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33 performance tuning required of a good system.  We found that
34 the distributed system spent 10-20% more time in the kernel than
37 system in a general timesharing environment.
39 Changes made to the system since the 4.2BSD distribution have
41 added system overhead by replacing old algorithms
46 in the system by nearly 9%.
49 has allowed the system to avoid a large amount of software interrupt
50 processing.  Observations show that the system is forced to
54 changes, combined with many bug fixes, make the system much more
56 The 4.3BSD Berkeley UNIX system now appears
59 and file system facilities.  
66 his code for cacheing system wide names and searching the process table.
71 into his production system and reported back fixes to the
79 ideas, information, and work while the system was undergoing change.
86 .IP [Cabrera84] 20
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106 Computer System Research Group, U.C. Berkeley. 
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114 ``UNIX System V and 4BSD Performance,''
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141 Computer System Research Group, U.C. Berkeley. 
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148 ``The UNIX Time-Sharing System'',
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154 .IP [Walsh84] 20