MELSRV PSYCINFO DATABASES Z39.50 SERVER STATISTICS
Time period: 08/01/99 through 08/31/99
1.0 SUMMARY STATISTICS
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Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 850 11,233
2-4 a.m. 528 3,596
4-6 a.m. 294 710
6-8 a.m. 466 4,327
8-10 a.m. 1,612 48,103
10-12 a.m. 3,963 159,923
12-2 p.m. 4,611 195,402
2-4 p.m. 4,805 214,999
4-6 p.m. 3,713 136,821
6-8 p.m. 1,562 80,856
8-10 p.m. 1,156 44,003
10-12 p.m. 861 34,623
__________ _____________ _________________
Total: 24,421 934,596
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 232
Davis 432
Irvine 38
Los Angeles 378
Riverside 0
San Diego 5,007
San Francisco 191
Santa Barbara 42
Santa Cruz 155
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 17,203
Other - UC 477
Other-Network UC 266
_____
24,421
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,700
Davis 1,488
Irvine 673
Los Angeles 8,387
Riverside 0
San Diego 3,102
San Francisco 8,290
Santa Barbara 374
Santa Cruz 402
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 900,478
Other - UC 6,348
Other-Network UC 2,354
_____
934,596
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 1.0
Standard deviation in seconds 7.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.4
Standard deviation in seconds 1.3
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 0:10
Average session length (minutes:seconds) 15:47
Longest session recorded (minutes:seconds) 254:10
Average number of searches completed per session 0.0
Retrievals per search - median 5.0
Retrievals per search - average 564.0
Retrievals per search - standard deviation 5014.8
Percent of searches completed with 0 results 28.5%
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 24,421 11.2%
PRESENT 182,121 83.5%
INIT or CLOSE 10,002 4.6%
OTHER 1,496 0.7%
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 8,337 23.7% 1,657 19.9% 7 43.1 219.0
TITLE WORD 2,730 7.8% 694 25.4% 2 103.2 501.2
EXACT TITLE 518 1.5% 259 50.0% 1 5.0 21.5
JOURNAL 1,725 4.9% 582 33.7% 4 761.2 6644.2
EXACT JOURNAL 429 1.2% 187 43.6% 59 694.0 1534.0
SUBJECT 1,314 3.7% 572 43.5% 52 1707.4 6514.2
EXACT SUBJECT 275 0.8% 106 38.5% 231 1737.8 4800.5
KEYWORD 12,905 36.7% 4,005 31.0% 51 1218.2 7641.7
AUTHOR AFFIL 36 0.1% 25 69.4% 13 21.3 23.7
FORM/PUB TYPE 701 2.0% 242 34.5% 39 976.2 3800.2
DATE 1,591 4.5% 343 21.6% 18 258.6 1305.5
ADDED 306 0.9% 288 94.1% 7 20.3 30.9
CONFERENCE 14 0.0% 9 64.3% 21 31.8 33.4
LANGUAGE 1,861 5.3% 432 23.2% 72 1011.7 3956.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 4 0.0% 4 100% 0 0.0 0.0
XXS 22 0.1% 11 50.0% 56 268.4 525.5
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 136 0.4% 42 30.9% 39 592.9 3616.3
AT 1,850 5.3% 388 21.0% 38 977.5 4529.7
Other indexes 380 1.1% 95 25.0% 79 742.6 2745.3
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 7,271 29.8% 1,905 26.2% 8 461.2 2830.9
Single 17,150 70.2% 5,052 29.5% 36 933.9 6847.4
PRESENT commands, by type:
MARC 48.9%
OPAC 33.6%