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luhuayi
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Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: luhuayi <luhuayi@huawei.com> Co-committed-by: luhuayi <luhuayi@huawei.com>
22 lines
2.5 KiB
HTML
22 lines
2.5 KiB
HTML
<a name="EN-US_TOPIC_0000001839621270"></a><a name="EN-US_TOPIC_0000001839621270"></a>
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<h1 class="topictitle1">Disk Caching</h1>
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<div id="body0000001839621270"><p id="EN-US_TOPIC_0000001839621270__p795965410271">The following parameters are supported only by clusters of version 9.1.0 or later.</p>
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<div class="section" id="EN-US_TOPIC_0000001839621270__section2974102195514"><h4 class="sectiontitle">enable_disk_cache</h4><p id="EN-US_TOPIC_0000001839621270__p11230144242617"><strong id="EN-US_TOPIC_0000001839621270__b1623084210266">Parameter description</strong>: Specifies whether to enable file caching. Setting this parameter to <strong id="EN-US_TOPIC_0000001839621270__b1145124171515">on</strong> only takes effect when <strong id="EN-US_TOPIC_0000001839621270__b2279141114611">enable_aio_scheduler</strong> is set to <strong id="EN-US_TOPIC_0000001839621270__b10287181511613">on</strong> and <strong id="EN-US_TOPIC_0000001839621270__b45760181666">obs_worker_pool_size</strong> is greater than or equal to 4.</p>
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<p id="EN-US_TOPIC_0000001839621270__p223094217265"><strong id="EN-US_TOPIC_0000001839621270__b494319371515">Type</strong>: USERSET</p>
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<p id="EN-US_TOPIC_0000001839621270__p19230204262616"><strong id="EN-US_TOPIC_0000001839621270__b1333114011515">Value range</strong>: Boolean</p>
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<p id="EN-US_TOPIC_0000001839621270__p62301642102613"><strong id="EN-US_TOPIC_0000001839621270__b093674218510">Default value</strong>: <strong id="EN-US_TOPIC_0000001839621270__b193713421352">off</strong></p>
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</div>
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<div class="section" id="EN-US_TOPIC_0000001839621270__section8813820155312"><h4 class="sectiontitle">enable_disk_cache_recovery</h4><p id="EN-US_TOPIC_0000001839621270__p975646125316"><strong id="EN-US_TOPIC_0000001839621270__b187584655315">Parameter description</strong>: Specifies whether file caching can be restored when the cluster is restarted.</p>
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<p id="EN-US_TOPIC_0000001839621270__p27594620535"><strong id="EN-US_TOPIC_0000001839621270__b105931539552">Type</strong>: USERSET</p>
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<p id="EN-US_TOPIC_0000001839621270__p775144665310"><strong id="EN-US_TOPIC_0000001839621270__b72711429520">Value range</strong>: Boolean</p>
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<p id="EN-US_TOPIC_0000001839621270__p17751446115311"><strong id="EN-US_TOPIC_0000001839621270__b125391244850">Default value</strong>: <strong id="EN-US_TOPIC_0000001839621270__b653911447513">off</strong></p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_04_0892.html">Resource Consumption</a></div>
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</div>
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</div>
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