MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 10/01/01 through 10/31/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 45,738 1,660,464
INS90 15,670 113,142
INS85 13,507 54,941
INS80 12,604 37,785
INS69 12,986 58,623
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,248 41,364
2-4 a.m. 786 21,953
4-6 a.m. 460 20,009
6-8 a.m. 1,015 29,917
8-10 a.m. 5,412 117,460
10-12 a.m. 15,745 295,398
12-2 p.m. 16,541 298,971
2-4 p.m. 21,344 407,085
4-6 p.m. 17,722 328,887
6-8 p.m. 8,783 159,601
8-10 p.m. 5,593 108,140
10-12 p.m. 4,856 96,170
__________ _____________ _________________
Total: 100,505 1,924,955
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 180
Davis 146
Irvine 57
Los Angeles 514
Riverside 4
San Diego 212
San Francisco 35
Santa Barbara 355
Santa Cruz 134
Lawrence Berkeley 77
Lawrence Livermore 22
Los Alamos 0
MELWEB 0
Searchlight 17,187
Other - UC 81,425
Other-Network UC 157
_____
100,505
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,064
Davis 2,004
Irvine 1,284
Los Angeles 1,435
Riverside 53
San Diego 3,767
San Francisco 411
Santa Barbara 3,472
Santa Cruz 417
Lawrence Berkeley 825
Lawrence Livermore 4,325
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 1,901,810
Other-Network UC 3,088
_____
1,924,955
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.4
Standard deviation in seconds 7.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.8
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 20:59
Average session length (minutes:seconds) 17:27
Longest session recorded (minutes:seconds) 230:04
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 410.6
Retrievals per search - standard deviation 4992.1
Percent of searches completed with 0 results 34.9%
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 100,505 20.3%
PRESENT 338,720 68.4%
INIT or CLOSE 55,050 11.1%
OTHER 604 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 31,769 25.7% 10,177 32.0% 9 64.9 968.3
TITLE WORD 20,037 16.2% 8,423 42.0% 3 70.4 513.4
EXACT TITLE 1,112 0.9% 564 50.7% 1 11.6 80.7
JOURNAL 4,652 3.8% 2,228 47.9% 7 1233.0 10181.7
EXACT JOURNAL 1,226 1.0% 546 44.5% 350 3594.8 10506.0
SUBJECT 4,384 3.5% 2,012 45.9% 10 306.1 1470.3
EXACT SUBJECT 649 0.5% 155 23.9% 8 608.2 4725.7
THESAURUS 7 0.0% 5 71.4% 8,242 8241.5 7285.3
EXACT THESAURUS 197 0.2% 27 13.7% 42 1655.2 4940.8
KEYWORD 48,271 39.0% 16,440 34.1% 18 1023.1 8167.7
SUBFILE 136 0.1% 17 12.5% 13 242.0 951.2
FORM 1,149 0.9% 307 26.7% 18 142.1 760.9
DATE 804 0.7% 189 23.5% 15 121.1 446.2
ADDED 323 0.3% 196 60.7% 3 9.2 17.0
ARTICLE 48 0.0% 10 20.8% 123 537.3 1043.3
AUTHOR AFFIL. 1,059 0.9% 488 46.1% 12 56.7 351.3
CONFERENCE 204 0.2% 66 32.4% 15 271.1 820.4
LANGUAGE 3,347 2.7% 915 27.3% 31 760.2 5280.1
CHEMICAL NAME 715 0.6% 358 50.1% 7 56.2 283.4
ISSN 9 0.0% 3 33.3% 12 29.7 38.0
ISBN 28 0.0% 24 85.7% 75 79.5 17.1
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 3 0.0% 3 100% 0 0.0 0.0
STANDARD NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,460 2.8% 1,102 31.8% 18 739.9 4304.7
Other indexes 27 0.0% 22 81.5% 2 16.4 30.1
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 19,336 19.2% 7,828 40.5% 6 281.2 3221.1
Single 81,169 80.8% 27,268 33.6% 13 705.5 6637.3
PRESENT commands, by type:
MARC 36.6%
OPAC 36.7%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)