### 6 Routine Timings

Several operations are tested below on all architectures on which NBS has been extensively tested. The figures given are for a noticeboard with 100 items all at the same level and are the lowest measured values of CPU microseconds:

 Test # Test name $\mu$VAX $3500$ DEC Alpha AXP 3000/400 SPARCstation 10 0 Define, save and find noticeboard 820000 16666 16666 1 Scalar assignment 1 0.1 - 2 Put scalar 36 2.0 1.6 3 Get scalar 34 1.9 1.0 4 Move 10 longwords directly 17 0.3 0.6 5 Put 10 longword array 44 2.2 3.3 6 Get 10 longword array 43 2.2 3.2 7 Move 1024 longwords directly 591 16 87 8 Put 1024 longword array 670 33 89 9 Get 1024 longword array 646 32 89 10 Find 100th item by position 277 35 23 11 Find 100th item by name 544 58 31 12 Enquire name 42 1.2 2.5 13 Enquire size 15 0.7 1.0

These are fairly consistent with the times reported for the MON system. They are also pretty close to those for V2.2 of the noticeboard system and are better in some cases, presumably partly because of the greater use of inline code in V2.3.1 onwards. The speed of the UNIX machine is particularly noticeable on file related operations where the speed up is an order of magnitude greater those operations simply involved with moving data around.