RN214 - Extremely slow with zip files

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StephenB wrote:

 I'll try to duplicate your results on a Windows PC and see how that compares.  I use 7-zip (not sure if that will make a difference or not).

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Turns out the 7-zip command line interface is a bit restrictive - it won't allow me to put an output zip on the SSD when the source is on the NAS.

However, I was able to compare SSD->SSD performance on my PC with NAS->NAS performance using a mapped drive on the PC.  While the NAS->NAS performance was slower, it wasn't anything like what you are seeing.  My test folder has 5884 files in 177 folders, and a total size of about 500 MB.

I suggest trying your test w/o the round-robin bonding - just to see if that is a factor.  You could also try to duplicate my results with 7za.  

Local SSD->Local SSD Zip Creation took about 12 seconds (Global Time is the actual wall clock time).

Test1:  Create Zip SSD->SSD
7za a -bt -tzip LocalTestSrc

Files read from disk: 5884
Archive size: 297220124 bytes (284 MiB)
Everything is Ok

Kernel  Time =     1.968 =   16%                 132515 MCycles
User    Time =    38.171 =  325%
Process Time =    40.140 =  342%    Virtual  Memory =    150 MB
Global  Time =    11.722 =  100%    Physical Memory =     90 MB

NAS->NAS Zip creation took about 40 seconds - definitely longer, but not minute/hours.

Test2:  Create Zip NAS->NAS (526x mapped drive)
7za a -bt -tzip NASTestSrc

Files read from disk: 5884
Archive size: 297195876 bytes (284 MiB)
Everything is Ok

Kernel  Time =     4.593 =   11%                 146766 MCycles
User    Time =    39.234 =   99%
Process Time =    43.828 =  111%    Virtual  Memory =    150 MB
Global  Time =    39.332 =  100%    Physical Memory =     48 MB

FWIW, the process time and cycle count is really quite close.  I'm guessing the difference is SMB latency.

Local SSD-SSD extraction also took about 12 seconds:

Test3:  Extract ZIP SSD->SSD
7za x -bt -tzip LocalTestSrc.zip

Folders: 178
Files: 5884
Size:       486495926
Compressed: 297220124

Kernel  Time =     6.875 =   58%                  35717 MCycles
User    Time =     3.843 =   32%
Process Time =    10.718 =   91%    Virtual  Memory =      5 MB
Global  Time =    11.736 =  100%    Physical Memory =      9 MB

NAS->NAS extraction took about 80 seconds

Test4:  Extract ZIP NAS->NAS (526x mapped drive)
7za x -bt -tzip NASTestSrc.zip

Folders: 178
Files: 5884
Size:       486495926
Compressed: 297195876

Kernel  Time =    14.796 =   18%                  62914 MCycles
User    Time =     3.453 =    4%
Process Time =    18.250 =   23%    Virtual  Memory =      5 MB
Global  Time =    78.821 =  100%    Physical Memory =      9 MB

Process time and cycle counts are higher than the local extraction test, but I think the main difference is again SMB latency.

I then repeated the NAS->NAS tests on an RN202.  I'm not using bonding (and I don't use volume encryption).  The share is on a jbod volume.

The NAS->NAS zip creation results were similar to the RN526 performance. The extraction test was quite a bit worse (165 seconds, compared with 79).  Still not minutes/hours though.