MELSRV PSYCINFO DATABASES Z39.50 SERVER STATISTICS
Time period: 01/01/99 through 01/31/99
1.0 SUMMARY STATISTICS
_______________________
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 494 24,401
2-4 a.m. 182 7,593
4-6 a.m. 111 6,821
6-8 a.m. 215 12,907
8-10 a.m. 2,116 94,158
10-12 a.m. 6,364 252,816
12-2 p.m. 7,262 303,769
2-4 p.m. 8,348 346,901
4-6 p.m. 6,157 264,657
6-8 p.m. 3,223 166,392
8-10 p.m. 2,598 119,567
10-12 p.m. 1,444 90,518
__________ _____________ _________________
Total: 38,514 1,690,500
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 227
Davis 73
Irvine 63
Los Angeles 253
Riverside 0
San Diego 743
San Francisco 211
Santa Barbara 28
Santa Cruz 34
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 36,249
Other - UC 351
Other-Network UC 282
_____
38,514
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 8,120
Davis 261
Irvine 1,453
Los Angeles 3,003
Riverside 0
San Diego 2,531
San Francisco 2,351
Santa Barbara 257
Santa Cruz 1,261
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 1,666,746
Other - UC 1,329
Other-Network UC 3,188
_____
1,690,500
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.1
Standard deviation in seconds 8.2
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) 27:55
Average session length (minutes:seconds) 32:12
Longest session recorded (minutes:seconds) 265:44
Average number of searches completed per session 0.0
Retrievals per search - median 10.0
Retrievals per search - average 1202.7
Retrievals per search - standard deviation 10169
Percent of searches completed with 0 results 24.9%
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 38,514 9.7%
PRESENT 349,763 87.9%
INIT or CLOSE 8,536 2.1%
OTHER 969 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 11,175 17.7% 3,033 27.1% 9 80.8 512.8
TITLE WORD 3,414 5.4% 1,280 37.5% 3 139.5 581.4
EXACT TITLE 596 0.9% 333 55.9% 1 28.3 328.7
JOURNAL 2,418 3.8% 1,007 41.6% 7 1222.6 10066.2
EXACT JOURNAL 849 1.3% 342 40.3% 590 24013.5 57836.9
SUBJECT 3,051 4.8% 1,274 41.8% 65 2273.7 8211.6
EXACT SUBJECT 1,901 3.0% 620 32.6% 53 781.6 3442.0
KEYWORD 22,039 35.0% 4,300 19.5% 54 1540.8 9868.2
AUTHOR AFFIL 137 0.2% 112 81.8% 8 346.8 1593.7
FORM/PUB TYPE 2,628 4.2% 681 25.9% 44 642.8 3461.4
DATE 2,870 4.6% 690 24.0% 24 513.6 2557.2
ADDED 39 0.1% 27 69.2% 2 12.3 23.2
CONFERENCE 9 0.0% 5 55.6% 1 1.0 0.0
LANGUAGE 5,203 8.3% 1,416 27.2% 74 1608.3 8596.5
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 10 0.0% 10 100% 0 0.0 0.0
XXS 13 0.0% 5 38.5% 6,052 10725.5 15356.7
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 473 0.8% 152 32.1% 55 533.0 2321.0
AT 6,217 9.9% 1,544 24.8% 64 1326.0 7870.9
Other indexes 6 0.0% 2 33.3% 36,168 36167.5 16694.1
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 13,501 35.1% 3,888 28.8% 29 1012.7 6477.8
Single 25,013 64.9% 5,702 22.8% 37 1894.5 13569.5
PRESENT commands, by type:
MARC 40.4%
OPAC 33.0%