12.75pt'></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6626196 colspan=2 style='height:12.75pt'>Pgbench tcp_b
benchmark suite</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt'>threads</td>
<td class=xl6526196 align=right style='border-left:none'>8</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>clients</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>16</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>scale</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>75</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>fill
factor</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>100</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>only
update</td>
<td class=xl6826196 style='border-top:none;border-left:none'>No</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>one
record size</td>
<td class=xl6826196 style='border-top:none;border-left:none'>120 bytes</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6526196 style='height:12.75pt;border-top:none'>update
column size</td>
<td class=xl6826196 style='border-top:none;border-left:none'>4 bytes</td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl1526196 style='height:12.75pt'></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl1526196 style='height:12.75pt'></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
<td class=xl1526196></td>
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<tr height=17 style='height:12.75pt'>
<td rowspan=2 height=34 class=xl7026196 style='border-bottom:.5pt solid black;
height:25.5pt'>pgbench<span style='mso-spacerun:yes'> </span></td>
<td colspan=2 class=xl7226196 style='border-right:.5pt solid black;
border-left:none'>old code</td>
<td colspan=2 class=xl7226196 style='border-right:.5pt solid black;
border-left:none'>Modified code</td>
<td colspan=2 class=xl7226196 style='border-right:.5pt solid black;
border-left:none'>Difference(%)</td>
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<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6426196 style='height:12.75pt;border-top:none;
border-left:none'>TPS</td>
<td class=xl6426196 style='border-top:none;border-left:none'>Total</td>
<td class=xl6426196 style='border-top:none;border-left:none'>TPS</td>
<td class=xl6426196 style='border-top:none;border-left:none'>Total</td>
<td class=xl6426196 style='border-top:none;border-left:none'>TPS</td>
<td class=xl6426196 style='border-top:none;border-left:none'>Total</td>
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<td height=17 class=xl6326196 style='height:12.75pt;border-top:none'>Run1</td>
<td class=xl6926196 align=right style='border-top:none;border-left:none'>7290</td>
<td class=xl1526196 align=right>4378475</td>
<td class=xl6526196 align=right style='border-top:none'>8298</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>4984243</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>13.82716</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>13.83514</td>
</tr>
<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6326196 style='height:12.75pt;border-top:none'>Run2</td>
<td class=xl6526196 align=right style='border-left:none'>7614</td>
<td class=xl6526196 align=right style='border-left:none'>4571083</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>8815</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>5292404</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>15.77357</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>15.78009</td>
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<tr height=17 style='height:12.75pt'>
<td height=17 class=xl6326196 style='height:12.75pt;border-top:none'>Run3</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>7797</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>4688831</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>8550</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>5156011</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>9.657561</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>9.963678</td>
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<td class=xl6526196 align=right style='border-top:none;border-left:none'>7567</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>4546130</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>8554.333</td>
<td class=xl6526196 align=right style='border-top:none;border-left:none'>5144219</td>
<td class=xl6726196 align=right style='border-top:none;border-left:none'>13.04788</td>
<td class=xl6726196 align=right style='border-top:none;border-left:none'>13.15602</td>
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