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<div>Hello,</div>
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<div>We encountered a problem with performance of writes on GPFS when the application uses direct io access. To simulate the issue it is enough to run fio with option direct=1. The performance drop is quite dramatic - 250 MiB/s vs. 2955 MiB/s. We've tried to
instruct GPFS to ignore direct IO by using "disableDIO=yes". The directive didn't have any effect. Is there any possibility how to achieve that GPFS would ignore direct IO requests and use caching for everything?</div>
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<pre>-- <br></pre>
<div style="font-size: 9pt; color: rgb(89, 89, 89); font-family: verdana;">S přáním pěkného dne / Best regards</div>
<br style="caret-color: rgb(46, 52, 54); color: rgb(46, 52, 54);">
<div style="font-size: 11pt; color: rgb(220, 38, 30); font-family: verdana;"><b>Mgr. Peter Hruška</b><br>
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