.(z C
.(c
.TS
center, tab(;);
| c s s s s |
| c | c | c | c | c |
| n | n | n | n | n |.
.br
_
Server Traffic With Cache Consistency
_
Client Cache Size;Blocks Read;Blocks Written;Total;Traffic Ratio
=
0 Mbyte;445815;172546;618361;100%
_
0.5 Mbyte;102469;96866;199335;32%
_
1 Mbyte;84017;96796;180813;29%
_
2 Mbytes;77445;96796;174241;28%
_
4 Mbytes;75322;96796;172118;28%
_
8 Mbytes;75088;96796;171884;28%
_
.TE
.)c
.(q
\fBTable 1\fR.
Client caching simulation results, based on trace data from BSD study.
Each user was treated as a different client, with client caching and
a 30-second delayed-write policy.  The table
shows the number of read and write requests made by client caches to
the server, for different client cache sizes.
The ``Traffic Ratio'' column gives the total server traffic
as a percentage of the total file traffic presented to the client caches.
Write-sharing is infrequent: of the write traffic, 4041 blocks were
written through because of
concurrent write-sharing and 6887 blocks were flushed back because
of sequential write-sharing.
.)q
.)z