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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Dear all,<br>
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My name is Mengxing Cheng and I am a HPC system administrator at the University of Chicago. We have a GSS26 running gss2.5.10.3-3b and gpfs-4.2.0.3.
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Recently, we run mmfsck on a relatively small filesystem with 14TB block and 73863102 inodes but it was unusually slow so as to not be able to finish in 48 hours. In contrast, mmfsck run on a filesystem with the same size and inodes but sitting on a traditional
IBM DS3512 storage took only 2 hours to complete. <br>
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In particular, the mmfsck run in parallel using 3 nodes within the GSS storage cluster, we notice that one gss storage server scans inodes much slower than the other gss storage server and the quorum service node.
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Has anyone experience the same mmfsck performance issue? <br>
Could anyone make recommendation to troubleshoot and improve mmfsck performance?
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Thank you!<br>
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Mengxing<br>
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<div><font size="1">Mengxing Cheng, Ph.D. </font></div>
<div><font size="1">HPC System Administrator</font></div>
<div><font size="1">Research Computing Center</font></div>
<div><font size="1">The University of Chicago</font></div>
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<div><font size="1">5607 S. Drexel Ave.</font></div>
<div><font size="1">Chicago, IL 60637</font></div>
<div><font size="1">email: mxcheng@uchicago.edu</font></div>
<div><font size="1">phone: (773) 702-4070</font></div>
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