Date: Tue, 20 Jun 2017 22:02:17 +0000 From: "Caza, Aaron" <Aaron.Caza@ca.weatherford.com> To: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org> Subject: Re: FreeBSD 11.1 Beta 2 ZFS performance degradation on SSDs Message-ID: <47a7d5714e3c4db4aacb6a65d82d8077@DM2PR58MB013.032d.mgd.msft.net>
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With regards to this issue, it's a case of the old FreeBSD 9.0 settings not working the same as in FreeBSD 10 & 11: the ZFS ARC min & max settings I was utilizing were too aggressive. On a separate server with 18 days of uptime, bumping vfs.zfs.arc_min and vfs.zfs.arc_max up to something more reasonable sans reboot restored performance. Apologies for the noise and thanks for the suggestions. -- Aaron This message may contain confidential and privileged information. If it has been sent to you in error, please reply to advise the sender of the error and then immediately delete it. If you are not the intended recipient, do not read, copy, disclose or otherwise use this message. The sender disclaims any liability for such unauthorized use. PLEASE NOTE that all incoming e-mails sent to Weatherford e-mail accounts will be archived and may be scanned by us and/or by external service providers to detect and prevent threats to our systems, investigate illegal or inappropriate behavior, and/or eliminate unsolicited promotional e-mails (spam). This process could result in deletion of a legitimate e-mail before it is read by its intended recipient at our organization. Moreover, based on the scanning results, the full text of e-mails and attachments may be made available to Weatherford security and other personnel for review and appropriate action. If you have any concerns about this process, please contact us at dataprivacy@weatherford.com.
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