Tag Archives: power

Use PowerShell To Find Resource Hogs

Tools IconHere’s a quick tidbit for any and all Windows jockeys out there. Need to figure out what is chewing up all of your system resources? Need to do it quickly and easily? Have no fear, Laz and the PowerShell are here. Some of you may know this already, so let those who don’t have some air!

OK, bring up the PowerShell (*note, this is different from the DOS “like” Command Prompt and can usually be installed through Windows Update). Once the PowerShell is open, you can use the ‘ps’ command to get a list of the currently running pr0cesses, but believe you me there are a lot of them and they scroll by all unformatted and hard to read and stuff. All in all you get a bunch of info that is hard to understand!

“So, what are we doing here?” you ask. Well, this is where just like with the ‘ps’ command (and the PowerShell in and of itself too), Windows takes some inspiration from UNIX and not only adds some nifty commands to help wrangle all that information that goes scrolling by, but also the idea of “piping” commands or a more simpler analogy, a way to link commands together. Making them talk to each other, work together and share information like never before. You pipe commands together with the ‘|’ character, and it allows you to run a command and take that output and send it to the next command. You will see this in the final command we will use, take a look:

ps | sort -desc cpu | select -f 20 | ft -a;

So, let’s take a look at what this command or set of commands really, does. First off the ps command gets the current list of processes running on the machine along with certain information about each and every one of them like the ‘Process ID’, the ‘ProcessName’ and the amount of ‘CPU’ time it’s using to name just a few. We then take all of that ‘ps’ data and “pipe” or feed it into the ‘sort’ command, telling sort to … well, sort that information by the ‘CPU’ column in “Descending” order. We then take all that sorted data and use the ‘select’ command to only grab or select the top ’20’ items in the list. Last but not least, we use the ‘ft’ command to “format” the list that we have now, which has been cut down to just the top 20 processes sorted by how much of your CPU they are using starting with the most at the top of the list and then listing the top 20 going down from there.

Ultimately, you run this command just like you see it above and you will get a list of the top processes that looks like this:

PS C:\temp> ps | sort -desc cpu | select -f 20 | ft -a;

Handles NPM(K)   PM(K)   WS(K) VM(M)   CPU(s)   Id ProcessName
------- ------   -----   ----- -----   ------   -- -----------
    197     14    6700   11456    92 1,008.66 2744 AODAssist
    422     15    6272   11572    53   886.27 1112 svchost
   2398   1032  115224   10804   420   863.37 2020 AvastSvc
    827     48  253744  247248   371   641.55 1388 svchost
   1132    106   86252  118472   421   575.07 3596 explorer
    140     69   45028   49456   173   572.51 5012 Everything
    485     47   46612   69228   284   565.83 9608 explorer
   1535     90   33912   49260   433   453.93 1460 svchost
    717     52   29416   27460   124   451.45 1352 svchost
    363     43   41048   11472   176   370.32 4436 svchost
    909     63   94836  129776   726   366.38 6388 dopus
    596     54   24476   26196   248   364.06 5136 avastui
    684     44   22172   23564   241   352.66 1048 svchost
    140     13  119472  113980   183   328.48 6972 vmware-usbarbitrator64
    300     13    9940   14796    64   306.90 6516 WmiPrvSE
    346     31   35176   29280   203   302.42 4688 tlbHost
    225     24 1431016 1339160  1460   263.47 1500 stacsv64
    865     81   27488   36708   149   216.86 1420 svchost
    202     16    7300   15020    96   215.45 1744 WHSTrayApp
    110     10    7144   10368    58   200.74 3252 BitMeterCaptureService

There you go, a nice handy little list of your top offenders! If you keep a PowerShell handy, it can be a very fast way to take a quick look at what’s going on under the hood of your PC. Enjoy!

PowerUp Your Shell With Your Profile

How about some neat-o shell tricks for everyone to play with? I figured out some neat things the other day while trying to add some functionality to my shell, specifically through scripts or the profile.  What I found was that the magic is in the profile!

Have you ever wanted to have commands that performed certain functions from quick keystrokes rather than long command lines? Of course you have, that’s why we all set aliases in our profiles like ‘ll’ instead of ‘ls -al’ and the like.  But what if you want or need more functionality than simple command shortening? That’s what I was after, more function in a smaller form.  Some way to pass variables to aliases to get more out of them. Ah, but you can’t pass variables to aliases, so we are stuck right? Wrong, that’s where the functions come in to play.

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