Date: Tue, 29 Nov 2016 17:30:54 +0500 From: "Eugene M. Zheganin" <emz@norma.perm.ru> To: freebsd-stable@freebsd.org Subject: Re: Sandisk CloudSpeed Gen. II Eco Channel SSD vs ZFS = we're in hell Message-ID: <583D74FE.8040402@norma.perm.ru> In-Reply-To: <553eff7a-0cd5-eea9-4acd-4bc770fa1baf@multiplay.co.uk> References: <345ed411-1430-50f7-6887-5ac00d259fd9@norma.perm.ru> <553eff7a-0cd5-eea9-4acd-4bc770fa1baf@multiplay.co.uk>
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Hi. On 28.11.2016 23:07, Steven Hartland wrote: > Check your gstat with -dp so you also see deletes, it may be that your > drives have a very slow TRIM. > Indeed, I see a bunch of delete operations, and when TRIM disabled my engineers report that the performance is greatly increasing. Is this it ? Eugene.
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