Running Global Projects
Updates and Synchronisation
: Update Timings
Update Timings
It is extremely difficult to predict the length of time that an update will take to complete. It will depend upon the bandwidth that is dedicated to the update process at the time it is run. Therefore, if the line is shared with other comms programs (mail, internet, etc), the update performance will be affected. The timings described below were undertaken on a line that had no other process competing, and a line that was extremely clean - that is, its rate of failure would be near zero. On a normal WAN line, its collision and failure rate would not achieve anywhere near such a low level.
Line Speed
Time
Rate of Transfer
Rate of Transfer
(bits per sec)
(H.M:S)
(bytes per sec)
(Kbytes per hour)
38,400
1.41:18
3,734
13,128
64,000
0.57:15
6,607
23,229
125,000
0.30:17
12,491
43,913
250,000
0.16:24
23,065
81,088
500,000
0.09:06
41,568
146,136
1,000,000
0.06:07
61,842
217,413
2,000,000
0.04:04
93,016
327,010
4,000,000
0.02:26
155,452
546,510
These test timings were taken when propagating 11080 pages (22695936 bytes) of data between two machines.
1974 to current year.
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