While i was trying to debug some of the -j2 hangs using cygwin-1.1.5-7 (knowing that Chris has already reported he knows what the problem is and is working on it), i started using filemon (a tool for monitoring read/writes to the filesystem) to see what cygwin was doing at the moment of the hang, just for my own edification. I filtered out all noise except traffic generated by bash or make. There was still a great deal of noise, but then i noticed a strange and repetitive set of entries: buffer overflows coming from IRP_MJ_QUERY_VOLUME_INFORMATION and IRP_MJ_QUERY_INFORMATION (and only these two calls, i might add; no other kinds of calls generated this overflow). These messages were generated by both bash and make activity, as seen by the examples below: 1059 0.00000649 bash.exe IRP_MJ_QUERY_VOLUME_INFORMATION C:\cygwin\bin\make.exe BUFFER OVERFLOW FileFsVolumeInformation 1060 0.00001067 bash.exe IRP_MJ_QUERY_INFORMATION C:\cygwin\bin\make.exe BUFFER OVERFLOW FileAllInformation 1456 0.00000568 make.exe IRP_MJ_QUERY_VOLUME_INFORMATION C:\cygwin\usr\local\include BUFFER OVERFLOW FileFsVolumeInformation 1457 0.00001077 make.exe IRP_MJ_QUERY_INFORMATION C:\cygwin\usr\local\include BUFFER OVERFLOW FileAllInformation There is also a pattern of cygwin creating a directory (at least, if i read the IRP_MJ_CREATE correctly) but then getting an INVALID_DEVICE error when trying to read it: 1033846 0.00004414 bash.exe IRP_MJ_CREATE C:\cygwin\scratch\jpollock\build-installer\socket SUCCESS Attributes: N Options: Open 1033847 0.00000532 bash.exe IRP_MJ_READ C:\cygwin\scratch\jpollock\build-installer\socket INVALID DEVICE REQUEST Offset: 0 Length: 3 And there's also some interesting attempts by cygwin to check for .exe versions of some directories: 21409 0.00008309 make.exe IRP_MJ_CREATE U:\jpollock\checkouts\curl-installer\gfx\Texture\RCS.exe SUCCESS Attributes: Any Options: Open 21410 0.00110612 make.exe FASTIO_QUERY_BASIC_INFO U:\jpollock\checkouts\curl-installer\gfx\Texture\RCS.exe NO SUCH FILE Attributes: Error I was hoping someone could help me understand these calls. Thanks much! John -- Want to unsubscribe from this list? Send a message to [EMAIL PROTECTED]
