MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 09/01/01 through 09/30/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 33,387 1,220,810
INS90 11,242 88,971
INS85 9,576 42,632
INS80 8,905 30,159
INS69 9,297 50,964
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,534 29,080
2-4 a.m. 757 18,254
4-6 a.m. 432 15,669
6-8 a.m. 504 12,690
8-10 a.m. 4,846 102,468
10-12 a.m. 11,621 232,120
12-2 p.m. 11,619 224,148
2-4 p.m. 15,373 308,079
4-6 p.m. 13,640 270,715
6-8 p.m. 5,908 114,382
8-10 p.m. 3,703 58,928
10-12 p.m. 2,470 47,003
__________ _____________ _________________
Total: 72,407 1,433,536
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 247
Davis 327
Irvine 258
Los Angeles 740
Riverside 18
San Diego 193
San Francisco 58
Santa Barbara 145
Santa Cruz 29
Lawrence Berkeley 294
Lawrence Livermore 23
Los Alamos 0
MELWEB 0
Searchlight 6,145
Other - UC 63,612
Other-Network UC 318
_____
72,407
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,039
Davis 1,843
Irvine 2,620
Los Angeles 2,143
Riverside 141
San Diego 2,131
San Francisco 134
Santa Barbara 4,859
Santa Cruz 73
Lawrence Berkeley 3,040
Lawrence Livermore 1,351
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 1,407,019
Other-Network UC 5,143
_____
1,433,536
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.6
Standard deviation in seconds 11.6
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:41
Average session length (minutes:seconds) 20:50
Longest session recorded (minutes:seconds) 208:44
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 409.3
Retrievals per search - standard deviation 4678.0
Percent of searches completed with 0 results 34.7%
Percent of searches entered that are long 0.9%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 72,407 19.7%
PRESENT 259,477 70.6%
INIT or CLOSE 35,197 9.6%
OTHER 471 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 26,623 29.3% 9,392 35.3% 9 81.7 2461.6
TITLE WORD 16,741 18.4% 7,266 43.4% 3 100.9 1894.8
EXACT TITLE 934 1.0% 508 54.4% 1 9.7 59.0
JOURNAL 3,988 4.4% 2,173 54.5% 8 1925.2 9033.1
EXACT JOURNAL 941 1.0% 394 41.9% 412 5149.5 13103.3
SUBJECT 3,038 3.3% 1,545 50.9% 9 237.2 1754.1
EXACT SUBJECT 530 0.6% 161 30.4% 17 437.4 1762.7
THESAURUS 2 0.0% 2 100% 0 0.0 0.0
EXACT THESAURUS 81 0.1% 8 9.9% 30 799.7 1425.2
KEYWORD 29,809 32.8% 9,093 30.5% 17 1006.0 7837.9
SUBFILE 83 0.1% 20 24.1% 28 169.5 446.0
FORM 820 0.9% 248 30.2% 18 153.4 480.1
DATE 1,020 1.1% 489 47.9% 12 256.1 1600.2
ADDED 348 0.4% 244 70.1% 4 12.1 17.3
ARTICLE 74 0.1% 23 31.1% 38 140.3 195.8
AUTHOR AFFIL. 669 0.7% 298 44.5% 11 117.9 822.4
CONFERENCE 178 0.2% 88 49.4% 4 142.7 427.6
LANGUAGE 2,281 2.5% 579 25.4% 20 444.2 3825.6
CHEMICAL NAME 362 0.4% 218 60.2% 8 223.5 987.0
ISSN 35 0.0% 6 17.1% 41 920.1 3336.1
ISBN 27 0.0% 22 81.5% 25 33.6 28.6
ID NUMBER 1 0.0% 0 0.0% 1 1.0 0.0
PRODUCT NUMBER 1 0.0% 1 100% 0 0.0 0.0
STANDARD NUMBER 1 0.0% 1 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,415 2.7% 744 30.8% 15 570.9 3325.0
Other indexes 12 0.0% 11 91.7% 28 28.0 0.0
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 15,816 21.8% 7,192 45.5% 6 263.2 4162.2
Single 56,591 78.2% 17,954 31.7% 13 708.3 6077.9
PRESENT commands, by type:
MARC 38.6%
OPAC 34.5%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)