Logesh

The anti-virus name is 'cynet'. Whitelisting 7z.exe and adding exclude paths solved this issue and i understand this is kind of naive. I'll update once i get the root cause and solution

Thanks a lot for your time, it is anti-virus affecting the write performance. :-)

Filesystem : NTFS As stated, the benchmarks are higher in EPYC. SILVER 4110 7-Zip 19.00 (x64) : Copyright (c) 1999-2018 Igor Pavlov : 2019-02-21 Scanning the drive for archives: 1 file, 579479673 bytes (553 MiB) Testing archive: SorceFile.zip -- Path = SorceFile.zip Type = zip Physical Size = 579479673 Everything is Ok Folders: 2224 Files: 17718 Size: 1312140799 Compressed: 579479673 Kernel Time = 0.656 = 5% 20909 MCycles User Time = 9.390 = 85% Process Time = 10.046 = 91% Virtual Memory = 11 MB...

@igor In addition to the above stats, i tried to benchmark in 7z GUI application. Number of CPU threads shown in AMD env was wrong. The server has 2 sockets and 2 CPU's. The benchmark tool is showing 48 instead of 96(2 x EPYC 7642) whereas in INTEL env the values match with number of physical cores. Please refer the attachment

Attaching crystaldiskmark and cinebench results of intel and amd servers. PS: Both the servers has 96 gb of RAM.

I agree with cpu utilisation factor on amd, less cpu consumption is due to the fact that amd env has more no of threads. There is an another case, let's compare both the environment by extraction and compression time. A Zip file of 640 mb which contains bunch of file types such js, jar and binaries etc is taken of testing. Time taken to extract a file using below command 7z x-bt -bb1 <path-to zip="" file=""> -o"<source-dir>"</source-dir></path-to> Time elapsed intel(xeon silver 4110) - 40s Time elapsed...

AMD EPYC 7642 7-zip doesn't utilise all the available threads

@igor pavlov : The doc file was blocked by the policy of Anti-virus. 7zip executable extracted successfully after disabling Anti-virus. Thanks much !!