Just tests a very simple command like:
while true; do bash -c "echo hello"; done
You will find how much slow the bash in Cygwin is. Does anybody know why?
It's a fresh install of cygwin 1.7 on win7.
thanks to Jared's testing idea, I modified the command to this(adds bash -c):
time for i in {1..10} ; do bash -c "echo Hello" ; done
Hello
...
real 0m7.711s //it's the problem
user 0m0.091s
sys 0m0.476s
For Windows Defender:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender]
"DisableAntiSpyware"=dword:00000001
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection]
"DisableBehaviorMonitoring"=dword:00000001
"DisableOnAccessProtection"=dword:00000001
"DisableScanOnRealtimeEnable"=dword:00000001
or less dramatically:
powershell -Command Add-MpPreference -ExclusionPath "C:\opt\cygwin64"
powershell -Command Add-MpPreference -ExclusionPath "C:\home"
powershell -Command Add-MpPreference -ExclusionProcess "git.exe"
powershell -Command Add-MpPreference -ExclusionExtension ".c"
powershell -Command Add-MpPreference -ExclusionExtension ".cpp"
powershell -Command Add-MpPreference -ExclusionExtension ".cxx"
For Sophos:
REG ADD "HKLM\SYSTEM\CurrentControlSet\Services\Sophos Endpoint Defense\Scanning\Config" /v "OnAccessExcludeFilePaths" /t REG_MULTI_SZ /d "C:\Program Files (x86)\Sophos\Sophos Anti-Virus\\0C:\home\\0D:\Video\\" /f
REG ADD "HKLM\SYSTEM\CurrentControlSet\Services\Sophos Endpoint Defense\Scanning\Config" /v "OnAccessExcludeProcessPaths" /t REG_MULTI_SZ /d "C:\opt\cygwin64\\" /f