Date: Wed, 3 Jul 2019 16:33:21 +0200 From: David Demelier <markand@malikania.fr> To: freebsd-questions@freebsd.org Subject: Re: extremely slow disk I/O after updating to 12.0 Message-ID: <b75ce0e3-9e29-f944-fc0c-823c987820ce@malikania.fr> In-Reply-To: <5adc029e-198c-5189-cd6c-4fff1e4980f0@bytecamp.net> References: <b76b814f-e440-67a9-5424-4e7c5d03d5ca@malikania.fr> <5adc029e-198c-5189-cd6c-4fff1e4980f0@bytecamp.net>
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Le 03/07/2019 à 13:43, Robert Schulze a écrit : > we have seen a drop in I/O performance beginning with 11.2-RELEASE. > Try disabling scattered ABD: > > sysctl vfs.zfs.abd_scatter_enabled=0 Thanks for the answer. I'm trying this. Is this tunable available at boot (i.e. /boot/loader.conf) or do you put it in /etc/sysctl.conf? Regards, -- David
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