pgbench_sync_commit_on.htm

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Filename: pgbench_sync_commit_on.htm
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Part: 1
Message: Re: [WIP] Performance Improvement by reducing WAL for Update Operation
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  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
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 <tr height=17 style='height:12.75pt'>
  <td height=17 class=xl6731956 colspan=4 style='height:12.75pt'>one varchar
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  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
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 <tr height=17 style='height:12.75pt'>
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  <td class=xl6531956>Base records</td>
  <td class=xl6531956 align=right style='border-left:none'>1000000</td>
  <td class=xl6531956 style='border-left:none'>fill factor</td>
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 <tr height=17 style='height:12.75pt'>
  <td height=17 class=xl6331956 style='height:12.75pt;border-top:none;
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  <td class=xl6331956 style='border-top:none;border-left:none'>Total</td>
  <td class=xl6331956 style='border-top:none;border-left:none'>TPS</td>
  <td class=xl6331956 style='border-top:none;border-left:none'>Total</td>
  <td class=xl6331956 style='border-top:none;border-left:none'>TPS</td>
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  <td class=xl6531956 align=right style='border-top:none;border-left:none'>261</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>157665</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>9.663866</td>
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  <td class=xl6531956 style='border-top:none'>ckpt seg</td>
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  <td height=17 class=xl6431956 style='height:12.75pt;border-top:none'>Avg</td>
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  <td class=xl6531956 align=right style='border-top:none;border-left:none'>145087.3</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>267.6667</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>161345</td>
  <td class=xl6631956 align=right style='border-top:none;border-left:none'>11.83844</td>
  <td class=xl6631956 align=right style='border-top:none;border-left:none'>11.20543</td>
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  <td class=xl6531956 style='border-top:none'>wal page size</td>
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  <td class=xl6531956 style='border-top:none;border-left:none'>&nbsp;</td>
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  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
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 </tr>
 <tr height=17 style='height:12.75pt'>
  <td height=17 class=xl1531956 style='height:12.75pt'></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
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  <td class=xl1531956></td>
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 <tr height=17 style='height:12.75pt'>
  <td height=17 class=xl1531956 style='height:12.75pt'></td>
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 </tr>
 <tr height=17 style='height:12.75pt'>
  <td height=17 class=xl1531956 style='height:12.75pt'></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
  <td class=xl1531956></td>
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  <td class=xl1531956></td>
  <td class=xl1531956></td>
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 </tr>
 <tr height=17 style='height:12.75pt'>
  <td rowspan=2 height=34 class=xl6931956 style='border-bottom:.5pt solid black;
  height:25.5pt'>pgbench<span style='mso-spacerun:yes'>&nbsp;</span></td>
  <td colspan=2 class=xl7131956 style='border-right:.5pt solid black;
  border-left:none'>old code</td>
  <td colspan=2 class=xl7131956 style='border-right:.5pt solid black;
  border-left:none'>Modified code</td>
  <td colspan=2 class=xl7131956 style='border-right:.5pt solid black;
  border-left:none'>Difference(%)</td>
  <td class=xl1531956></td>
  <td class=xl6531956>Base records</td>
  <td class=xl6531956 align=right style='border-left:none'>1000000</td>
  <td class=xl6531956 style='border-left:none'>fill factor</td>
  <td class=xl6531956 align=right style='border-left:none'>80</td>
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 <tr height=17 style='height:12.75pt'>
  <td height=17 class=xl6331956 style='height:12.75pt;border-top:none;
  border-left:none'>TPS</td>
  <td class=xl6331956 style='border-top:none;border-left:none'>Total</td>
  <td class=xl6331956 style='border-top:none;border-left:none'>TPS</td>
  <td class=xl6331956 style='border-top:none;border-left:none'>Total</td>
  <td class=xl6331956 style='border-top:none;border-left:none'>TPS</td>
  <td class=xl6331956 style='border-top:none;border-left:none'>Total</td>
  <td class=xl1531956></td>
  <td class=xl6531956 style='border-top:none'>update</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>15</td>
  <td class=xl6531956 style='border-top:none;border-left:none'>shared buffers</td>
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  <td height=17 class=xl6431956 style='height:12.75pt;border-top:none'>Run1</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>241</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>146070</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>257</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>154451</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>6.639004</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>5.73766</td>
  <td class=xl1531956></td>
  <td class=xl6531956 style='border-top:none'>record size</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>1800</td>
  <td class=xl6531956 style='border-top:none;border-left:none'>update size</td>
  <td class=xl6831956 style='border-top:none;border-left:none'>&lt;50</td>
 </tr>
 <tr height=17 style='height:12.75pt'>
  <td height=17 class=xl6431956 style='height:12.75pt;border-top:none'>Run2</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>245</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>148590</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>269</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>163266</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>9.795918</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>9.876842</td>
  <td class=xl1531956></td>
  <td class=xl6531956 style='border-top:none'>threads</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>8</td>
  <td class=xl6531956 style='border-top:none;border-left:none'>clients</td>
  <td class=xl6831956 style='border-top:none;border-left:none'>16</td>
 </tr>
 <tr height=17 style='height:12.75pt'>
  <td height=17 class=xl6431956 style='height:12.75pt;border-top:none'>Run3</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>231</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>139062</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>247</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>149527</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>6.926407</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>7.52542</td>
  <td class=xl1531956></td>
  <td class=xl6531956 style='border-top:none'>ckpt seg</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>256</td>
  <td class=xl6531956 style='border-top:none;border-left:none'>ckpt interval</td>
  <td class=xl6831956 style='border-top:none;border-left:none'>15min</td>
 </tr>
 <tr height=17 style='height:12.75pt'>
  <td height=17 class=xl6431956 style='height:12.75pt;border-top:none'>Avg</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>239</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>144574</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>257.6667</td>
  <td class=xl6531956 align=right style='border-top:none;border-left:none'>155748</td>
  <td class=xl6631956 align=right style='border-top:none;border-left:none'>7.810321</td>
  <td class=xl6631956 align=right style='border-top:none;border-left:none'>7.728914</td>
  <td class=xl1531956></td>
  <td class=xl6531956 style='border-top:none'>wal page size</td>
  <td class=xl6831956 style='border-top:none;border-left:none'>2K</td>
  <td class=xl6531956 style='border-top:none;border-left:none'>&nbsp;</td>
  <td class=xl6531956 style='border-top:none;border-left:none'>&nbsp;</td>
 </tr>
 <![if supportMisalignedColumns]>
 <tr height=0 style='display:none'>
  <td width=64 style='width:48pt'></td>
  <td width=94 style='width:71pt'></td>
  <td width=64 style='width:48pt'></td>
  <td width=64 style='width:48pt'></td>
  <td width=64 style='width:48pt'></td>
  <td width=64 style='width:48pt'></td>
  <td width=64 style='width:48pt'></td>
  <td width=64 style='width:48pt'></td>
  <td width=84 style='width:63pt'></td>
  <td width=64 style='width:48pt'></td>
  <td width=88 style='width:66pt'></td>
  <td width=64 style='width:48pt'></td>
 </tr>
 <![endif]>
</table>

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