MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 05/01/02 through 05/31/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 43,700 1,506,510
INS90 14,488 107,673
INS85 12,576 60,857
INS80 11,752 39,216
INS69 12,169 55,150
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,866 52,167
2-4 a.m. 1,188 25,971
4-6 a.m. 547 17,475
6-8 a.m. 985 27,143
8-10 a.m. 4,835 96,062
10-12 a.m. 13,680 241,967
12-2 p.m. 14,780 297,994
2-4 p.m. 18,668 357,140
4-6 p.m. 16,804 311,813
6-8 p.m. 9,180 153,882
8-10 p.m. 6,655 108,350
10-12 p.m. 4,497 79,442
__________ _____________ _________________
Total: 94,685 1,769,406
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 410
Davis 632
Irvine 102
Los Angeles 288
Riverside 41
San Diego 188
San Francisco 55
Santa Barbara 329
Santa Cruz 55
Lawrence Berkeley 178
Lawrence Livermore 63
Los Alamos 0
MELWEB 76,252
Searchlight 15,871
Other - UC 35
Other-Network UC 186
_____
94,685
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,685
Davis 6,030
Irvine 1,240
Los Angeles 4,165
Riverside 380
San Diego 2,478
San Francisco 1,008
Santa Barbara 4,517
Santa Cruz 260
Lawrence Berkeley 3,504
Lawrence Livermore 2,328
Los Alamos 0
MELWEB 1,727,079
Searchlight 10,803
Other - UC 383
Other-Network UC 1,546
_____
1,769,406
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.3
Standard deviation in seconds 8.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:03
Average session length (minutes:seconds) 17:46
Longest session recorded (minutes:seconds) 214:34
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 351.9
Retrievals per search - standard deviation 4907.3
Percent of searches completed with 0 results 35.1%
Percent of searches entered that are long 0.8%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 94,685 20.2%
PRESENT 323,127 68.8%
INIT or CLOSE 50,987 10.9%
OTHER 590 0.1%
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 29,399 25.7% 8,907 30.3% 9 70.8 593.4
TITLE WORD 21,252 18.6% 9,208 43.3% 3 101.1 3633.3
EXACT TITLE 1,282 1.1% 625 48.8% 1 7.8 60.3
JOURNAL 4,131 3.6% 1,972 47.7% 7 1523.4 9118.4
EXACT JOURNAL 849 0.7% 315 37.1% 438 4403.9 12524.7
SUBJECT 3,999 3.5% 1,940 48.5% 9 304.2 1858.3
EXACT SUBJECT 747 0.7% 221 29.6% 7 358.3 1466.9
THESAURUS 7 0.0% 3 42.9% 72 75.5 63.6
EXACT THESAURUS 215 0.2% 75 34.9% 12 928.4 4252.9
KEYWORD 43,692 38.2% 15,082 34.5% 15 834.1 7761.6
SUBFILE 77 0.1% 24 31.2% 19 165.8 382.8
FORM 869 0.8% 220 25.3% 16 190.6 1100.4
DATE 925 0.8% 221 23.9% 9 150.0 1046.6
ADDED 450 0.4% 247 54.9% 4 105.5 1039.8
ARTICLE 33 0.0% 4 12.1% 23 174.0 345.7
AUTHOR AFFIL. 1,024 0.9% 414 40.4% 8 136.4 2102.7
CONFERENCE 150 0.1% 60 40.0% 4 4201.7 32223.8
LANGUAGE 2,385 2.1% 737 30.9% 24 675.2 5038.9
CHEMICAL NAME 361 0.3% 196 54.3% 6 116.2 958.1
ISSN 14 0.0% 11 78.6% 373 301.3 169.3
ISBN 8 0.0% 3 37.5% 100 81.4 31.8
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 9 0.0% 9 100% 0 0.0 0.0
STANDARD NUMBER 14 0.0% 14 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,395 2.1% 774 32.3% 17 1322.8 10904.8
Other indexes 19 0.0% 17 89.5% 2 2.0 1.4
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 17,248 18.2% 7,109 41.2% 6 325.7 4716.5
Single 77,437 81.8% 26,168 33.8% 12 585.5 6319.9
PRESENT commands, by type:
MARC 38.8%
OPAC 33.7%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)