MELSRV PSYCINFO DATABASES Z39.50 SERVER STATISTICS
Time period: 04/01/99 through 04/30/99
1.0 SUMMARY STATISTICS
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Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 862 29,981
2-4 a.m. 246 8,322
4-6 a.m. 122 3,688
6-8 a.m. 318 11,211
8-10 a.m. 3,120 110,795
10-12 a.m. 7,358 279,747
12-2 p.m. 9,999 357,398
2-4 p.m. 10,343 389,875
4-6 p.m. 7,564 295,666
6-8 p.m. 4,911 183,201
8-10 p.m. 3,345 134,469
10-12 p.m. 2,284 90,891
__________ _____________ _________________
Total: 50,472 1,895,244
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 398
Davis 43
Irvine 102
Los Angeles 271
Riverside 0
San Diego 1,191
San Francisco 359
Santa Barbara 32
Santa Cruz 204
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 45,531
Other - UC 1,695
Other-Network UC 646
_____
50,472
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 7,336
Davis 526
Irvine 1,569
Los Angeles 10,814
Riverside 0
San Diego 2,833
San Francisco 5,395
Santa Barbara 193
Santa Cruz 1,707
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 1,837,224
Other - UC 23,659
Other-Network UC 3,988
_____
1,895,244
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 3.8
Standard deviation in seconds 9.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 26:36
Average session length (minutes:seconds) 30:19
Longest session recorded (minutes:seconds) 346:45
Average number of searches completed per session 0.0
Retrievals per search - median 10.0
Retrievals per search - average 1058.7
Retrievals per search - standard deviation 8275.7
Percent of searches completed with 0 results 25.7%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 50,472 11.0%
PRESENT 395,679 86.3%
INIT or CLOSE 11,648 2.5%
OTHER 736 0.2%
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 13,129 16.0% 3,555 27.1% 10 92.8 1426.4
TITLE WORD 4,726 5.8% 1,804 38.2% 4 269.0 3123.6
EXACT TITLE 1,074 1.3% 662 61.6% 1 10.0 101.7
JOURNAL 2,902 3.5% 1,284 44.2% 8 2040.9 13965.2
EXACT JOURNAL 1,158 1.4% 449 38.8% 86 1352.2 8253.7
SUBJECT 4,921 6.0% 2,148 43.6% 61 2281.1 13299.3
EXACT SUBJECT 1,610 2.0% 561 34.8% 116 2117.3 9333.5
KEYWORD 28,205 34.5% 5,606 19.9% 50 1741.1 10418.9
AUTHOR AFFIL 149 0.2% 121 81.2% 13 81.8 282.7
FORM/PUB TYPE 2,893 3.5% 788 27.2% 42 840.1 6009.7
DATE 3,608 4.4% 988 27.4% 20 446.5 2632.3
ADDED 172 0.2% 140 81.4% 4 146.0 488.7
CONFERENCE 7 0.0% 5 71.4% 4 4.0 4.2
LANGUAGE 6,879 8.4% 1,805 26.2% 89 2025.4 10261.0
ISSN 4 0.0% 1 25.0% 6,964 6964.0 0.0
ISBN 2 0.0% 1 50.0% 1 1.0 0.0
ID NUMBER 9 0.0% 9 100% 0 0.0 0.0
XXS 119 0.1% 30 25.2% 478 6471.0 14614.7
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 483 0.6% 115 23.8% 97 1006.0 3784.2
AT 8,080 9.9% 2,028 25.1% 69 1667.0 7388.6
Other indexes 1,720 2.1% 503 29.2% 62 947.2 6446.8
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 18,133 35.9% 5,429 29.9% 29 1248.2 7513.2
Single 32,339 64.1% 7,554 23.4% 36 1516.2 10474.8
PRESENT commands, by type:
MARC 43.6%
OPAC 42.1%