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• Set an Excel cell's color based on multiple other cells' colors

  - by Lord Torgamus

  I have an Excel 2007 spreadsheet for a list of products and a bunch of factors to rate each one on, and I'm using Conditional Formatting to set the color of the cells in the individual attribute columns. It looks something like this: I want to fill in the rating column for each item with a color, based on the color ratings of its individual attributes. Examples of ways to determine this: the color of the category in which the item scored worst the statistical mode of the category colors the average of the category ratings, where each color is assigned a numerical value How can I implement any or all of the above rules? (I'm really just asking for a quick overview of the relevant Excel feature; I don't need step-by-step instructions for each rule.)

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• mail server checklist..

  - by Jeff

  currently we ran into some issues with our mail server setup. im preparing a list of actions that we should enforce and use in order to maintain a proper email solution within our company. we have around 80 exchange users, and send mass emails out almost on a monthly bases to 20,000 + customers each time.. the checklist i currently have: 1) mcafee mxlogic 'cloud' anti-spam functionality for incoming message. 2) antivirus on each computer in company 3) antivirus on exchange and DNS servers 4) setup SPF record 5) setup DKIM 6) setup domainkey 7) setup senderID 8) submit spf to microsoft, yahoo, etc. for 'whitelist' purposes. 9) configure size limits for messages in exchange to safe numbers 10) i have 2 outside IPs for my email server, incase one gets blacklisted, switch to the backup. 11) my internet site rests on a different ip than the mail server 12) all mass emails for company sent through 3rd party company (listtrak.com) 13) setup domain alias, media, enews, and bounce for the 3rd party mass mail software. 14) verify the setup using [email protected] 15) configure group policy and our opendns.org account to prevent unwanted actions and website viewing mass emails: 1) schedule them to send different amounts at different times (1,000 at 10am, 1,000 at 4pm, 1,000 10am next day).. 2) setup user prefences, decide what they want to receive ect. ( there interests) 3) send a more steady flow of email, maybe 100 a week with top new products instead of 20,000k every other month.. if anyone has suggestions or additions/subtractions to this checklist they are greatly appreciated. thank you

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• AB failed requests - What can I do about them?

  - by matthewsteiner

  So, in the past I've never had any problems with this app. All benchmarks had 100% success rate. Yesterday I set up nginx to server static content and pass on other requests to apache. Now, if I have 1 concurrent user (-c 1) then everything is fine. But it seems the more concurrent users I have, the more failed requests I get. Not a lot, but maybe about 10 or 15 out of 350. They're "length", whatever that means. Visiting the website with a browser, I don't have any problems at all. How can I find out the cause of these failed requests?

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• Open table cache in MySQL

  - by vvanscherpenseel

  I have my open table cache set to 1800 and I have a total of 1112 tables. MySQL Tuning Primer reports that 100% of my table cache is used yet my table cache hit rate is 5%. I understand that this happens due to concurrent connections all opening tables. I think I should raise the cache limit. I understand that the cache size is limited by the file descriptor limit of my operating system, but are there any other practical limitations I should be aware of? Searching Google or this very website yields mostly posts explaining the connection-factor or come up with indecisive answers. My question: can I safely increase the open table cache limit? Is there a maximum?

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• HAProxy overload protection

  - by user2050516

  using the HAProxy, would it be possible to configure an overload protection, to limit the amount of requests sent to the backing http server(s) to a given rate (z.B 100 Request per second ). If the threshold is exceeded requests should be answered with a default response. I am interested in requests per second not connections per second as a connection can have many requests. And yes to improve the servers is not an option here. If yes a configuration example to achieve that would be excellent. Thank you in advance.

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• Installation fails after period of time

  - by Jack Marchetti

  I'm running Windows 7 64 bit, Ultimate. I'm running into a problem where, if my computer is on long enough, I am unable to install any software. For example, if I reboot and try to install something, for the most part, it will succeed. if I try and install something after a few hours/days, it will always fail. Sometimes stating that "a previous install failed..." or "an install is already taking place..." even though there is nothing being installed. This also seems to be making my Windows updates fail at a pretty regular rate. Any ideas?

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• encoding movies for the web

  - by ELS

  Hi All, I have a friend that hosts his website on IIS and Windows Server 2003 R2 32-bit. He has .WMV files and .MPG and others and some of these are 30 mb in size! He wonders why users complain the site is slow! So my question is how can we reduce the size of these movies? What software? What settings for bit-rate, etc? Is there free software? I can use either a Mac or a PC. Thoughts are appreciated.

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• excel date range help please

  - by Mark

  I need help with either a formula or a macro to help automate a grade sheets dates. We have class every monday or wednesday only. I would like to vlookup from a input table of each quarters date range (example Sept. 10 - Oct 24 and the code auto insert the date of every monday and wednesday in a row at the top of my grade sheet. Every year I use the same excel workbook I built to average and rate the grading with no problem, however i can't seem to get this one right. Any help would be greatly appreciated. Currently I have to enter each date by hand. Thanks Again for any help.

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• Is there a difference in page fault rates between CPU bound and I/O bound processes?

  - by user198864

  I was thinking, should there be any difference in expectation of the page fault rate on CPU-bound vs I/O bound processes? At first I thought maybe we could, since CPU-bound processes would likely be using more memory accesses per time quantum, so I expect it would move from locality to locality faster. At the same time, the CPU-bound process is probably given a larger working set... but this doesn't affect the fault overhead as it hits a new locality IF this wasn't pre-paged in. Is there actually any real difference in the page fault rates or am I just musing about something nonexistent? And if there is, how would it impact a real-world OS like linux?

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• Shaping with shorewall complex shaper not work (or I don't understand principle of operation)

  - by strangeman

  I have router (Debian 6) with 2 network interfaces (and 1 virtual tun interface): eth0 - localnet, 192.168.1.0/24, router ip is 192.168.1.1 eth1 - internet tun0 - openvpn to central office. openvpn network - 10.1.0.0/24, central office network - 192.168.0.0/24 I need shape all traffic, which moves 192.168.1.0/24-192.168.0.1:6666 and 192.168.1.0/24<-192.168.0.1:6666, and restrict its speed to 200kbit. Now, I have this configuration, but its not work: tcdevices (set up interface parameters) #INTERFACE IN-BANDWITH OUT-BANDWIDTH eth0 100mbit 100mbit #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE tcrules (mark all traffic, which move on 6666 port) #MARK SOURCE DEST PROTO PORT(S) 1 0.0.0.0/0 0.0.0.0/0 tcp 6666 #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE tcclasses (shape all marked traffic) #INTERFACE MARK RATE CEIL PRIORITY OPTIONS eth0 1 200kbit 200kbit 2 eth0 255 9*full/10 full 1 default #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE Where is my mistake?

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• Using Windows as a gateway to the internet

  - by James Wright

  My customer currently blocks outbound RDP and SSH, which means that none of their employees can get access to external Windows and Linux boxes (at the console level). However, a need has recently arisen to give access to an assortment of RDP and SSH endpoints scattered throughout the internet. The endpoint IP addresses are a moving target, and an access list exists to define what those IP addresses are. So now my customer wants to have a single Windows Server that they control as the sole outbound point for RDP/SSH to the internet. Consider it a jump box to the internet. If one of our admins have an access to this Windows box then they can log on, and from there bounce around to RDP/SSH endpoints on the internet. Is a standard Windows 2008 box going to work as a jump box? For example, I seem to recall that Win2k8 limits the number of users that can log on simultaneously, which means that the jump box may not be accessible if lots of users are on it. Advice as to how to make this work..?

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• Per process I/O accounting on AIX

  - by ipozgaj

  Is there a way of getting per process I/O statistics on AIX, i.e. to get current disk I/O rate of a process? Commands like iostat, nmon, topas etc. can't display such data. Filemon also doesn't help. Actually, what I would need is something much like iotop(1) command on Linux. Update: it seems there is no builtin command(s) to do this. I will most probably make my own by using the SPMI API.

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• Password protected traffic meter

  - by UncleBob

  Hi first, I have a small problem for which I haven't found a solution yet. I live in Bosnia and share the Internet connection with the landlady, and as is usual in Bosnia, we do not have a flat rate, but a 15 Giga traffic limite. That would actually be more than enough, if the son of the landlady wouldn't be watching videos all the time, so the bills are truning out rather expensive. I have already installed a traffic monitoring program, but he apparently turns it off as soon as he comes close to his limit and then denies that he consumed any more. I therefore need at least a measurement program that is password protected and / or notes in the log when it's been turned off. Even better would be a program that just cuts his access when he exceeds his share, ie a mixture of Traffic meter and Parental Guard. Can someone help me out here?

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• Is 50% download speed on a wireless G network normal?

  - by Bartlomiej Skwira

  I have a wired connection of about 36Mb/s, but my wireless speed is max at about 18-19Mb/s. I have a WRT54G-TM (T-Mobile, 802.11G) router with DD-WRT firmware - I've upgraded it to latest build. Done some settings changes: changed channel - 13 wireless network mode - G-only ACK Timing - 0 Fragmentation Threshold and RTS Threshold - 2304 Basic Rate - All Signal/Noise ratio: -46/-94, signal quality ~50-60%. Is this normal with G networks? Edit: The AP is located about 2 meters from laptop, no walls or metal objects, but its next to a TV. I've done a channel scan (had problems locating it, go to "Status - Wireless - Site survey" - lame naming) and everybody else is on channels 1 and 6. Switched to channel 11 but it didn't help. As for trasmit power I got best results with default 71mw. The antenna might be a factor, I'm using the default 2 antennas.

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• Server 2003 slow share.

  - by G V

  I am running an 03 box with shares active. When uploading to the share, the speed is average. About 15-20 mbps.. But when you think about it, it is bad because it is a direct connection to a couple machines. When uploading to another server the connection speed is twice that of the direct storage. When uploading s massive folder, 250 GB, the upload will start as normal, but as it progresses it drops in speed. Now it is sitting at around 2-7 Mbps. Any ideas on how i can boost the transfer rate? On a side note, the download speed is great. It is a speed that you would expect from this setup, the main problem is uploading and what is causing the extreme slowness in speeds. Any help would be great.

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• Can the Nikon D50 be hacked to record video?

  - by andy

  I mean hacked in terms of software only, and minor hardware hacking if necessary, without of course breaking the camera. Also, if possible, video should be able to be recorded at an acceptable frame rate, around 20fps. thanks p.s. Reason for this question: Just to give some context before people tell me to buy a new camera! For still photography I now almost exclusively shoot film with a Nikon F3, and my D50 is gathering dust. I want to shoot some video of my Capoeria classes, for personal use, and thought maybe I could put my D50 to good use. Yes, I could buy a D5000 or older D90, but really I just want to shoot some video with my nice wide Nikkor lenses at no extra cost!

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• Very Dark Windows 7 Screen

  - by user147521

  My Gateway laptop -Windows 7- screen became too dark a few days ago after I finished installing Windows automatic update. I can see nothing unless I use a flashlight. Windows login screen is the only bright screen for few seconds. What should I do to resolve this issue? I checked power-saving/ Power Options settings and rebooting in Safe Mode. I tried to lower the refresh rate but it did not allow me. The laptop adapter type is ATI Radeon Xpress series. I calibrated display color. I uninstalled and reinstalled the adapter. I tried to update the driver but the driver is up to-date. Any help would be appreciated.

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• mysql server, open 'dead' connections

  - by Jeff

  my basic question is what kind of impact does this have on the server.. lets say for example, there is an older program in my company that opens connections to a mysql database server at a high rate (everything they do with the application basically opens a server connections) however, this application was not designed in the way to dispose of the connections after they where created.. alot of the time the connections remain open but are never used again, open 'dead' connections i guess you could say. they just remain connected until the server times them out, or until an admin goes in and removes the sleeping connections manually. im guessing this could be responsible for sometimes not able to connect errors etc. that we receive from other systems that try to access the mysql database? (connections limit reached) could this slow down the server as well? curious what all this could exactly cause. thanks!

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• wmp12 refuses to convert files when syncing

  - by Carbonara

  I have quite a large music collection of MP3s at 320kbps and some WMA files at various bitrates. I'm trying to sync some of them to my HTC Desire and am quickly running out of space. WMP12 has options to set, per device you wish to sync, to auto convert to a lower bitrate whilst syncing. I have set this to auto convert files to a maximum bitrate of 192kbps, that way I can fit more music on the device but keep the files on my PC at the higher rate. See these screens to see that it's set up correctly. Only problem is, surprise surprise for a Microsoft product, it doesn't actually work. Any file that is greater than 192kbps, MP3 or WMA simply fails, doesn't get converted or copied to the device. The message in the sync log displays the rather unhelpful message "error" and that's it. Any help would be appreciated. I'm not really looking for alternative software solutions I'd like to get this working since that's what it's supposed to do.

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• Applications getting killed automatically

  - by nebi

  I am running httperf client on my m/c and after few seconds it is getting killed. dmesg shows: The command is: httperf --hog --client=0/1 --server=39.0.0.2 --port=80 --uri=/50kb --rate=20000 --send-buffer=4096 --recv-buffer=16384 --num-conns=6000000 --num-calls=1 Although I had done this test no. of times but never faced this error any time. From last two days I am observing this. My Ubuntu version is ubuntu 10.04. and httperf version is httperf-0.9.0 [ 2997.180620] Out of memory: kill process 7977 (apache2) score 70532 or a child [ 2997.180632] Killed process 7977 (apache2) [ 2997.184837] Out of memory: kill process 7971 (rsyslogd) score 8702 or a child [ 2997.184844] Killed process 7971 (rsyslogd) [ 2997.188823] Out of memory: kill process 7978 (apache2) score 1354 or a child [ 2997.188829] Killed process 7978 (apache2) [ 2997.192817] Out of memory: kill process 7973 (atd) score 561 or a child [ 2997.192822] Killed process 7973 (atd) [ 2997.196805] Out of memory: kill process 8102 (httperf) score 471 or a child [ 2997.196811] Killed process 8102 (httperf) Output of free command: total used free shared buffers cached Mem: 3862768 163000 3699768 0 2384 13068 -/+ buffers/cache: 147548 3715220 Swap: 3905528 0 3905528

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• Load Balancing is unusual in Apache in round-robin mode when one of the tomcat is brought down

  - by srayker

  We are facing a unusual behavior with round-robin load balancing on apache when one of the tomcat server is brought down. Our Setup: we have 2 apache web servers on the front end using mod_jk module for load balancing using round robin for load distribution. We also have enabled session stickyness. This is followed by 4 tomcat servers on which the applications are running. Sometimes under heavy load, if there is a slowness in our DB tier we find that eventually one of the tomcat goes into a hung state and would need a restart. The moment we bounce the tomcat we see a spike in requests in one of the server and this would also go into hung state and need a restart. Eventually all the server will face similar condition. What beats me is why does the Apache transfer the whole load to one server instead of distributing the load. We are now trying the worker.balancer.method=B to see if this helps to resolve our issue. Any thoughts on resolving the issue is greatly appreciated. regards, srayker

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• A solid unity plugin to stream youtube video

  - by user3670018

  I've been searching for hours for a Unity 4.5 plugin that allows users to watch youtube video in an android app. (I've found several solutions for IOS but not android!). Can anyone give me some pointers? I've tried uwebkit(which only works for IOS), vuforia, and many google.com suggestions I found online. None of them worked and its very fustrating. I just want to watch a youtube video via an unity app in android phone/tablet. It shouldn't be that hard of a task /=. Oh, I've also tried Unity support forum, the response rate is a bit lower in SO/SU.

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• Why would one server be sending DUP ACK packets to one PC, which is responding with HTTP RST packets?

  - by IronicMuffin

  I'm not a network profressional, so please excuse any wrong language. I was debugging why my DNS traffic was a constant 160Kbps on our corporate network. I opened up a wireshark trace, and I see one PC of a coworker broadcasting HTTP [RST] packets to one of our DMZ servers at the rate of 1000 a second. He restarted his machine, and as soon as it went offline, the server started broadcasting [DUP] [ACK] packets, until he came back online. It then resumed the HTTP [RST] packets. Apparently this server has been doing this kind of behavior since it went live. I believe it did this with a printer and an access point as well. Can anyone explain why this behavior is occurring? Any solutions? The initial research was done because there have been "bandwidth issues" and I wonder if this is contributing.

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• How long does it take in practice to warm up large in-memory databases?

  - by Sim

  Companies such as Peak Hosting are offering 64 core machines with 512Gb RAM for $2K/month. This is a very interesting choice for in-memory databases such as Memcached/Redis as well as databases whose performance degrades rapidly when the data & indexes don't fit in RAM, such as MongoDB. My main concern with monster machines such as these is the time it takes to warm up an in-memory database. In my experience, theoretical metrics, e.g., that SATA can load 100Mb/sec, fall short of what happens in practice. Even at that rate, 100Mb/sec means that loading up 512Gb RAM machine from SATA disks can take over 1 1/2 hours (!). I am looking for real-world reports of warm-up times for machines with very large memory. Please, share details of the software on the machine, data size, storage configuration, e.g., SATA or SSD, network, hosting/cloud provider, if relevant, etc.

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• How to lookup a value in a table with multiple criteria

  - by php-b-grader

  I have a data sheet with multiple values in multiple columns. I have a qty and a current price which when multiplied out gives me the current revenue (CurRev). I want to use this lookup table to give me the new revenue (NewRev) from the new price but can't figure out how to do multiple ifs in a lookup. What I want is to build a new column that checks the "Product", "Tier" and "Location/State" and gives me the new price from the lookup table (above) and then multiply that by the qty. e.g. Data > Product, Tier, Location, Qty, CurRev, NewRev > Product1, Tier1, VIC, 2, $1000.00, $6000 (2 x $3000) > Product2, Tier3, NSW, 1, $100.00, $200 (1 x $200) > Product1, Tier3, SA, 5, $250.00, $750 (5 x $150) > Product3, Tier1, ACT, 5, $100.00, $500(5 x $100) > Product2, Tier3, QLD, 2, $150.00, $240 (2 x $240) Worst case, if I just get the new rate I can create another column

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