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Re: pipe improvements in snapshot

On Thu, Dec 12, 2002 at 07:32:16AM -0500, Norman Vine wrote:
>Christopher Faylor writes:
>> In the most recent cygwin snapshot (uploading now) I've attempted to
>> work around the 10ms delay in pipe reads.
>< snip >
>> Please check out the latest snapshot and report here if there are
>> problems.  I haven't yet tried this on Windows 9x class systems so it's
>> entirely possible that there is a problem there.
>With a Cygwin CVS tree I built this AM < (2) below > 
>rxvt has problems when configuring a project from a build directory
>     src
>     build
>cd $TOP_DIR/build
>The problems vary from run to run ranging from 'error parsing uname'
>to program hang < recoverable with 'ctrl-C' > making me suspect a
>possible data loss
>Using the gcc option -pipe seems to allow the configure process
>Using the -pipe flag I have not seen the uname error but it does
>eventually hang when actually creating the Makefiles
>This project uses libtool
>With the CVS tree build (1) below I do not experience this
>(1) 10-Dec-2002   7:10:38a    6,683,847  cygwin-20021210.tar.gz
>(2) 12-Dec-2002   6:09:42a    6,688,318  cygwin-20021212.tar.gz
>The times are EST and the tarballs are created by a script that
>does a CVS update, make, make tarball which takes ~20 minutes
>so the CVS update time should be approximately 20 minutes earlier
>Any 'tips' as to how to best debug this appreciated 

- Attach to the hung process with gdb and see where it is hung.

- Provide cygcheck output.

- Run under strace and see if you can infer where hangs or problems
  are occurring.


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