MELSRV COMPUTER ARTICLES DATABASES Z39.50 SERVER STATISTICS
Time period: 03/01/99 through 03/31/99
1.0 SUMMARY STATISTICS
_______________________
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 187 5,489
2-4 a.m. 68 1,140
4-6 a.m. 26 135
6-8 a.m. 80 1,083
8-10 a.m. 388 5,056
10-12 a.m. 1,022 11,736
12-2 p.m. 1,259 16,737
2-4 p.m. 1,404 17,214
4-6 p.m. 1,082 16,562
6-8 p.m. 649 13,239
8-10 p.m. 564 10,600
10-12 p.m. 452 10,561
__________ _____________ _________________
Total: 7,181 109,552
1.1 SEARCH commands
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Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 16
Davis 18
Irvine 4
Los Angeles 8
Riverside 0
San Diego 1,201
San Francisco 20
Santa Barbara 1
Santa Cruz 96
Lawrence Berkeley 0
Lawrence Livermore 4
Los Alamos 0
MELWEB 5,027
Other - UC 755
Other-Network UC 31
_____
7,181
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 0
Davis 422
Irvine 53
Los Angeles 28
Riverside 0
San Diego 1
San Francisco 132
Santa Barbara 0
Santa Cruz 130
Lawrence Berkeley 0
Lawrence Livermore 24
Los Alamos 0
MELWEB 106,447
Other - UC 2,119
Other-Network UC 196
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109,552
1.3 Response time
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Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 0.9
Standard deviation in seconds 4.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.6
2.0 COMPUTER ARTICLES Database Detailed Statistics
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Median session length (minutes:seconds) 0:02
Average session length (minutes:seconds) 12:22
Longest session recorded (minutes:seconds) 161:40
Average number of searches completed per session 0.0
Retrievals per search - median 1.0
Retrievals per search - average 3051.8
Retrievals per search - standard deviation 31244
Percent of searches completed with 0 results 45.6%
Percent of searches entered that are long 0.2%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 7,180 22.5%
PRESENT 21,874 68.6%
INIT or CLOSE 2,727 8.6%
OTHER 109 0.3%
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 571 6.5% 426 74.6% 2 48.7 152.9
TITLE WORD 912 10.3% 532 58.3% 14 844.0 4281.6
EXACT TITLE 76 0.9% 62 81.6% 5 162.1 434.0
JOURNAL TITLE 211 2.4% 174 82.5% 113 2485.1 7382.9
EXACT JOURNAL 217 2.5% 35 16.1% 3,131 11006.8 16621.6
SUBJECT WORD 907 10.3% 568 62.6% 27 3449.1 19801.6
EXACT SUBJECT 374 4.2% 133 35.6% 44 1297.4 3849.8
KEYWORD 4,425 50.1% 1,679 37.9% 43 6763.4 49719.9
DATE 160 1.8% 47 29.4% 21 328.5 1397.7
ADDED SINCE 14 0.2% 7 50.0% 21 74.9 103.5
PUB TYPE 103 1.2% 41 39.8% 30 193.9 422.2
SUBFILE 24 0.3% 17 70.8% 117 24018.6 63119.3
ID 1 0.0% 0 0.0% 1 1.0 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 128 1.4% 39 30.5% 46 6665.7 44404.3
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 715 8.1% 362 50.6% 27 3644.8 22404.3
Other indexes 0 0.0% 0 0.0% 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 1,396 19.4% 701 50.2% 28 3164.6 23469.5
Single 5,784 80.6% 2,574 44.5% 46 6142.0 45232.3
PRESENT commands, by type:
MARC 45.6%
OPAC 26.4%