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Results

The running times for the tests are listed in Figures 7.2 and 7.3. The times are averages for at least two test runs. The $\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO and TACO tests were performed using the AMIGOS machines and the $\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$, NFS, and UNIX tests were performed using the hp9000s700 machines (see previous section).

Table 7.2: Running times (in seconds) for reading

NO.	TEST	SYSTEM	TIME
1c	Not cached, fetch, fully connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO TACO	5 2
		$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$ NFS	10 <1
1d	Cached, acknowledge, fully connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO	1
		$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$	5
1f	Cached, disconnected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO TACO	<1 <1
		$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$ UNIX	1 <1
1h	Cached, acknowledge & lock, fully connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO	2
		$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$	6
2c	Not cached, fetch, weakly connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO	1021
		TACO	982
2d	Cached, acknowledge, weakly connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO	50
2e	Cached, weakly connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO	25
2f	Cached, acknowledge & lock, weakly connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO	49

Table 7.3: Running times (in seconds) for writing

NO.	TEST	SYSTEM	TIME
3c	Not cached, fetch and send, fully connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO TACO	6 5
		$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$ NFS	15 2
3e	Cached, disconnected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO TACO	<1 <1
		$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$ UNIX	1 <1
3g	Cached, send, fully connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO TACO	6 2
		$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$	16
4c	Not cached, fetch and send, weakly connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO TACO	2061 2009
4d	Cached, send, weakly connected	$\mathcal{P}$$e$$\mathcal{S}$$t$$\mathcal{O}$+TACO TACO	1033 1003

It may come as a surprise that some of the running times on the relatively small AMIGOS machines are less than those from the big hp9000s700 machines. It should probably be contributed to the fact that during testing I had the AMIGOS machines (and the full network bandwidth) for myself whereas the hp9000s700 machines (and the network bandwidth) were shared with up to 30-40 (eager) undergraduate students!

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