gistfile1.txt

$ ./node benchmark/fs/write-stream-throughput.js dur=1
fs/write-stream-throughput.js dur=1 type=buf size=2: 0.058141
fs/write-stream-throughput.js dur=1 type=buf size=1024: 55.152
fs/write-stream-throughput.js dur=1 type=buf size=65535: 99.098
fs/write-stream-throughput.js dur=1 type=buf size=1048576: 74.485
fs/write-stream-throughput.js dur=1 type=asc size=2: 0.054465
fs/write-stream-throughput.js dur=1 type=asc size=1024: 46.233
fs/write-stream-throughput.js dur=1 type=asc size=65535: 144.23
fs/write-stream-throughput.js dur=1 type=asc size=1048576: 129.42
fs/write-stream-throughput.js dur=1 type=utf size=2: 0.054108
fs/write-stream-throughput.js dur=1 type=utf size=1024: 39.867
fs/write-stream-throughput.js dur=1 type=utf size=65535: 110.78
fs/write-stream-throughput.js dur=1 type=utf size=1048576: 95.809

$ ../node-v0.8/node benchmark/fs/write-stream-throughput.js dur=1
fs/write-stream-throughput.js dur=1 type=buf size=2: 0.10760
fs/write-stream-throughput.js dur=1 type=buf size=1024: 51.591
fs/write-stream-throughput.js dur=1 type=buf size=65535: 145.70
fs/write-stream-throughput.js dur=1 type=buf size=1048576: 129.86
fs/write-stream-throughput.js dur=1 type=asc size=2: 0.076652
fs/write-stream-throughput.js dur=1 type=asc size=1024: 34.334
fs/write-stream-throughput.js dur=1 type=asc size=65535: 120.51
fs/write-stream-throughput.js dur=1 type=asc size=1048576: 109.81
fs/write-stream-throughput.js dur=1 type=utf size=2: 0.075759
fs/write-stream-throughput.js dur=1 type=utf size=1024: 21.604
fs/write-stream-throughput.js dur=1 type=utf size=65535: 115.12
fs/write-stream-throughput.js dur=1 type=utf size=1048576: 90.400

$ gcc -o iotest benchmark/io.c && ./iotest
Wrote 1048576000 bytes in 9.462148s using 1024 byte buffers: 105.684248
Wrote 1048576000 bytes in 9.565397s using 4096 byte buffers: 104.543492
Wrote 1048576000 bytes in 10.388883s using 8192 byte buffers: 96.256739
Wrote 1048576000 bytes in 9.728917s using 16384 byte buffers: 102.786364
Wrote 1048576000 bytes in 9.587146s using 32768 byte buffers: 104.306328
Wrote 1048576000 bytes in 9.981552s using 65536 byte buffers: 100.184821
Read 1048576000 bytes in 0.651038s using 1024 byte buffers: 1536.008651mB/s
Read 1048576000 bytes in 0.265541s using 4096 byte buffers: 3765.896792mB/s
Read 1048576000 bytes in 0.206052s using 8192 byte buffers: 4853.143867mB/s
Read 1048576000 bytes in 0.178796s using 16384 byte buffers: 5592.966286mB/s
Read 1048576000 bytes in 0.165311s using 32768 byte buffers: 6049.204227mB/s
Read 1048576000 bytes in 0.159744s using 65536 byte buffers: 6260.016026mB/s