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.net runtime optimization serviceQuestion about the .net optimization service:
I have been having an issue where my system has been running out of disk space constantly, after going through the usual spyware/virus scans etc. I noticed in my error logs that the .net runtime optimization service was logging numerous information entries. After some investigation I found that my assembly directory was 5gb. Under the Native Images directory for 2.0, and under each directory for each assebly there were multiple copies of each native image for each assembly. After stopping the .net runtime optimization service these duplicates stopped. What I'm trying to figure out is why this happened so that I can correct the problem. Any help would be appreciated. Thanks, Erik Beltran Solutions, LLC Erik B. wrote:
> Question about the .net optimization service: I don't have any solutions, just some questions. Yiou say that you have > > I have been having an issue where my system has been running out of > disk space constantly, after going through the usual spyware/virus > scans etc. I noticed in my error logs that the .net runtime > optimization service was logging numerous information entries. After > some investigation I found that my assembly directory was 5gb. Under > the Native Images directory for 2.0, and under each directory for > each assebly there were multiple copies of each native image for each > assembly. After stopping the .net runtime optimization service these > duplicates stopped. What I'm trying to figure out is why this > happened so that I can correct the problem. Any help would be > appreciated. multiple copies, can you explain how. The optimization service names the native image using the tag ni (eg the native image for lib.dll is lib.ni.dll) Thus in one folder you can have just one copy. Each version has a separate folder, are you seeing multiple copies corresponding to multiple versions of an assembly? Do you have multiple users on your machine? When I check the security descriptor of (for example) mscorlib.ni.dll on my machine I find that the owner is my account (although the command line tool cacls does not give you the owner, it will list the owner in the list of account rights that it will display). Richard -- Fusion Tutorial: http://www.grimes.demon.co.uk/workshops/fusionWS.htm Security Tutorial: http://www.grimes.demon.co.uk/workshops/securityWS.htm For Example:
In c:\windows\assembly\NavtiveImages2_v2.0.50727_32 there is a directory for each assembly my machine looks something like this: c:\ windows assembly NativeImages@_v2.0.x System at this level there are multiple directories and each one has a copy of system.ni.dll hope this helps, again I stopped it from creating more directories by shutting down the optimization service, but I would like to know what is causing it to happen. Thanks. Show quote "Richard Grimes" wrote: > Erik B. wrote: > > Question about the .net optimization service: > > > > I have been having an issue where my system has been running out of > > disk space constantly, after going through the usual spyware/virus > > scans etc. I noticed in my error logs that the .net runtime > > optimization service was logging numerous information entries. After > > some investigation I found that my assembly directory was 5gb. Under > > the Native Images directory for 2.0, and under each directory for > > each assebly there were multiple copies of each native image for each > > assembly. After stopping the .net runtime optimization service these > > duplicates stopped. What I'm trying to figure out is why this > > happened so that I can correct the problem. Any help would be > > appreciated. > > I don't have any solutions, just some questions. Yiou say that you have > multiple copies, can you explain how. The optimization service names the > native image using the tag ni (eg the native image for lib.dll is > lib.ni.dll) Thus in one folder you can have just one copy. Each version > has a separate folder, are you seeing multiple copies corresponding to > multiple versions of an assembly? Do you have multiple users on your > machine? When I check the security descriptor of (for example) > mscorlib.ni.dll on my machine I find that the owner is my account > (although the command line tool cacls does not give you the owner, it > will list the owner in the list of account rights that it will display). > > Richard > -- > Fusion Tutorial: http://www.grimes.demon.co.uk/workshops/fusionWS.htm > Security Tutorial: > http://www.grimes.demon.co.uk/workshops/securityWS.htm > > > Erik B. wrote:
> hope this helps, again I stopped it from creating more directories by I haven't been able to decipher what the directory names below the > shutting down the optimization service, but I would like to know what > is causing it to happen. directory with the name of the assembly, it may just be derived from the time and date, or maybe it is a hash of the native image. One thing you should be aware of is that .NET link demands are performed at JIT time which means that if your security policy changes then .NET will have to ngen all the native images again to take into account the new security settings. Have you changed the CAS security on your machine recently? If it was my machine, I would be tempted to write a small program that uses a type in one of the assemblies with a native image and in the program I would print out Assembly.GetExecutingAssembly().Codebase (or maybe even assume that the last folder created has the native image that would be used) Then I would rename the other folders (add .old to the end of the existing name) and after testing, if I was convinced those native images weren't used, I would delete them. Of course, you would only do this too at your own risk! Richard -- Fusion Tutorial: http://www.grimes.demon.co.uk/workshops/fusionWS.htm Security Tutorial: http://www.grimes.demon.co.uk/workshops/securityWS.htm  |
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