MELSRV PSYCINFO DATABASES Z39.50 SERVER STATISTICS
Time period: 07/01/99 through 07/31/99
1.0 SUMMARY STATISTICS
_______________________
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 391 15,476
2-4 a.m. 548 6,934
4-6 a.m. 102 2,596
6-8 a.m. 288 10,072
8-10 a.m. 2,045 90,073
10-12 a.m. 5,025 250,410
12-2 p.m. 5,929 295,772
2-4 p.m. 6,870 313,314
4-6 p.m. 5,136 251,020
6-8 p.m. 2,527 119,310
8-10 p.m. 1,077 51,430
10-12 p.m. 789 42,049
__________ _____________ _________________
Total: 30,727 1,448,456
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 494
Davis 461
Irvine 90
Los Angeles 109
Riverside 0
San Diego 948
San Francisco 238
Santa Barbara 55
Santa Cruz 234
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 27,168
Other - UC 585
Other-Network UC 345
_____
30,727
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,355
Davis 1,906
Irvine 2,062
Los Angeles 2,050
Riverside 0
San Diego 2,316
San Francisco 3,860
Santa Barbara 722
Santa Cruz 813
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 1,417,787
Other - UC 8,921
Other-Network UC 3,664
_____
1,448,456
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.5
Standard deviation in seconds 8.4
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) 25:09
Average session length (minutes:seconds) 28:32
Longest session recorded (minutes:seconds) 239:23
Average number of searches completed per session 0.0
Retrievals per search - median 9.0
Retrievals per search - average 857.0
Retrievals per search - standard deviation 6846.2
Percent of searches completed with 0 results 21.4%
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 30,727 9.8%
PRESENT 273,327 87.2%
INIT or CLOSE 8,478 2.7%
OTHER 841 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 10,344 21.9% 2,293 22.2% 8 61.3 572.3
TITLE WORD 3,005 6.4% 964 32.1% 3 162.4 1514.2
EXACT TITLE 518 1.1% 301 58.1% 1 11.9 40.7
JOURNAL 2,124 4.5% 804 37.9% 6 1190.9 8987.8
EXACT JOURNAL 607 1.3% 225 37.1% 65 938.6 1957.8
SUBJECT 1,845 3.9% 740 40.1% 64 2185.5 9265.8
EXACT SUBJECT 553 1.2% 206 37.3% 149 2049.1 8335.5
KEYWORD 16,239 34.5% 2,575 15.9% 34 1514.7 9341.7
AUTHOR AFFIL 113 0.2% 67 59.3% 17 504.7 1699.8
FORM/PUB TYPE 1,151 2.4% 266 23.1% 44 1105.2 5481.5
DATE 2,181 4.6% 478 21.9% 15 452.5 3547.8
ADDED 379 0.8% 328 86.5% 2 31.8 65.4
CONFERENCE 5 0.0% 2 40.0% 10 25.3 28.3
LANGUAGE 3,230 6.9% 694 21.5% 69 1447.1 6963.2
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 4 0.0% 3 75.0% 1 1.0 0.0
ID NUMBER 6 0.0% 6 100% 0 0.0 0.0
XXS 61 0.1% 17 27.9% 110 1971.4 5333.5
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 174 0.4% 40 23.0% 138 2021.7 4971.5
AT 3,665 7.8% 842 23.0% 48 1589.0 8867.5
Other indexes 919 1.9% 235 25.6% 54 895.1 5539.4
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 10,202 33.2% 2,813 27.6% 14 937.8 6446.3
Single 20,525 66.8% 3,769 18.4% 26 1158.0 8200.5
PRESENT commands, by type:
MARC 43.4%
OPAC 40.2%