MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 07/01/00 through 07/31/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 265,673 1,597,339
INS90 10,264 114,794
INS85 7,999 56,035
INS80 7,069 39,979
INS69 7,498 60,103
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 17,868 45,123
2-4 a.m. 15,119 32,203
4-6 a.m. 349 9,347
6-8 a.m. 718 24,368
8-10 a.m. 26,372 130,707
10-12 a.m. 42,565 320,256
12-2 p.m. 67,243 309,399
2-4 p.m. 32,718 376,868
4-6 p.m. 42,176 350,462
6-8 p.m. 17,604 134,367
8-10 p.m. 17,174 74,852
10-12 p.m. 18,597 60,298
__________ _____________ _________________
Total: 298,503 1,868,250
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 230,885
Davis 196
Irvine 59
Los Angeles 157
Riverside 2
San Diego 629
San Francisco 63
Santa Barbara 294
Santa Cruz 70
Lawrence Berkeley 103
Lawrence Livermore 88
Los Alamos 0
MELWEB 63,415
Searchlight 1,880
Other - UC 60
Other-Network UC 602
_____
298,503
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 235,983
Davis 3,100
Irvine 298
Los Angeles 2,210
Riverside 43
San Diego 1,465
San Francisco 1,076
Santa Barbara 3,779
Santa Cruz 3,242
Lawrence Berkeley 1,080
Lawrence Livermore 14,330
Los Alamos 0
MELWEB 1,578,661
Searchlight 17,074
Other - UC 499
Other-Network UC 5,410
_____
1,868,250
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.8
Standard deviation in seconds 15.8
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.6
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:14
Average session length (minutes:seconds) 23:31
Longest session recorded (minutes:seconds) 351:43
Average number of searches completed per session 0.0
Retrievals per search - median 1.0
Retrievals per search - average 87.2
Retrievals per search - standard deviation 3329.3
Percent of searches completed with 0 results 8.1%
Percent of searches entered that are long 0.2%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 298,503 46.7%
PRESENT 308,047 48.2%
INIT or CLOSE 31,861 5.0%
OTHER 827 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 27,701 8.7% 8,054 29.1% 9 63.2 554.0
TITLE WORD 14,498 4.6% 5,479 37.8% 4 102.4 1865.1
EXACT TITLE 1,128 0.4% 485 43.0% 1 5.4 27.1
JOURNAL 4,120 1.3% 1,859 45.1% 7 1598.6 8185.3
EXACT JOURNAL 1,066 0.3% 479 44.9% 381 3496.4 8516.1
SUBJECT 3,748 1.2% 1,721 45.9% 9 263.1 1575.1
EXACT SUBJECT 764 0.2% 211 27.6% 8 297.9 1216.6
THESAURUS 22 0.0% 19 86.4% 38 455.7 755.7
EXACT THESAURUS 171 0.1% 27 15.8% 23 957.6 2808.5
KEYWORD 24,022 7.6% 5,968 24.8% 18 963.2 13007.9
SUBFILE 140 0.0% 32 22.9% 21 252.3 1081.7
FORM 931 0.3% 317 34.0% 16 133.7 514.4
DATE 841 0.3% 230 27.3% 13 133.7 604.2
ADDED 561 0.2% 390 69.5% 3 16.9 28.8
ARTICLE 67 0.0% 27 40.3% 9 164.5 670.5
AUTHOR AFFIL. 1,277 0.4% 656 51.4% 11 162.9 896.8
CONFERENCE 175 0.1% 89 50.9% 17 354.3 960.6
LANGUAGE 3,038 1.0% 818 26.9% 20 612.2 4928.0
CHEMICAL NAME 514 0.2% 279 54.3% 10 142.5 490.6
ISSN 2 0.0% 2 100% 0 0.0 0.0
ISBN 3 0.0% 0 0.0% 100 82.0 36.5
ID NUMBER 230186 72.4% 3,607 1.6% 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 3,151 1.0% 939 29.8% 14 418.5 2889.4
Other indexes 6 0.0% 4 66.7% 12 12.0 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 16,241 5.4% 6,308 38.8% 6 237.4 2863.5
Single 282,262 94.6% 17,741 6.3% 1 89.5 3492.6
PRESENT commands, by type:
MARC 65.1%
OPAC 19.6%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)