Date: Mon, 26 Apr 2010 10:20:53 +0100 From: Thomas Sparrevohn <Thomas.Sparrevohn@btinternet.com> To: freebsd-questions@freebsd.org Subject: Re: ZFS scheduling Message-ID: <201004261020.53593.Thomas.Sparrevohn@btinternet.com> In-Reply-To: <y2qcf9b1ee01004251503jb4791869i9a812fade17a0558@mail.gmail.com> References: <y2qcf9b1ee01004251503jb4791869i9a812fade17a0558@mail.gmail.com>
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On Sunday 25 April 2010 23:03:53 Dan Naumov wrote: In regards to vfs.zfs.vdev.max_pending - I seem to recall it is set to 35 to avoid using up all bandwidth in the IO subsystem - would it not make more sense to match the NCQ/TCQ values as default? E.g. 32 or lower for AHCI - don't know what it would be for TCQ?
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