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<p class=MsoNormal>Hi,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have been running some write only benchmarks on Lustre
with following two versions at two different machines. <o:p></o:p></p>
<p class=MsoNormal>lustre: 1.6.6<o:p></o:p></p>
<p class=MsoNormal>build:
1.6.6-19691231180000-PRISTINE-.usr.src.linux-2.6.18-92.1.10.el5_lustre.1.6.6smp-perfctr<o:p></o:p></p>
<p class=MsoNormal>Configuration: 1 OSS for 11 OST.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>lustre: 1.6.5<o:p></o:p></p>
<p class=MsoNormal>build:
1.6.5-2.1.50HDB_PS13A-rsrel-REL_2_1_50-19575-2009-11-13-18:58<o:p></o:p></p>
<p class=MsoNormal>Configuration: 1 OSS for 2 OST<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have noticed that if contiguous data is written to the
OSTs under one OSS then some performance benefit is achieved. Is there any
caching, aggregation or other optimization implemented in OSS for write
accesses? I understand that there is read caching but I could not get much
information about write optimization on OSS.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal>Arifa.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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