Date: Wed, 12 Aug 2009 08:04:34 -0400 From: Bill Moran <wmoran@collaborativefusion.com> To: grarpamp <grarpamp@gmail.com> Cc: freebsd-performance@freebsd.org Subject: Re: RELENG_7 heavy disk = system crawls Message-ID: <20090812080434.addbf0e0.wmoran@collaborativefusion.com> In-Reply-To: <d2e731a10908112153j6247994dibbbfad9429da9633@mail.gmail.com> References: <d2e731a10908112153j6247994dibbbfad9429da9633@mail.gmail.com>
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grarpamp <grarpamp@gmail.com> wrote: > > > cards aren't going to help with zfs. > > No, but for geli hifn(4) crypto(4)/(9), geli(8) might work > if aes-cbc is indeed the mode geli uses. See the source I guess. Note that only the most expensive cards are faster than a CPU. Unless you've got a very large budget, you'll get more bang for your buck out of adding CPUs to the unit. During crypto ops, the system will have a spare CPU to use to encrypt, and when not doing crypto ops, you have the added benefit of more processing power for apps. Additionally, support for FreeBSD is spotty. And we've seen cards that work in FreeBSD, but do so at far below their claimed throughput. There are apparently some inefficiencies in the drivers. -- Bill Moran Collaborative Fusion Inc. wmoran@collaborativefusion.com Phone: 412-422-3463x4023 **************************************************************** IMPORTANT: This message contains confidential information and is intended only for the individual named. If the reader of this message is not an intended recipient (or the individual responsible for the delivery of this message to an intended recipient), please be advised that any re-use, dissemination, distribution or copying of this message is prohibited. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission. ****************************************************************
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