From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <5396E511.9090504@yahoo.fr> Date: Tue, 10 Jun 2014 12:59:29 +0200 From: Nicolas Bercher User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Icedove/24.0 MIME-Version: 1.0 To: 9fans@9fans.net References: <20140608070355.A8B9DB827@mail.bitblocks.com> <7079be645c14ed97b4fea23029d25283@brasstown.quanstro.net> <20140608165601.19C4DB827@mail.bitblocks.com> In-Reply-To: <20140608165601.19C4DB827@mail.bitblocks.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [9fans] Question about fossil Topicbox-Message-UUID: f94b345a-ead8-11e9-9d60-3106f5b1d025 On 08/06/2014 18:56, Bakul Shah wrote: > On Sun, 08 Jun 2014 03:56:24 EDT erik quanstrom wrote: >>> - try this out on a small scale before you commit to it, as I >>> suspect you'll run into various limits and may be bugs. Do >>> report what you discover. >>> - performance will likely be poor. For better performance you >>> may want to keep venti index on a separate (flash) disk. >>> - it would be nice if you can come up with a workable setup >>> for a venti server! >> >> usb performance is ~4-7MB/s. this is the best you can hope for >> from the disk. venti will only slow this down by multiplying >> disk accesses and being a bit seeky. keep in mind if you're >> using this for a venti server, that usb b/w needs to be shared >> with tcp. > > The last time I measured this (Aug 2012) raw disk write was > 10MB/s, file writes were 2MB/s. On the same h/w & disk linux > got 25MB/s (don't recall file throughput). And Linux gets > 11.3MB/s ethernet throughput compared 3.7MB/s on 9pi (both > with ttcp). Linux tcp throughput is close to linespeed. The R-Pi gave me poor results when copying files from the network to a usb disk (something around 4MB/s). As Erik mentioned it, all is usb... I think the R-Pi is not a valuable device for data storage (Linux or Plan 9). I'd prefer to use it as a 24/7 terminal, given its low power consumption. Nicolas