MELSRV COMPUTER ARTICLES DATABASES Z39.50 SERVER STATISTICS
Time period: 10/01/99 through 10/31/99
1.0 SUMMARY STATISTICS
_______________________
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 168 1,521
2-4 a.m. 49 2,590
4-6 a.m. 28 474
6-8 a.m. 42 706
8-10 a.m. 476 7,612
10-12 a.m. 1,082 14,506
12-2 p.m. 1,245 22,443
2-4 p.m. 1,593 33,410
4-6 p.m. 1,201 20,377
6-8 p.m. 634 9,829
8-10 p.m. 616 11,368
10-12 p.m. 355 5,700
__________ _____________ _________________
Total: 7,489 130,536
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 24
Davis 4
Irvine 3
Los Angeles 6
Riverside 0
San Diego 1,176
San Francisco 8
Santa Barbara 49
Santa Cruz 291
Lawrence Berkeley 0
Lawrence Livermore 9
Los Alamos 0
MELWEB 1,548
Other - UC 4,318
Other-Network UC 53
_____
7,489
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 525
Davis 51
Irvine 13
Los Angeles 30
Riverside 0
San Diego 0
San Francisco 2
Santa Barbara 12
Santa Cruz 279
Lawrence Berkeley 0
Lawrence Livermore 27
Los Alamos 0
MELWEB 39,436
Other - UC 89,698
Other-Network UC 463
_____
130,536
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 0.8
Standard deviation in seconds 3.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.4
Standard deviation in seconds 1.0
2.0 COMPUTER ARTICLES Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 2:36
Average session length (minutes:seconds) 14:01
Longest session recorded (minutes:seconds) 201:09
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 1308.0
Retrievals per search - standard deviation 12203
Percent of searches completed with 0 results 40.7%
Percent of searches entered that are long 0.1%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 7,489 20.5%
PRESENT 25,591 70.1%
INIT or CLOSE 3,309 9.1%
OTHER 108 0.3%
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 585 6.2% 430 73.5% 4 90.3 262.4
TITLE WORD 972 10.2% 494 50.8% 13 638.7 3766.1
EXACT TITLE 104 1.1% 88 84.6% 4 11.9 21.2
JOURNAL TITLE 199 2.1% 152 76.4% 215 6254.2 19964.2
EXACT JOURNAL 206 2.2% 49 23.8% 3,106 12651.5 17564.9
SUBJECT WORD 851 9.0% 512 60.2% 22 1260.3 5041.2
EXACT SUBJECT 338 3.6% 118 34.9% 25 1170.4 4565.9
KEYWORD 4,599 48.4% 1,431 31.1% 22 2054.2 17765.9
DATE 287 3.0% 89 31.0% 20 473.7 3772.1
ADDED SINCE 58 0.6% 37 63.8% 13 328.3 865.5
PUB TYPE 97 1.0% 56 57.7% 32 83.5 151.7
SUBFILE 35 0.4% 18 51.4% 80 317.2 461.4
ID 20 0.2% 1 5.0% 1 1.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
SIC 0 0.0% 0 0.0% 0 0.0 0.0
ILLUS 1 0.0% 1 100% 0 0.0 0.0
ARTICLE 222 2.3% 57 25.7% 90 2378.6 9912.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 895 9.4% 277 30.9% 24 1857.6 8112.5
Other indexes 38 0.4% 17 44.7% 199 1489.1 5148.1
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 1,529 20.4% 560 36.6% 27 1657.2 7855.0
Single 5,960 79.6% 2,485 41.7% 21 2356.9 17352.8
PRESENT commands, by type:
MARC 49.1%
OPAC 29.2%