Mark Booth

287 reputation

bio	website	anang.com
	location	Oxford, United Kingdom
	age	42
visits	member for	3 years, 6 months
	seen	May 21 at 8:44
stats	profile views	44

I'm a geek, a role-player and a biker.

I work for Diamond Light Source, developing open source scientific software for the UK national synchrotron facility. In the past I have worked in the robotics, mechatronics and laser micro-machining industries.

	287 reputation	bio	website	anang.com	visits	member for	3 years, 6 months
29 badges		location	Oxford, United Kingdom		seen	May 21 at 8:44

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Jan 9	comment	Linux - Is there any way to identify the speed of your memory through software? @pgs - Synchronous Dram doesn't work like that. All chips are accessed in parallel. It is more likely that this 30ns is the total time to access the first word, taking into account row and column address latencies. Even if it takes a total of 30ns to access the first word, subsequent words should come out much faster. Modern CPU's spend a lot of effort hiding such latencies using cache, branch prediction and other optimisations.
Jan 3	comment	Convert a hard-drive into a VMWare machine If this method doesn't work and the VM bluescreens on starting (as with the laptop and desktop I tried this procedure on) then you might want to try my suggestion, based on Dave M's suggestion.
Jan 2	comment	Convert a hard-drive into a VMWare machine Thanks DaveM, this was the solution I went with in the end, I've provided a full procedure and some updated links in my answer.
Jan 2	comment	Convert a hard-drive into a VMWare machine Have you done this with any more recent operating system? I've tried this on two different Windows XP machines (one a desktop, one a laptop) and it just results in a VM which blue screens on boot.
Dec 26	comment	Reset Windows 7 computer to a clean state on reboot @sq33G - It takes so little effort to provide a quote though, that it is disappointing when someone doesn't bother.
Nov 9	comment	How dangerous is a wet server room floor In the UK, you might mention it to your boss, but you have a legal responsibility to report it to a company Health and Safety representative.
Nov 9	comment	How dangerous is a wet server room floor In the UK you can be considered professionally negligent if you don't report Health and Safety problem that you notice. Once you've reported it to your H&S representative (which every company must have, if it has employees IIRC) then you can relax as it's no longer your responsibility/liability.
Sep 15	comment	Keeping a linux process running after I logout @rahmanisback - Remember that you can change your accepted answer at any time. Just because so far EricA's answer is voted most highly doesn't mean it's the best answer for you, indeed making it your accepted answer may well encourage more people to vote it up as a good answer.
Sep 15	comment	Keeping a linux process running after I logout I like this answer as it provides a solution for both interactive and non-interactive situations. In the interactive case, `screen` gives you a lot more options, but if you are using `authorized_keys` to allow people to run a script remotely via `ssh`, the `nohup` option is a nice simple way for the script to start processes which last longer than the `ssh` session used to start them.
Aug 15	comment	Which RAID Level Should We Run For Virtual Machine Storage Just how many Virtual machines are you expecting to service? How much bandwidth do they need? What are the expected number of IO operations per second? Without this information the answers here are pretty meaningless. If you are serving a few VMs with high bandwidth requirements, one big RAID 10 array might be best. If you are serving 50 VMs with more emphasis on IOps, load balancing them over six 2 drive RAID 1 arrays might be more appropriate.
Jul 22	comment	Unity under Ubuntu 11.04 in VMware Workstation @Kyle - Would you care to explain how? That is, after all, what this question is about. You would certainly get my +1 if you could actually answer the question.
Jul 8	comment	APC Smart-UPS Amps - How many amps does it use all by itself? @John - Alternatively, you could have just looked at the web page caleban linked to!
Jul 8	comment	APC Smart-UPS Amps - How many amps does it use all by itself? @John - From Wikipedia: NEMA L5 connectors are a series of locking connectors with a maximum specified voltage of 125 V. Supply connections are intended to be single-pole hot-neutral-ground circuits with a nominal voltage of 120 V RMS.
Nov 11	comment	Configure Windows XP Embedded to automatically dismiss unexpected MessageBoxes More recent versions of VNC, such as UltraVNC and NX support many more options for optimisating the connection. From High bandwidth, low latency, low cpu usage for use on a LAN, to High compression, high cpu usage for use over slow internet links.