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• iTunes memory usage

  - by Jordan S. Jones

  Why does iTunes use upwards of 70 megs of ram when it is minimized to my system tray playing music? -- Update -- I understand that iTunes is a resource hog :) What I'm trying to find out, is what part of iTunes is using all that ram. Is it the music library? If I have a smaller music library, will it use less ram? Is it loading all the Album Artwork into ram for some dumb reason? Additionally, is there any recommendations on what someone could do to reduce the amount of ram it is using?

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• What can impact the throughput rate at tcp or Os level?

  - by Jimm

  I am facing a problem, where running the same application on different servers, yields unexpected performance results. For example, running the application on a particular faster server (faster cpu, more memory), with no load, yields slower performance than running on a less powerful server on the same network. I am suspecting that either OS or TCP is causing the slowness on the faster server. I cannot use IPerf , unless i modify it, because the "performance" in my application is defined as Component A sends a message to Component B. Component B sends an ACK to component A and ONLY then Component A would send the next message. So it is different from what IPerf does, which to my knowledge, simply tries to push as many messages as possible. Is there a tool that can look at OS and TCP configuration and suggest the cause of slowness?

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• nginx static file buffer

  - by Philip

  I have a nfs which several frontend-servers are connected to for making the files stored on the nfs available for http downloads. It looks like I have problems with the way apache is serving the files, there seems to be a very small buffer or no buffer at all which results in a lot disk seeks. I did some testing with loading the whole requested file into memory at once and serve it to the client from memory. With this technique I need less disk seeks for a download stream. Since I don't want to implement this by myself for production use I thought that I could maybe use nginx for that because the documentation says that it uses buffers for static file serving. Is it possible to increase the buffer size to a few mb, if so which config parameter do I have to change for this? Has anyone experience with large buffers for static file serving? Is there a better way to reduce disk seeks?

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• Access RAID configuration in x3550M2

  - by Mike B

  I'm trying to configure RAID in a IBM x3550 M2 server. I can't find any messages on boot about any hotkey to access the configuration utility. I wasn't able either in BIOS. The card is a on board LSI 1068e. I can't find the original CD's shipped with the server, but I downloaded Server Guide 9.21 from IBM web. Booted with that, and only getting stuck at "Windows loading"p. Tried with a 8.? version from a x3550 (M1), but it was less useful. Although I do not consider myself an expert, I'm starting to feel like a newbie luser. Any help?

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• Server Backup Solutions - compiling?

  - by Webnet

  I've been researching backup solutions for a LAMP environment to backup our databases and files alike. I'm looking for open source with a UI (so I'm less likely to screw it up). I downloaded http://www.bacula.org/en/ and a few others but they all talk about compiling first.... this doesn't seem like something I should need to do.... is there a linux package that maybe handles backups that I don't know about? I should also specify I'm looking to setup a backup server which backs up from several locations.

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• How do I join two worksheets in Excel as I would in SQL?

  - by Joel Coehoorn

  I have two worksheets in two different Excel files. They both contain a list of names and addresses. One is a master list that includes other fields, and the other is a list that only includes name and address and an id column that was pared down by another office. I want to use the 2nd list to filter the first. I know how I could do this very easily with a database inner join, but I'm less clear on how to do this efficiently in Excel. How can join two worksheets in Excel? Bonus points for showing how to do outer joins as well, and I would greatly prefer konwing how to do this without needing a macro.

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• recommendation for configuration for a multi-core guestOS

  - by reidLinden

  Hi there, I've just received an upgraded Host machine, and am looking to push some of those advances to my workstations Guest OS(s). In particular, I used to have a single processor, with 2 cores, so my guestOS only had 1/1. Now, I've got a single processor with 8 cores, so I'm curious about what would be recommended for my GuestOS now? 1 processor/4 cores? 2 processors/2Cores? 4 processors/1 core? My instinct says to stick with the number of physical processors (or less), but, is that based on reality? I spent a good while looking for an answer to this, but perhaps my google-karma isn't in my favor today. Suggestions?

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• Remote desktop Client versus Web based access to reports and limited data entry

  - by Voyager

  We have a requirement from management to give limited access of our Application to Distributors \ Dealers to look at their account statements in our books of account, enter their purchase requirements (sales order for us). We have given a few of them the RDC who connect to our terminal server and access the reports. This involves licensing of TS Client per each distributor. Is it more better, secure and less costly if a web based application is made to only enter the orders and retrive reports like pending orders, ledgers, receivables etc. Also which is more secure as far as database access is concerened...browser based access or RDC access. Please answer.

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• Is it possible to turn a shortcut to a folder into a menu of items in that folder?

  - by MrVimes

  I vaguely remember seeing something on the internet that showed it was possible to turn any shortcut to a folder into a menu, as long as that shortcut was in the start menu or on the quicklaunch bar (i.e. somewhere that allowed menu functionality) Does anyone know if this is possible? And if so, how to do it? I'd like to be able to do this... With a link in my quicklaunch area... I remember it had something to do with renaming the shortcut with along string of characters placed between '{' and '}'. I realize how picky this request is as I have more or less acheived what I am looking for by placing the 'desktop' toolbar on my start bar. But I'd rather it be an icon in my quicklaunch. Just humour me :)

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• How to move mail among Google Apps for Domains users

  - by Paul Roub

  Considering moving the domain used by my extended family for email to Google Apps. One less server for me to manage, better spam filtering, etc. One thing that's been nice about running my own has been the way I manage my kids' incoming email - it comes to me first, and I drop good mail in a symlinked IMAP folder that we share. A little procmail is all it takes, and straight-through exceptions are easy to implement. (FYI, no I'm not advocating censorship, but manually filtering spam and viruses from my 8-year-old's inbox seems like the right thing to do. YMMV) Anyway. I'm wondering if there's an easy way to do something similar in Google Apps - setting up filters to auto-redirect to me looks easy enough (any gotchas there?), but moving things back is not obvious. Yes, I could access both accounts via IMAP and drag mails across, but does anyone have an easier way?

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• Access denied errors in windows server 2008 for system administrator

  - by NLV

  Hello I've a HP Pavilion DV4 with windows Server 2008 R2 enterprise. My system is connected to a domain. I login using my domain account. I am the administrator for the local machine. But I'm getting access denied everywhere (file system, running commands, using visual studio..literally everywhere..) in my machine. What could be the problem? Any ideas? Please tell me if you need more information as I'm just a developer with less knowledge in system administration.

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• trouble loggin into a Mac share from a Windows PC on the network

  - by villares

  I have this mixed network and usually log into the Macs from the Windows XP home machines and vice versa. I have no real networking knowledge, things just seem to work, more or less, with the default settings. Now I've got a new Snow Leopard Mac with a shared folder (added the user names of the Windows users at the sharing preferences) and the trouble is some machines can open the share and others can't. I can't see the difference. It feels like some Windows machines have a "cache" and won't ask for the share password, just deny access. I can also see old shares proposed at the Windows "add network place wizard".

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• how to make a small image become really huge

  - by DennyHalim.com

  all webmaster should already know about hotlinking stuffs. and we know how to ban those bad referer too... but i want to get revenge... i want to replace the hotlinked images with one huge image with few megs in size. i have found one good image. yet it less than 100k. i already use it to replace all bad hotlinkers. how can i convert this image to become few megs?

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• How to achieve redundancy across data centers?

  - by BrandonBT

  I have a LAMP server with a lot of hardware redundancy built in. I am not worried about the server becoming unavailable. What I am worried about, however, are potential network issues in the data center the server is in. What I would like to have is another server in another data center for redundancy. Load balancing is less of a concern. With that said, I am relatively clueless on two points: How to have two servers in two geographically separate data centers that have exactly the same data, in terms of both files and MySQL databases. How to ensure that all traffic coming into one data center are automatically transferred to the other database in the case of a network or server failure at the first data center. Any guidance on how to accomplish the above two problems would be greatly appreciated.

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• Sharepoint 2010 reacts very badly to having it's IP address changed. How do I fix it?

  - by Jeff Sacksteder

  I have Sharepoint 2010 set up on a virtual host for prototyping various projects. If I restart the host, the IP changes. Afterwards, SP complains that it can't find it's configuration database. I can't find where it might be storing an IP. To clarify, the URL remains the same - I have a dynamic dns solution in place to handle that. I can't see anything in the web.config files or the database connection strings that would indicate a hardcoded IP. How can I fix this up in less time than re-installing every time I need to do a project?

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• people_dl_import shows millions of records

  - by amit lohogaonkar

  We have a situation now on prod in sharepoint 2007 based intranet platform and it shows thousands of records under people_dl_import category with format spsimport://?$$dl$$/domain1/domain2/domain3/ Also import was not stopping and added millions of records in database and was on verge of disk full. On other servers like dev we have very less data in this category and format is also like spsimport://doaminname?$$dl$$?... which is good and has only 6000 rows and in prod its 2 millions Crawled under people_dl_import category. I need to know the cause of this garbage data and how to fix it. I tried resetting content source and I will do full import in this weekend to see if this garbage data gets cleared. Any idea on cause for thiss issue?

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• Proccess of carrying out a BER Test

  - by data

  I am subscribed to an ISP supplying a 3meg ADSL line. Lately (for the last 4 weeks) speeds have dropped from the usual average downstream speed of ~250kbps to just 0.14Mbps (according to speedtest.net) and employees are complaining about lack of access to the server. I have been calling customer support and logging calls for the last 3 weeks, but they have been unable to determine the source of the problem other carrying out a few bitstream tests and checking the DHCP renewal times. I am going to call back and suggest carrying out a BER test. What type of equipment is needed to carry out this test? I have access to a wide range of Cisco networking equipment. Other: We dont need a leased line as there are less than ten employees.

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• How to make a quiet laptop ? [closed]

  - by psihodelia

  Most modern laptops have very noisy fans. I am looking for a quiet laptop or a small stationary computer which has all its hardware built in a display. Most tasks will be pdf/docs processing, real-time audio processing, web-surfing and skype video chats. Certainly, there is no any fan-less model today; but maybe some of the existed laptops do not switch on their fans so often or implement different solutions? For example, an iPad has no fan at all and it is fast enough for my needs, but it has no normal operating system, so I can't use it for anything but audio chats and web-surfing. Or maybe I can buy a laptop and tweak it to make it absolutely noiseless? Can you recommend me any solution please? Thanks in advance!

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• Backup tape compression

  - by pufferfish

  What things should I check to confirm that compression is actually happening on our tape backup system? Although the tapes are marked as 200G/520G (native/compressed) capacity, they seem to fill up before the 200G mark (some less than 100G). I'm using - Sony AIT-4 tape autochanger - Sony SDX4-200C (AIT-4) tapes - Ubuntu Lucid - Bacula I've tried checking hardware compression with: tapeinfo -f /dev/nst0, which gives Product Type: Tape Drive Vendor ID: 'SONY ' Product ID: 'SDX-900V ' Revision: '0102' Attached Changer API: No SerialNumber: '0001000036' MinBlock: 2 MaxBlock: 8388608 SCSI ID: 1 SCSI LUN: 0 Ready: yes BufferedMode: yes Medium Type: Not Loaded Density Code: 0x33 BlockSize: 0 DataCompEnabled: yes DataCompCapable: yes DataDeCompEnabled: yes CompType: 0x3 DeCompType: 0x3 BOP: yes Block Position: 0 Partition 0 Remaining Kbytes: 201778000 Partition 0 Size in Kbytes: 201779000 ActivePartition: 0 EarlyWarningSize: 0 NumPartitions: 0 MaxPartitions: 0 ... so I presume it's on. Notes: The Bacula documentation says hardware compression needs to be enable with "system tools such as mt"

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• How to benchmark kernel (-Os vs -O2)

  - by NightwishFan

  It seems logical to me that on a 64-bit kernel compiling it to optimize for size might help overall. (My distro of choice uses -O2) It has the benefits of more registers and memory and perhaps less cache contention than normal optimized code. I have a kernel compiled like this and it seems excellent. However my question is how can I prove this? I like using Phoronix for "real world" sort of benchmarks so I would prefer to test cases like that. What should I pick to test? Does anyone else have any alternatives? Thank you very much in advance.

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• Win XP Pro, IIS 5.1, PCI Compliance

  - by Mudman266

  I have a client that was scanned and determined not to be PCI Compliant. I looked and they had IIS setup to allow a program from central office to push/pull info from their server. Many of the reasons they failed appeared to have been fixed in SPs (they were on SP2) or security updates. I fully patched the server to (Windows XP Pro) SP3 with all optional updates. I had them scan again and again they failed with only one less vulnerability that I manually corrected (server was showing debugging/error messages). The main issue I'm having is that when I research the CVE code for each error, they say they are fixed in SP2 and up. I'm wondering if I need to remove IIS and resetup since I have patched to SP3. Any ideas?

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• What does "Windows is not a real-time operating system" mean?

  - by hydroparadise

  I came across an application called LatencyMon, that apparently does latency monitoring. I have always understood the more of a load you put on the processor, the less responsive, or more latent, the system becomes. However, in the second section of the LatencyMon page, the first sentence says, "Windows is not a real-time operating system". That got me thinking. I mean, is this any different from any other operatiing system like linux, unix, or OS X? Are there any "Real-Time" operating systems? Or is the merely a marketing scheme to get you to buy their product? EDIT: Also, are there any examples of RTOS's out there?

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• What methods are there to configure puppet to serve resources for multiple environments?

  - by cclark

  I seem to come across two ways for using puppet in multiple environments: 1) Install a puppetmaster in each environment and only update the recipes from source control for that environment when ready to deploy the recipes in that environment. 2) Use one puppetmaster and use a variable in the puppet.conf of each client to specify the environment and then in the puppetmaster specify a different modulepath for each environment and each of those paths is updated to the branch of the recipe repository intended for that environment (e.g. dev, staging, production). Only running one puppetmaster seems like it is one less piece of infrastructure to keep running but there is some additional complexity in the configuration. Are there additional pros or cons to one of these methods or something which I'm missing entirely?

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• Doesn't DNS diversity negatively affect performance? Why/how?

  - by cnst

  If you look at the press releases of various orgs that run the internet, you can see them praise the fact that now they run root server X in city Y, as if that magically makes everyone in city Y get all the relevant resolutions from the local server X, instead of going 200ms across the oceans and lands to other continents for resolutions. Similarly, the zones of some geographical domain names, like .ru, are being mirrored not just within Europe, but also, for example, in Hong Kong, which is no more, no less, but is about 300ms away from central Europe, since the traffic is often crossing the two oceans on each way. Doesn't all of this negatively affect DNS performance? Isn't it more of a liability to have a diverse pool of geodispersed authoritative servers, especially if your target audience is quite geographically concentrated? Perhaps a better question is, are there any DNS resolvers that use something better than the naive round-robin for choosing which authoritative server to contact?

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• How can HAProxy improve availibility, or "how can I prevent my site from going down"? [closed]

  - by Joe Hopfgartner

  I am aware of what HAProxy does, but what if my HAproxy goes down? Or what if my DNS servers go down? Yes, dns is less the problem. However dns only solves to an IP and an IP is announced via BGP to be routed over some router. What if that router goes down? Of course if I have complicated application servers that are likely to fail HAProxy can significantly improve uptime. But my application isnt. In fact my application may very well just be delivering a small static html file via HTTP. Basically if any user anywhere types in MYDOMAIN.COM, I want the user to get SOMETHING on the screen other than a timeout or DNS resolution error. How can I do that? The point of entry is difficult. The so called "initial closure mechanism".

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