MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 09/08/01 through 09/14/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 767 2,270 3,037
Davis 1,534 233 1,767
Irvine 529 0 529
Los Angeles 15 396 411
Riverside 422 49 471
San Diego 308 174 482
San Francisco 255 0 255
Santa Barbara 153 113 266
Santa Cruz 150 127 277
LBL 0 101 101
LLL 0 56 56
Other - UC 23 261 284
CSL 0 136 136
CSU n/a 115 115
Other-Non-UC n/a 3,891 3,891
_______ ______ _____
4,156 7,922 12,078
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 260 1,057 5,610
2-4 a.m. 190 931 5,496
4-6 a.m. 191 923 6,266
6-8 a.m. 382 1,054 7,397
8-10 a.m. 1,520 4,860 33,144
10-12 a.m. 2,237 7,152 57,761
12-2 p.m. 2,130 7,333 57,504
2-4 p.m. 2,506 8,700 57,123
4-6 p.m. 1,505 5,182 38,022
6-8 p.m. 502 1,369 12,970
8-10 p.m. 335 785 9,325
10-12 p.m. 320 1,005 6,872
__________ __________ __________ _________________
Total: 12,078 40,351 297,490
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,053 7,395 9,448
Davis 5,635 909 6,544
Irvine 2,196 0 2,196
Los Angeles 17 814 831
Riverside 1,445 159 1,604
San Diego 1,425 322 1,747
San Francisco 564 0 564
Santa Barbara 447 245 692
Santa Cruz 725 265 990
LBL 0 119 119
LLL 0 197 197
Other - UC 27 891 918
CSL 0 151 151
CSU n/a 516 516
Other-Non-UC n/a 13,834 13,834
_______ ______ _____
14,534 25,817 40,351
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17,461 59,399 76,860
Davis 29,562 5,101 34,663
Irvine 15,808 0 15,808
Los Angeles 238 12,987 13,225
Riverside 10,620 2,000 12,620
San Diego 6,337 2,083 8,420
San Francisco 2,667 0 2,667
Santa Barbara 4,542 2,137 6,679
Santa Cruz 3,976 1,700 5,676
LBL 0 1,280 1,280
LLL 0 1,674 1,674
Other - UC 260 5,798 6,058
CSL 0 2,020 2,020
CSU n/a 4,912 4,912
Other-Non-UC n/a 104,928 104,928
_______ ______ _____
91,471 206,019 297,490
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 2.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 2.7
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:00
Average session length (minutes:seconds) 15:03
Longest session recorded (minutes:seconds) 611:56
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 65.4
Retrievals per search - standard deviation 1219.2
Percent of searches completed with 0 results 27.0%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 61.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 38,658 36.0%
DISPLAY (excluding automatic displays) 33,899 31.5%
ACFIND 11 0.0%
BROWSE 399 0.4%
SELECT 206 0.2%
HELP 796 0.7%
EXPLAIN 796 0.7%
SET/RESET 3,193 3.0%
SHOW 251 0.2%
AT 2,361 2.2%
ADD ON (AND, OR, AND NOT) 1,669 1.6%
LOGON or LOGOFF 19,385 18.0%
COMMENT 1 0.0%
SAVE 692 0.6%
USE 649 0.6%
OTHER 4,525 4.2%
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 5,840 14.5% 1,395 23.9% 11 82.4 306.4
AUTHOR 1,603 4.0% 384 24.0% 11 143.7 637.2
CORPORATE AUTH 381 0.9% 155 40.7% 20 854.7 6638.2
EXACT CA 9 0.0% 6 66.7% 15 36.7 39.3
TITLE WORD 8,942 22.2% 2,801 31.3% 4 42.0 302.5
EXACT TITLE 6,924 17.2% 2,111 30.5% 2 26.3 163.8
TITLE -> TW 1,274 3.2% 325 25.5% 7 42.1 95.5
TITLE -> XT 1,510 3.7% 721 47.7% 1 40.4 800.4
SUBJECT 2,121 5.3% 680 32.1% 41 513.8 5330.1
EXACT SUBJECT 118 0.3% 19 16.1% 43 284.2 631.1
PERIODICAL 6,124 15.2% 1,138 18.6% 5 77.1 756.1
EXACT PE 2,519 6.2% 361 14.3% 3 47.0 565.7
RPE 3 0.0% 0 0.0% 4 4.3 2.5
XRP 2 0.0% 0 0.0% 3 3.0 1.4
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 38 0.1% 3 7.9% 79 286.3 379.7
DATE 617 1.5% 149 24.1% 4 205.7 1954.0
FORM 497 1.2% 126 25.4% 15 159.2 547.6
NUMBER* 23 0.1% 9 39.1% 94 434.3 900.8
MUSIC* 52 0.1% 24 46.2% 6 315.9 500.8
SERIES 944 2.3% 274 29.0% 2 58.3 273.4
UNIFORM TITLE 5 0.0% 1 20.0% 10 10.3 8.2
Other indexes 769 1.9% 322 41.9% 1 13.7 128.1
* 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 2,167 5.7% 568 26.2% 5 86.7 533.6
Single 35,907 94.3% 9,849 27.4% 4 91.6 1492.4
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 11 3.2% 2 18.2% 11 46.1 64.9
CORPORATE AUTH 1 0.3% 0 0.0% 14 14.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 320 91.7% 73 22.8% 23 118.7 315.3
EXACT SUBJECT 16 4.6% 4 25.0% 13 128.3 255.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.3% 1 100% 0 0.0 0.0
By number of indexes:
Multiple 2 0.5% 2 100% 0 0.0 0.0
Single 369 99.5% 84 22.8% 20 110.8 299.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.6%
BRIEF 67.6%
LONG 10.5%
MARC 4.1%
FIELDS 2.8%
TAG 2.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.7%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 31.9%
2. First word of command is invalid 25.5%
3. FIND command with invalid index name 12.4%
4. DISPLAY command contains invalid word 3.7%
5. Search term missing from search command 2.8%
6. Max. # of ports to a Z39 db are in use 2.3%
7. PS command - no previous screen 2.1%
8. DISPLAY command - no FIND results 2.0%
9. Valid command at an inappropriate time 1.6%
10. KW search in database w/o KW index 1.3%
11. All others 14.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.6%
2. FIND 12.4%
3. Unrecognized term 6.3%
4. COMMAND WORDS 6.2%
5. INDEXES 5.8%
6. PASSWORDS 4.3%
7. DATABASES 2.5%
8. LOCATE (PE DB) 2.3%
9. DISPLAY 2.1%
10. CATALOG 1.9%
11. All others 31.7%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.9%
2. First word of command is invalid 15.7%
3. FIND command with invalid index name 13.7%
4. DISPLAY command - middle of >1 screen 4.1%
5. DISPLAY command-first of >1 screen 2.8%
6. FIND command retrieves >1 book 2.5%
7. DISPLAY command-complete in one screen 1.9%
8. F/BR with index invalid in current DB 1.8%
9. DISPLAY command - last of >1 screen 1.8%
10. TW search with zero results 1.6%
11. All others 30.2%
Ten most frequent SHOW requests:
1. HISTORY 44.8%
2. SEARCH 16.9%
3. GLOSSARY 10.1%
4. SETTINGS 4.0%
5. DATABASE NEWS 2.0%
6. MAIL STATUS 2.0%
7. STATISTICS 1.6%
8. UPDATE 1.6%
9. NEWS 1.2%
10. 2292 1.2%
11. All others 14.5%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)