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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">there’s the Data on MDT feature which does exactly this. See Chapter 20 of the Lustre manual; quote:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt;text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:"Times New Roman",serif;mso-fareast-language:DE">The Lustre Data on MDT (DoM) feature improves small file IO by placing small files directly<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt;text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:"Times New Roman",serif;mso-fareast-language:DE">on the MDT, and also improves large file IO by avoiding the OST being affected by small<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt;text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:"Times New Roman",serif;mso-fareast-language:DE">random IO that can cause device seeking and hurt the streaming IO performance. Therefore,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Times New Roman",serif;mso-fareast-language:DE">users can expect more consistent performance for both small file IO and mixed IO patterns.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Times New Roman",serif;mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Times New Roman",serif;mso-fareast-language:DE">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Times New Roman",serif;mso-fareast-language:DE">Knut</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Von:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> lustre-discuss <lustre-discuss-bounces@lists.lustre.org>
<b>Im Auftrag von </b>??? via lustre-discuss<br>
<b>Gesendet:</b> Dienstag, 28. </span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">Februar 2023 04:29<br>
<b>An:</b> lustre-discuss@lists.lustre.org<br>
<b>Betreff:</b> [lustre-discuss] About optimize the performance on small files<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black">Hi~<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black">About version 2.15.2 of Lustre. Is there any way to optimize the performance on small files?<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black">Thanks and regards</span><span lang="ZH-CN" style="font-size:10.5pt;color:black">！</span><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black"><o:p></o:p></span></p>
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