Date: Sun, 06 Jun 2010 12:49:47 +0200 From: Adam PAPAI <wooh@wooh.hu> To: freebsd-questions@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: sysbench / fileio - Linux vs. FreeBSD Message-ID: <4C0B7D4B.4080402@wooh.hu> In-Reply-To: <AANLkTimtEjQp32LOO-YDW1eBACJMJWGxT4YnrnV39fkp@mail.gmail.com> References: <4C09932B.6040808@wooh.hu> <AANLkTimtEjQp32LOO-YDW1eBACJMJWGxT4YnrnV39fkp@mail.gmail.com>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 6/5/10 2:43 AM, Igor Mozolevsky wrote: > On 5 June 2010 00:58, Adam PAPAI <wooh@wooh.hu> wrote: > >> How can I tune my disk to make it faster? Is it possible? What is the >> reason of the really slow I/O with more than 4 threads? What do you >> recommend me to do? Why is it damn slow with 8K blocksize? > > Does linux still have async disk writes by default? Anyway, I looked after the default ext3 values: Debian mounts the ext3 with "defaults" option. This means: rw, suid, dev, exec, auto, nouser, and async. Well it means I have to test it with UFS (async) and Debian (sync). These test will take some time but I hope it worth the effort. Hm... - -- Adam PAPAI -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJMC31LAAoJEGq0EWvh5uiIu3MH/i7KWfcYj2zXSsqbUK2W4dKi B0+pD861FBtxmS+O4c4jzR5vJYeVVyVfZ4DLpHs0tqr6u2QZWgTD5c9GXxRNn9Hg pVIL8/iL9BGtjNZdbjKU2RlE+QOb4LUuxqTWtz3poH4e6CQlAMOzvBcmbK41eWVn nr2/jlS8n7TFk74ewAH9NXABrhIaOtCjBf5YWWA9AnKhqjdlAM7gxC6QcbsGTLlR 5zvq6UfGuAMECOV98FDlm3k20LydLT0/Mdw9jth9+50v1NMnAddYjfZ/7Ci2KzZo uUN1VRcOhxmw6oliMPu/+Z324d6Xrp1vXpDQN8tSzME1d3O3CswPDfs3ocpjmkU= =VEsH -----END PGP SIGNATURE-----
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