MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 10/01/01 through 10/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,126 10,316 13,442
Davis 8,795 964 9,759
Irvine 2,801 0 2,801
Los Angeles 43 2,151 2,194
Riverside 1,905 428 2,333
San Diego 1,570 646 2,216
San Francisco 977 0 977
Santa Barbara 1,137 556 1,693
Santa Cruz 965 696 1,661
LBL 0 372 372
LLL 0 312 312
Other - UC 165 976 1,141
CSL 0 618 618
CSU n/a 717 717
Other-Non UC n/a 16,691 16,691
_______ ______ _____
21,484 35,443 56,927
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,070 2,989 24,274
2-4 a.m. 770 1,807 15,537
4-6 a.m. 790 1,999 16,733
6-8 a.m. 1,800 4,960 38,357
8-10 a.m. 7,025 24,113 171,944
10-12 a.m. 10,778 38,968 260,603
12-2 p.m. 10,394 36,858 252,725
2-4 p.m. 11,285 39,572 264,690
4-6 p.m. 7,306 24,289 180,120
6-8 p.m. 2,491 7,893 59,261
8-10 p.m. 1,771 4,840 46,935
10-12 p.m. 1,447 5,223 37,007
__________ __________ __________ _________________
Total: 56,927 193,511 1,368,186
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,152 31,882 40,034
Davis 34,907 3,566 38,473
Irvine 10,701 0 10,701
Los Angeles 60 5,974 6,034
Riverside 7,048 986 8,034
San Diego 5,333 1,194 6,527
San Francisco 1,572 0 1,572
Santa Barbara 4,704 1,286 5,990
Santa Cruz 8,838 1,564 10,402
LBL 0 506 506
LLL 0 930 930
Other - UC 145 2,956 3,101
CSL 0 712 712
CSU n/a 2,989 2,989
Other-Non UC n/a 57,506 57,506
_______ ______ _____
81,460 112,051 193,511
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 73,024 228,794 301,818
Davis 201,235 17,062 218,297
Irvine 73,042 0 73,042
Los Angeles 334 42,461 42,795
Riverside 51,702 6,216 57,918
San Diego 27,454 10,657 38,111
San Francisco 10,345 0 10,345
Santa Barbara 47,545 14,769 62,314
Santa Cruz 24,553 14,479 39,032
LBL 0 4,012 4,012
LLL 0 8,440 8,440
Other - UC 484 21,028 21,512
CSL 0 5,648 5,648
CSU n/a 30,192 30,192
Other-Non UC n/a 454,710 454,710
_______ ______ _____
509,718 858,468 1,368,186
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.4
Standard deviation in seconds 3.0
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1290
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 87.7
Retrievals per search - standard deviation 1648.8
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 63.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 186,659 36.1%
DISPLAY (excluding automatic displays) 167,397 32.3%
ACFIND 49 0.0%
BROWSE 1,384 0.3%
SELECT 933 0.2%
HELP 3,613 0.7%
EXPLAIN 3,521 0.7%
SET/RESET 14,687 2.8%
SHOW 1,410 0.3%
AT 11,654 2.3%
ADD ON (AND, OR, AND NOT) 6,730 1.3%
LOGON or LOGOFF 91,775 17.7%
COMMENT 2 0.0%
SAVE 3,387 0.7%
USE 3,373 0.7%
OTHER 21,192 4.1%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 27,215 13.9% 6,497 23.9% 10 100.4 1385.5
AUTHOR 6,975 3.6% 1,727 24.8% 12 115.3 485.5
CORPORATE AUTH 1,971 1.0% 722 36.6% 15 755.5 5764.8
EXACT CA 137 0.1% 18 13.1% 3 172.3 998.5
TITLE WORD 44,857 22.9% 14,422 32.1% 4 50.3 1329.1
EXACT TITLE 32,809 16.7% 8,812 26.9% 2 19.3 130.2
TITLE -> TW 4,482 2.3% 1,061 23.7% 8 74.4 925.4
TITLE -> XT 5,832 3.0% 2,619 44.9% 1 10.2 157.6
SUBJECT 9,376 4.8% 3,269 34.9% 39 474.8 4622.4
EXACT SUBJECT 654 0.3% 153 23.4% 59 509.0 2877.3
PERIODICAL 32,702 16.7% 6,766 20.7% 4 91.3 1119.1
EXACT PE 12,743 6.5% 2,091 16.4% 3 33.9 830.3
RPE 13 0.0% 9 69.2% 2 41.3 79.8
XRP 6 0.0% 1 16.7% 3 3.6 3.7
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 506 0.3% 91 18.0% 30 420.7 2408.9
DATE 4,824 2.5% 921 19.1% 8 1009.6 5386.4
FORM 2,577 1.3% 556 21.6% 14 262.0 3798.6
NUMBER* 177 0.1% 46 26.0% 2 179.6 932.4
MUSIC* 51 0.0% 35 68.6% 3 33.1 96.1
SERIES 4,249 2.2% 1,297 30.5% 3 237.5 5767.0
UNIFORM TITLE 53 0.0% 14 26.4% 117 1023.4 1505.0
Other indexes 4,002 2.0% 1,692 42.3% 1 12.6 105.6
* Number indexes include REPORT NUMBER STOCK NUMBER,
GOVERNMENT DOCUMENTS, and GPO ITEM NUMBER;
Music indexes include MUSICAL KEY, MUSIC PUBLISHER, and THEMATIC
By number of indexes:
Multiple 11,183 6.1% 2,932 26.2% 4 99.7 2484.2
Single 172,783 93.9% 46,772 27.1% 4 122.8 1907.6
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 96 7.6% 30 31.3% 11 45.0 106.3
CORPORATE AUTH 3 0.2% 1 33.3% 103 103.0 137.2
EXACT CA 2 0.2% 0 0.0% 30 30.0 28.3
SUBJECT 1,107 87.2% 258 23.3% 45 182.3 1408.4
EXACT SUBJECT 55 4.3% 4 7.3% 21 108.6 173.5
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 6 0.5% 0 0.0% 14 18.0 19.1
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,306 100% 294 22.5% 37 162.9 1291.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.3%
BRIEF 66.3%
LONG 8.8%
MARC 3.9%
FIELDS 2.9%
TAG 3.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 4.0%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 30.7%
2. First word of command is invalid 25.1%
3. FIND command with invalid index name 11.4%
4. Max. # of ports to a Z39 db are in use 5.4%
5. DISPLAY command contains invalid word 3.8%
6. Search term missing from search command 2.6%
7. PS command - no previous screen 2.0%
8. KW search in database w/o KW index 1.6%
9. Valid command at an inappropriate time 1.5%
10. DISPLAY command - no FIND results 1.5%
11. All others 14.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.3%
2. FIND 14.2%
3. INDEXES 6.8%
4. COMMAND WORDS 6.2%
5. Unrecognized term 5.5%
6. PASSWORDS 4.6%
7. DATABASES 2.6%
8. DISPLAY 2.1%
9. NRLF 1.8%
10. LOCATE (PE DB) 1.6%
11. All others 28.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.5%
2. First word of command is invalid 14.4%
3. FIND command with invalid index name 13.0%
4. DISPLAY command - middle of >1 screen 3.8%
5. DISPLAY command-first of >1 screen 3.1%
6. FIND command retrieves >1 book 2.4%
7. NS command - no next screen 2.2%
8. DISPLAY command-complete in one screen 2.2%
9. DISPLAY command - last of >1 screen 2.0%
10. TW search with zero results 1.7%
11. All others 29.7%
Ten most frequent SHOW requests:
1. HISTORY 39.4%
2. SEARCH 8.4%
3. NEWS 7.6%
4. GLOSSARY 6.3%
5. STATISTICS 6.1%
6. BOOK STATISTICS 5.0%
7. SETTINGS 4.1%
8. SYSTEMS INFORMATION 3.3%
9. MEDLINE NEWS 2.0%
10. MAIL STATUS 2.0%
11. All others 15.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)