https://community.hpe.com/t5/operating-system-hp-ux/java-runtime-getruntime-exec/m-p/4529894#M678516 You can use tusc to figure out what system call is being made. Mon, 09 Nov 2009 07:09:42 GMT Dennis Handly 2009-11-09T07:09:42Z https://community.hpe.com/t5/operating-system-hp-ux/java-runtime-getruntime-exec/m-p/4529893#M678515 My environment: 11iv31 and 11iv23 IA64, HP JDK 6.0.01.<BR /><BR />I have a J2EE server which needs about 1G of heap and calls Runtime.getRuntime().exec() to get the result of lanscan(1M).<BR /><BR />My concern is about the cost (both memory and swap space) during exec(), does anyone know if Runtime.getRuntime().exec() is implemented using fork(2) or vfork(2)? Mon, 09 Nov 2009 02:03:47 GMT https://community.hpe.com/t5/operating-system-hp-ux/java-runtime-getruntime-exec/m-p/4529893#M678515 David PT 2009-11-09T02:03:47Z https://community.hpe.com/t5/operating-system-hp-ux/java-runtime-getruntime-exec/m-p/4529894#M678516 You can use tusc to figure out what system call is being made. Mon, 09 Nov 2009 07:09:42 GMT https://community.hpe.com/t5/operating-system-hp-ux/java-runtime-getruntime-exec/m-p/4529894#M678516 Dennis Handly 2009-11-09T07:09:42Z