win7 jdk 8 build : fork: retry: Resource temporarily unavailable

[Phil Race]

My Win 7 x 64 showed it had approx 2GB (out of 6GB) memory free when I 
got this message
doing an incremental build :-

## Starting langtools
/cygdrive/c/jdks/jdk8_2d/common/bin/logger.sh: fork: retry: Resource 
temporarily unavailable
/cygdrive/c/jdks/jdk8_2d/common/bin/logger.sh: fork: retry: Resource 
temporarily unavailable
/cygdrive/c/jdks/jdk8_2d/common/bin/logger.sh: fork: retry: Resource 
temporarily unavailable
/cygdrive/c/jdks/jdk8_2d/common/bin/logger.sh: fork: retry: Resource 
temporarily unavailable
/cygdrive/c/jdks/jdk8_2d/common/bin/logger.sh: fork: Resource 
temporarily unavailable
make: *** [langtools-only] Error 254

I wonder if something like this is responsible for full builds often 
needing several tries to
complete as well, even though the errors there seem somewhat random.
If you see below, the build has decided it might use up to 4Gb (if I 
read this right)
which seems  like a lot for a system with only(!) 6GB RAM. But surely it 
would not
hit this limit right at the outset ?

Build config info follows. Its an 8 core Xeon processor ..

Configuration summary:
* Debug level:    release
* JDK variant:    normal
* JVM variants:   server,client
* OpenJDK target: OS: windows, CPU architecture: x86, address length: 32

Tools summary:
* Environment:    cygwin version 1.7.8(0.236/5/3) (root at 
/cygdrive/c/cygwin)
* Boot JDK:       java version "1.7.0_40-ea"  Java(TM) SE Runtime 
Environment (build 1.7.0_40-ea-b35)  Java HotSpot(TM) 64-Bit Server VM 
(build 24.0-b54, mixed mode)   (at /cygdrive/c/progra~1/java/jdk17~1.0_4)
* C Compiler:     Microsoft CL.EXE version 16.00.40219.01 (at 
/cygdrive/c/vs2010/VC/BIN/cl)
* C++ Compiler:   Microsoft CL.EXE version 16.00.40219.01 (at 
/cygdrive/c/vs2010/VC/BIN/cl)

Build performance summary:
* Cores to use:   3
* Memory limit:   4095 MB
* ccache status:  not available for your system

-phil.