Date: Fri, 21 Jan 2011 07:38:25 +0100 From: Thomas Steen Rasmussen <thomas@gibfest.dk> To: freebsd-fs@freebsd.org Subject: Re: Freebsd8.1 ZFS with mfi driver performance Message-ID: <4D3929E1.7070701@gibfest.dk> In-Reply-To: <AANLkTi=AkA0xaGJh4=pZXX5VU57aPsAKeBPQzrZj1zwJ@mail.gmail.com> References: <AANLkTi=AkA0xaGJh4=pZXX5VU57aPsAKeBPQzrZj1zwJ@mail.gmail.com>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 20-01-2011 14:57, jackie wang wrote: > hello ,I have a question.Sorry I have google a lot and have no answer. > I run freebsd 8.1 with zfs file system and mfi driver . > And my problem is when the system started , the speed is fast ,but > after one or two days the system began to slow . > My server main used as a web server ,the ram is 8G. Hello, Try checking if your problems fall inbetween "patrol read enabled" and "patrol read disabled" (should be logged in messages). I've recently disabled "patrol reads" (mfiutil patrol disable) on an MFI controller, as it was causing instability on a VirtualBox host, when the patrol read happened at the same time as heavy IO. Good luck with it! Best regards, Thomas Steen Rasmussen -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk05KeEACgkQGjEBQafC9MDl4QCeKWx5TDRdS4r5G1FYf1LWf5EH CNUAoIVxQGGQaMlO/Tb59nS5gcz4LurF =jCxS -----END PGP SIGNATURE-----
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