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Why is Cygwin suddenly so slow?

April 26, 2017Cygwin slow suddenly

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Why is Cygwin suddenly so slow?

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If you recently upgraded and suddenly every command takes a very long time, then something is probably attempting to access a network share. You may have the obsolete //c notation in your PATH or startup files. This now means the network share c, which will slow things down tremendously if it does not exist. Using //c (for C:) doesn’t work anymore. (Similarly for any drive letter, e.g. //z for Z:) This “feature” has long been deprecated, and no longer works at all in the latest release. As of release 1.3.3, //c now means the network share c. For a detailed discussion of why this change was made, and how deal with it now, refer to http://sources.redhat.com/ml/cygwin/2001-09/msg00014.html.