[Fwd: Re: [SLUG] IOWait definition]
I have a machine with a good proportion of IOWait 20-30%. It does have local disks and it performs operations on NFS mounts. I just wanted to be sure if IOWait includes NFS activity or not. I also want a way if it is NFS to be able to say for sure if it is a bottleneck on the nfs client or server. NFS is not a linux machine so visibility is not allways the best. Grant Daniel Pittman wrote: Grant Street [EMAIL PROTECTED] writes: I was wondering if someone could point me in the right direction for some doco? I don't know of any, but ... I'm finding it hard to get a definition of what constitutes IOWait. I know that IOwait is CPU time waiting for IO to happen to physical local disks, but I'm unsure about the following scenarios and if they contribute to IOWait: Not quite. IOWait is a *software* state, indicating that a process or thread is blocked waiting for I/O to complete. This is different from CPU time waiting for ... in that it implies the software is making no progress, but *NOT* that your CPU is spending cycles working on it.[1] - CPU time waiting for an NFS read/write to occur Yes, along with more or less any other disk I/O that happens to be run over the network -- as long as it is synchronous, and something is waiting on it. - CPU time waiting for a network buffer to be read/written to. eg waiting for a full buffer to clear. Generally not. I am not certain about blocking on a full buffer condition for sending data, but not for blocking while reading. - Anything else?? Any other synchronous disk I/O, certainly. Probably certain other, related, conditions where the kernel developers feel that the process is blocked on I/O. PS. How do you set/query the network buffers in Linux? Via the socket fcntl / ioctl interface, or via the sysctls in /proc/sys/net, which are documented in the standard Linux kernel sysctl documentation. All that said, you might want to tell us why you are asking, not just what, since I suspect there is a question about why you have so much IOWait time on your system, or poor performance? Regards, Daniel Footnotes: [1] It does, technically, spend a few in terms of submitting and completing the I/O before it wakes up the blocked process, and various I/O devices need babysitting, but the principal is sound. ;) Animal Logic http://www.animallogic.com Please think of the environment before printing this email. This email and any attachments may be confidential and/or privileged. If you are not the intended recipient of this email, you must not disclose or use the information contained in it. Please notify the sender immediately and delete this document if you have received it in error. We do not guarantee this email is error or virus free. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] Requesting IPv6 address space
G'day SLUG, I'm a small-time WordPress hacker, Linux user, and Cert IV IT student that has recently got interested in IPv6. Currently, I'm setting up (read: breaking) our home network with some random address space I've stolen by making up the numbers. Obviously, our home network is non-routable from the Internet. I'd actually like to get my hands on a small chunk of address space that I could play with and make my own. Unfortunately, according to the APNIC website: If my organisation becomes a member, will there be any other charges for IP addresses? - The first time a member requests IP address space, there is a one time only IP resource application fee of AU$3,169. $3,169 is $3,169 too much to just play around with IPv6. What I want is to find some kind of program that provides students with small chunks of addresses, but I don't really know where to start looking. Cheers, Jeremy. -- http://jeremy.visser.name/ -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Requesting IPv6 address space
ask on WhirlPool. I think getting your own addresses for permanent use will be expensive and likely technically unfeasible, but you should be able to get an ISP to sort you out with some. I know Internode's network is fully IPv6 compliant, but not everyone's is, so if you're looking to route to stuff you're doing at home then make sure your provider can handle it properly. On Wed, Oct 8, 2008 at 11:38 PM, Jeremy Visser [EMAIL PROTECTED] wrote: G'day SLUG, I'm a small-time WordPress hacker, Linux user, and Cert IV IT student that has recently got interested in IPv6. Currently, I'm setting up (read: breaking) our home network with some random address space I've stolen by making up the numbers. Obviously, our home network is non-routable from the Internet. I'd actually like to get my hands on a small chunk of address space that I could play with and make my own. Unfortunately, according to the APNIC website: If my organisation becomes a member, will there be any other charges for IP addresses? - The first time a member requests IP address space, there is a one time only IP resource application fee of AU$3,169. $3,169 is $3,169 too much to just play around with IPv6. What I want is to find some kind of program that provides students with small chunks of addresses, but I don't really know where to start looking. Cheers, Jeremy. -- http://jeremy.visser.name/ -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] atom processor
Both the 701 and 1000 series can run Breezy (Puppy Linux variant) from an SD card. Minimal desktop, but quite usable. Geoffrey -- Forwarded message -- From: Dion [EMAIL PROTECTED] To: slug@slug.org.au Date: Tue, 07 Oct 2008 16:19:08 +0800 Subject: Re: [SLUG] Atom Processor - what distro works? Osaka! I am envious! I believe, the latest kernels support the Atom processor very well. I can't see why a distro would need to explicitly support it. Any x86 distro should work, as long as the kernel recognises the atom. Are they selling the dual core atoms in mini-itx mobos now? Have fun. D. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Requesting IPv6 address space
On Wed, Oct 08, 2008, Jeremy Visser wrote: $3,169 is $3,169 too much to just play around with IPv6. What I want is to find some kind of program that provides students with small chunks of addresses, but I don't really know where to start looking. You could check with the tunnel brokers: http://en.wikipedia.org/wiki/List_of_IPv6_tunnel_brokers -Mary -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [Fwd: Re: [SLUG] IOWait definition]
Grant Street wrote: I have a machine with a good proportion of IOWait 20-30%. It does have local disks and it performs operations on NFS mounts. I just wanted to be sure if IOWait includes NFS activity or not. I also want a way if it is NFS to be able to say for sure if it is a bottleneck on the nfs client or server. NFS is not a linux machine so visibility is not allways the best. dstat might help you correlate stuff. http://dag.wieers.com/home-made/dstat/ dave -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Requesting IPv6 address space
On Thu, Oct 9, 2008 at 8:23 AM, Mary Gardiner [EMAIL PROTECTED] wrote: On Wed, Oct 08, 2008, Jeremy Visser wrote: $3,169 is $3,169 too much to just play around with IPv6. What I want is to find some kind of program that provides students with small chunks of addresses, but I don't really know where to start looking. You could check with the tunnel brokers: http://en.wikipedia.org/wiki/List_of_IPv6_tunnel_brokers -Mary If you only want internal addresses you could use a random /48 out fd00::5 (see rfc4193). -- Christopher Vance -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Requesting IPv6 address space
If you only want internal addresses you could use a random /48 out fd00::5 (see rfc4193). Oops, its /8. -- Christopher Vance -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Requesting IPv6 address space
Jeremy Visser [EMAIL PROTECTED] writes: I'm a small-time WordPress hacker, Linux user, and Cert IV IT student that has recently got interested in IPv6. Currently, I'm setting up (read: breaking) our home network with some random address space I've stolen by making up the numbers. Why on earth are you doing that rather than something sane, such as using the IP space deliberately and purposefully allocated for the purpose of operating private, non-routable networks? (Alternately, you might want to revisit how you present this so you /don't/ look like the goons who allocate random chunks of live Internet addressable space for their internal network, then complain that life is difficult because the Internet isn't fully accessible.) [...] I'd actually like to get my hands on a small chunk of address space that I could play with and make my own. Unfortunately, according to the APNIC website: If my organisation becomes a member, will there be any other charges for IP addresses? - The first time a member requests IP address space, there is a one time only IP resource application fee of AU$3,169. $3,169 is $3,169 too much to just play around with IPv6. So, do what you are supposed to do and obtain address space from your service provider. That means, right now, a tunnel broker -- the Internode broker, if you are their customer, or one of the other brokers. What I want is to find some kind of program that provides students with small chunks of addresses, but I don't really know where to start looking. Your ISP, since if you are too small to pay for your own address space you are to small to have it globally routed anyway. Regards, Daniel -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Comp TIA+ / CLP
Have you checked out Geoffrey Robinson at Grandville TAFE. His courses are not official TAFE courses so you wont find them on TAFE websites, but he manages to keep them cheap by having them as electrical engineering certificate courses. This means official TAFE cannot tell you about them. http://www.gonzo.edu.au/moodle/ has information. Ken Blindraven wrote: Some of the issues I am having is how much of any given subject in the LPI in a nutshell I need to know. It starts off with pretty intense Hardware stuff and I was under the impression that it was a different field altogether. I can see why it's relative but I certainly was not expecting it. A course would be my best option, one that doesn't cost me an arm and a leg. I.e one that does not yet exist. That, or someone/people that live close by that want to a form a study group. - I may just post this idea and hope there are those that are keen. Tony. On Fri, Sep 26, 2008 at 8:00 PM, Morgan Storey [EMAIL PROTECTED] wrote: Last I looked in my VUE page you can book the exams at any VUE testing centre too. On Fri, Sep 26, 2008 at 7:10 AM, Martin Visser [EMAIL PROTECTED] wrote: In order to sit for the LPIC 101 and 102 exams basically used the LPI Linux Certification in a Nutshell book from O'Reilly - http://oreilly.com/catalog/9780596005283/ as well as the exam prep material from https://www.lpi.org/eng/certification/the_lpic_program/lpic_1 Regards, Martin -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Comp TIA+ / CLP
On Thu, Oct 09, 2008, Ken Wilson wrote: http://www.gonzo.edu.au/moodle/ has information. That website is a full year out of date (it's about the 2007 courses). Anyone know what's up in 2008 and 2009? -Mary -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] Digital Media Festival Program
*Open Source at Digital Media Festival Program Rangi Sutton, Founder Kanuka Studio Kanuka Studio is an artist-owned and operated animation and visual effects boutique based in Brisbane, Australia, the only CG/VFX studio in Australia to specialise in the Houdini 3D pipeline. Hear about how Houdini and a variety of Free Open Source software are used to create an integrated environment from founder Rangi Sutton, a senior visual effects artist with a portfolio sourced at many studios around the globe.* http://www.digitalmedia.com.au/node/1168 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
