socat usage for FIFO speed vs socket speed on localhost
- by Fishy
Hello,
As per a suggestion on stackoverflow, to compare IPC on a single machine using
a) sockets (TCP) on localhost to localhost
b) using FIFOs
(between Java and C)
To answer (a), I used netcat to gauge transfer speed (91 MBytes/sec)[1]
(b) Q: How can I test FIFO write speed using socat?
My approach(where /tmp/gus is created using mkfifo on RHEL):
dd if=/dev/zero of=/tmp/gus bs=1G count=1
but i get:
1073741824 bytes (1.1 GB) copied, 1.1326 seconds, 948 MB/s
Does this mean writing to a FIFO ~10 times faster? Or is my experiment completely wrong ?
Thank you
Sporsi
[1] From machine A to B across 1Gbps link, this number dropped to ~80 MBytes/sec - I expected localhost to be much higher ...
