Fast method for checking if a version of a package is installed.

[AlexisColes]

Hi there,

Please let me know if I am missing something but i am using the following powershell to check to see if a package is installed or not.

choco list -lo | Where-object { $_.ToLower().StartsWith("SomeName".ToLower()) }
if($result -ne $null){
$parts = $result.Split(' ');
	return $parts[1] -eq $this.Version;
}
return $false;

However "choco list -lo" is taking 2-3 seconds to give me a list of about 5 installed packages.

This is quite a long time if I want to check many packages on many servers and I am not sure why it needs to take so long. Is it possible to add a better function for checking if a particular version of a package is installed that returns in less that 50ms?

Cheers.

[ferventcoder]

2-3 seconds? What version of Chocolatey are you on?

[ferventcoder]

It should be subsecond return speed.

[AlexisColes]

PS C:\Users\alexis.coles.adm> choco
Chocolatey v0.10.5

PS C:\Users\alexis.coles.adm> measure-command { choco list -lo }

Days : 0
Hours : 0
Minutes : 0
Seconds : 2
Milliseconds : 88
Ticks : 20885527
TotalDays : 2.41730636574074E-05
TotalHours : 0.000580153527777778
TotalMinutes : 0.0348092116666667
TotalSeconds : 2.0885527
TotalMilliseconds : 2088.5527

[ferventcoder]

Dumb question. How big are those nupkgs?

[ferventcoder]

You were a bit quicker than I was posting Measure-Command. 👍

Here are my results with 167 packages installed:

> Measure-Command { choco list -lo }

Days              : 0
Hours             : 0
Minutes           : 0
Seconds           : 1
Milliseconds      : 858
Ticks             : 18589399
TotalDays         : 2.15155081018519E-05
TotalHours        : 0.000516372194444444
TotalMinutes      : 0.0309823316666667
TotalSeconds      : 1.8589399
TotalMilliseconds : 1858.9399

[ferventcoder]

And here from a Windows 2012R2 box that has 2GB RAM given to it:

Still faster than what you are seeing. Something else may be going on.

[ferventcoder]

There was a small bit of slow down in a lookup that was added for 0.10.4+ - #942. However, as you can see it is within reason and has no adverse linear effect.

[AlexisColes]

Ok here are the package sizes

C:\ProgramData\chocolatey\lib\chocolatey: 6.69 mb
C:\ProgramData\chocolatey\lib\consul: 75.39 mb
C:\ProgramData\chocolatey\lib\ConsulAgentService: 0.01 mb
C:\ProgramData\chocolatey\lib\FileBeat: 34.51 mb
C:\ProgramData\chocolatey\lib\NSSM: 1.16 mb

[ferventcoder]

Nupkg size, not the directory.

[ferventcoder]

Another consideration, you may want to ensure you have set cacheLocation in the configuration. That helps with a lot of things.

[AlexisColes]

Sorry my bad,

consul.nupkg: 20.4 mb
ConsulAgentService.nupkg: 5.64KB
FileBeat.nupkg: 7.99 mb
NSSM.nupkg: 4.24 kb

[ferventcoder]

No worries. While package size does affect this speed, I don't see anything here in general that could cause that manner of slow down. Do you have any AV set up that may be looking at file access?

[AlexisColes]

Ok so I ran the following

choco config set cacheLocation c:\temp\choco

now getting the following

measure-command { choco list -lo }

Days : 0
Hours : 0
Minutes : 0
Seconds : 1
Milliseconds : 701
Ticks : 17018178

So that has made a difference!! Thanks

But I would still say that this could be a lot quicker ideally as to run through a lot of packages and computers these seconds will still add up

[AlexisColes]

No anti virus, this is running on windows server 2008R2 vm 4 cores 3GB of free memory disk shouldbe doing upward of 400-500iops