Data is read in 1-byte chunks causing performance problem with IBIS scripting

This was discovered upon investigation of IBIS P1 SD Ticket #5185188 Radiance case# 65559978

A performance issue occurs because it reads data in 1 byte chunks in the 1st instance.

writing 1 byte down this fifo

   7: S_IFIFO mode:0000 dev:354,0 ino:33852546 uid:55413 gid:15 size:0
      O_RDWR|O_NONBLOCK

reads by file descriptor of the java_vm

               17 32 10
                5 64 13
                5 96 18
               18 5 23
               20 5 29
                5 4 37
                5 128 159
                6 100 197
                5 32 1113
               11 1 11385

  11: S_IFSOCK mode:0666 dev:352,0 ino:14930 uid:0 gid:0 size:0
      O_RDWR
        SOCK_STREAM
        SO_SNDBUF(16384),SO_RCVBUF(5120)
        sockname: AF_UNIX

So large number of single byte reads on a socket and the coder must at some point be asking for 1 byte, rather than lots.

              libc.so.1`_read+0x8
              libjvm.so`JVM_Read+0xb8
              StubRoutines (1)
              libjava.so`Java_java_io_FileInputStream_read+0x30
              java/io/FileInputStream.read*
              sun/plugin/navig/motif/Plugin.readString*
              sun/plugin/navig/motif/Plugin.doit
              sun/plugin/navig/motif/Plugin.start
              StubRoutines (1)
              libjvm.so`__1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_pnGThread__v_+0x5b8
              libjvm.so`jni_CallStaticVoidMethod+0x514
              java_vm`main+0x710
              java_vm`_start+0x108
               87

              libc.so.1`_read+0x8
              libjvm.so`JVM_Read+0xb8
              StubRoutines (1)
              libjava.so`Java_java_io_FileInputStream_read+0x30
              java/io/FileInputStream.read*
              sun/plugin/navig/motif/Plugin.readString*
              sun/plugin/navig/motif/Plugin.doit
              sun/plugin/navig/motif/Plugin.start
              StubRoutines (1)
              libjvm.so`__1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_pnGThread__v_+0x5b8
              libjvm.so`jni_CallStaticVoidMethod+0x514
              java_vm`main+0x710
              java_vm`_start+0x108
              230

              libc.so.1`_read+0x8
              libjvm.so`JVM_Read+0xb8
              StubRoutines (1)
              libjava.so`Java_java_io_FileInputStream_read+0x30
              java/io/FileInputStream.read*
              sun/plugin/navig/motif/Plugin.readString*
              sun/plugin/navig/motif/Plugin.doit
              sun/plugin/navig/motif/Plugin.start
              StubRoutines (1)
              libjvm.so`__1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_pnGThread__v_+0x5b8
              libjvm.so`jni_CallStaticVoidMethod+0x514
              java_vm`main+0x710
              java_vm`_start+0x108
            10951