Date: Mon, 21 Jan 2019 21:09:41 +0900 (JST) From: Yasuhiro KIMURA <yasu@utahime.org> To: freebsd-questions@freebsd.org Subject: Performance degradation of ZFS? Message-ID: <20190121.210941.2275299827563542964.yasu@utahime.org>
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Hello, Last month I upgraded my home server from 11.2-RELEASE to 12.0-RELEASE. It is ZFS only system. After making full data backup with tar(1) I made clean install of 12.0-RELEASE and restored backuped data. Then there is significant improvement of I/O performance. Is it possible that I/O performance degrade while using ZFS for a long time? And if answer is yes is there any way to recover performance without making full backup and restore? Best Regards. --- Yasuhiro KIMURA
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