stream: lazy allocate back pressure buffer
streams/writable-manywrites.js len=1024 callback='no' writev='no' sync='no' n=100000 * 7.48 % ±6.60% ±8.78% ±11.43%
streams/writable-manywrites.js len=1024 callback='no' writev='no' sync='yes' n=100000 *** 8.19 % ±3.39% ±4.51% ±5.87%
streams/writable-manywrites.js len=1024 callback='no' writev='yes' sync='no' n=100000 -1.00 % ±3.29% ±4.43% ±5.86%
streams/writable-manywrites.js len=1024 callback='no' writev='yes' sync='yes' n=100000 *** 12.17 % ±2.83% ±3.76% ±4.90%
streams/writable-manywrites.js len=1024 callback='yes' writev='no' sync='no' n=100000 * 3.61 % ±3.15% ±4.24% ±5.60%
streams/writable-manywrites.js len=1024 callback='yes' writev='no' sync='yes' n=100000 *** 13.57 % ±4.37% ±5.87% ±7.77%
streams/writable-manywrites.js len=1024 callback='yes' writev='yes' sync='no' n=100000 1.32 % ±7.77% ±10.34% ±13.45%
streams/writable-manywrites.js len=1024 callback='yes' writev='yes' sync='yes' n=100000 *** 21.97 % ±6.29% ±8.38% ±10.93%
streams/writable-manywrites.js len=32768 callback='no' writev='no' sync='no' n=100000 4.20 % ±7.15% ±9.53% ±12.43%
streams/writable-manywrites.js len=32768 callback='no' writev='no' sync='yes' n=100000 4.54 % ±5.10% ±6.87% ±9.11%
streams/writable-manywrites.js len=32768 callback='no' writev='yes' sync='no' n=100000 *** 5.74 % ±2.37% ±3.15% ±4.11%
streams/writable-manywrites.js len=32768 callback='no' writev='yes' sync='yes' n=100000 *** 9.26 % ±4.66% ±6.22% ±8.11%
streams/writable-manywrites.js len=32768 callback='yes' writev='no' sync='no' n=100000 * 4.16 % ±3.80% ±5.10% ±6.72%
streams/writable-manywrites.js len=32768 callback='yes' writev='no' sync='yes' n=100000 *** 11.19 % ±4.06% ±5.44% ±7.16%
streams/writable-manywrites.js len=32768 callback='yes' writev='yes' sync='no' n=100000 * 4.35 % ±4.12% ±5.52% ±7.28%
streams/writable-manywrites.js len=32768 callback='yes' writev='yes' sync='yes' n=100000 * 5.89 % ±4.74% ±6.35% ±8.35%