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timer entropy daemon

This program feeds the /dev/random device with entropy-data (random values) read from timers.
It does this by measuring how much longer or shorter a sleep takes (this fluctuates a little - microseconds). The time for a sleep jitters due to that the frequency of the clocks of the timers change when they become colder or hotter (and a few other parameters).
This program does not require any extra hardware.
It produces around 500 bits per second.
This program is also usable with virtualized systems (KVM has virtio-rnd, you can then still use this program on the host).

Download

Latest stable release:

timer_entropyd-0.1.tgz

Changes

0.1: initial release

bps

Not every system produces the same amount of bits per second.
Please note: bps is bits per second, not bytes.

motherboard or system	processor	clockspeed	bps
Intel DG965WH	Intel Q6600	2.4GHz	2268
Asus P5K WS	Intel E6600	2.4GHz	358
Gigabyte 965G-DS3	Intel Q9450	2.66GHz	1751
	Via Nehemiah C3	530MHz	2442 (*1)
	Via C7	1.8GHz	1491 (*1)
Phoenix	AMD Athlon XP	1.6GHz	43024
ASUS A8N-E	AMD Athlon 64 X2 4200+	2.3GHz	117
ASUS M3A	AMD Athlon 64 X2 4800+	2.6GHz	112
Via TUV4X	Tualatin Celeron III	800 Mhz	2447
IBM xSeries 330 8654-52G	P3 Coppermine	1GHz	4440
IBM x3800 8865-2RG	Intel Xeon	3.6GHz	3238
IBM 9113-550	Power5 (in an LPAR)	1.5GHz	23
SGI O200 (running IRIX)	MIPS R12000	270MHz	191
PowerEdge R200 (running FreeBSD)	Intel Xeon CPU 3065	2.3GHz	189
VMware Workstation on lenovo t61	i386 emulation	2.4GHz	245

*1: has an integrated rng as well

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