MELSRV COMPUTER ARTICLES DATABASES Z39.50 SERVER STATISTICS
Time period: 05/11/02 through 05/17/02
1.0 SUMMARY STATISTICS
_______________________
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 84 220
2-4 a.m. 45 130
4-6 a.m. 7 11
6-8 a.m. 33 144
8-10 a.m. 104 202
10-12 a.m. 268 973
12-2 p.m. 408 1,897
2-4 p.m. 475 2,399
4-6 p.m. 329 1,260
6-8 p.m. 256 830
8-10 p.m. 208 923
10-12 p.m. 145 684
__________ _____________ _________________
Total: 2,362 9,673
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 2
Davis 6
Irvine 2
Los Angeles 3
Riverside 1
San Diego 14
San Francisco 0
Santa Barbara 0
Santa Cruz 0
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 727
Searchlight 1,539
Other - UC 51
Other-Network UC 17
_____
2,362
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2
Davis 0
Irvine 1
Los Angeles 0
Riverside 5
San Diego 35
San Francisco 0
Santa Barbara 0
Santa Cruz 0
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 9,284
Searchlight 7
Other - UC 302
Other-Network UC 37
_____
9,673
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 0.4
Standard deviation in seconds 1.7
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 COMPUTER ARTICLES Database Detailed Statistics
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Median session length (minutes:seconds) 0:03
Average session length (minutes:seconds) 4:34
Longest session recorded (minutes:seconds) 81:04
Average number of searches completed per session 0.0
Retrievals per search - median 0.0
Retrievals per search - average 663.2
Retrievals per search - standard deviation 6236.1
Percent of searches completed with 0 results 59.7%
Percent of searches entered that are long 0.1%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 2,362 37.6%
PRESENT 2,010 32.0%
INIT or CLOSE 1,909 30.4%
OTHER 4 0.1%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 98 3.7% 68 69.4% 2 7.2 12.9
TITLE WORD 122 4.6% 74 60.7% 7 507.6 2132.7
EXACT TITLE 18 0.7% 17 94.4% 1 1.0 0.0
JOURNAL TITLE 31 1.2% 27 87.1% 2,008 37590.3 72356.5
EXACT JOURNAL 46 1.7% 7 15.2% 1,300 9251.8 15623.3
SUBJECT WORD 109 4.1% 73 67.0% 21 1930.5 9289.3
EXACT SUBJECT 29 1.1% 8 27.6% 670 3474.2 8175.5
KEYWORD 1,951 73.7% 1,165 59.7% 10 1130.3 8209.7
DATE 32 1.2% 8 25.0% 4 23.3 47.5
ADDED SINCE 5 0.2% 4 80.0% 3 3.0 0.0
PUB TYPE 11 0.4% 7 63.6% 6 36.3 64.0
SUBFILE 3 0.1% 3 100% 0 0.0 0.0
ID 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
SIC 0 0.0% 0 0.0% 0 0.0 0.0
ILLUS 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 48 1.8% 8 16.7% 13 87.0 189.8
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 143 5.4% 46 32.2% 39 4849.2 22743.9
Other indexes 2 0.1% 2 100% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 231 9.8% 88 38.1% 17 3311.7 18834.7
Single 2,131 90.2% 1,322 62.0% 10 1351.0 6986.3
PRESENT commands, by type:
MARC 51.2%
OPAC 28.9%
SCPmm/dd srv.comp MELSRV COMPUTER ARTICLES DATABASES Z39.50 SERVER STATISTICS (w