Date: Wed, 10 Feb 2010 11:40:03 +1100 From: Emil Mikulic <emikulic@gmail.com> To: "Peter C. Lai" <peter@simons-rock.edu> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: hardware for home use large storage Message-ID: <20100210004003.GA2507@dmr.ath.cx> In-Reply-To: <20100209163155.GK4648@cesium.hyperfine.info> References: <4B6F9A8D.4050907@langille.org> <alpine.OSX.2.00.1002090103520.982@hotlap.local> <2e027be01002090451w2b4506a0ofb5ab55c647540a@mail.gmail.com> <a586d9acd7436f3fdab4f88114309aef.squirrel@nyi.unixathome.org> <2e027be01002090609y28be404dl1bb610d047b15f9b@mail.gmail.com> <f6a0ed0187f2e747696805773154cad9.squirrel@nyi.unixathome.org> <2e027be01002090716y77213c45pb937e22151a2c238@mail.gmail.com> <20100209163155.GK4648@cesium.hyperfine.info>
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On Tue, Feb 09, 2010 at 11:31:55AM -0500, Peter C. Lai wrote: > Also does anybody know if benching dd if=/dev/zero onto a zfs volume that > has compression turned on might affect what dd (which is getting what it > knows from vfs/vmm) might report? Absolutely! Compression on: 4294967296 bytes transferred in 16.251397 secs (264282961 bytes/sec) 4294967296 bytes transferred in 16.578707 secs (259065276 bytes/sec) 4294967296 bytes transferred in 16.178586 secs (265472353 bytes/sec) 4294967296 bytes transferred in 16.069003 secs (267282747 bytes/sec) Compression off: 4294967296 bytes transferred in 58.248351 secs (73735432 bytes/sec)
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