MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 11/10/01 through 11/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 735 2,200 2,935
Davis 1,565 206 1,771
Irvine 552 0 552
Los Angeles 3 476 479
Riverside 383 83 466
San Diego 252 173 425
San Francisco 204 0 204
Santa Barbara 241 110 351
Santa Cruz 207 122 329
LBL 0 61 61
LLL 0 98 98
Other - UC 28 275 303
CSL 0 96 96
CSU n/a 161 161
Other-Non-UC n/a 3,761 3,761
_______ ______ _____
4,170 7,822 11,992
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 219 676 4,001
2-4 a.m. 214 587 5,046
4-6 a.m. 193 606 4,679
6-8 a.m. 396 1,377 8,888
8-10 a.m. 1,390 4,697 31,576
10-12 a.m. 2,155 8,523 58,235
12-2 p.m. 2,286 8,154 55,683
2-4 p.m. 2,370 8,475 61,695
4-6 p.m. 1,508 4,951 33,719
6-8 p.m. 524 1,820 15,017
8-10 p.m. 403 1,015 12,831
10-12 p.m. 334 933 9,025
__________ __________ __________ _________________
Total: 11,992 41,814 300,395
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,962 6,332 8,294
Davis 6,054 799 6,853
Irvine 2,574 0 2,574
Los Angeles 4 1,068 1,072
Riverside 1,252 184 1,436
San Diego 910 396 1,306
San Francisco 308 0 308
Santa Barbara 1,305 296 1,601
Santa Cruz 2,147 284 2,431
LBL 0 73 73
LLL 0 350 350
Other - UC 17 1,002 1,019
CSL 0 95 95
CSU n/a 553 553
Other-Non-UC n/a 13,849 13,849
_______ ______ _____
16,533 25,281 41,814
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,978 50,078 66,056
Davis 36,828 4,525 41,353
Irvine 14,684 0 14,684
Los Angeles 20 8,305 8,325
Riverside 9,734 1,903 11,637
San Diego 4,244 4,952 9,196
San Francisco 2,162 0 2,162
Santa Barbara 10,499 2,554 13,053
Santa Cruz 6,694 2,129 8,823
LBL 0 666 666
LLL 0 2,428 2,428
Other - UC 51 9,703 9,754
CSL 0 813 813
CSU n/a 6,200 6,200
Other-Non-UC n/a 105,245 105,245
_______ ______ _____
100,894 199,501 300,395
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 3.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.6
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:40
Average session length (minutes:seconds) 13:53
Longest session recorded (minutes:seconds) 441:07
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 56.2
Retrievals per search - standard deviation 543.7
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 64.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 40,282 36.2%
DISPLAY (excluding automatic displays) 36,306 32.6%
ACFIND 9 0.0%
BROWSE 331 0.3%
SELECT 200 0.2%
HELP 888 0.8%
EXPLAIN 889 0.8%
SET/RESET 2,754 2.5%
SHOW 215 0.2%
AT 2,199 2.0%
ADD ON (AND, OR, AND NOT) 1,511 1.4%
LOGON or LOGOFF 19,882 17.9%
COMMENT 1 0.0%
SAVE 549 0.5%
USE 776 0.7%
OTHER 4,431 4.0%
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 5,995 14.2% 1,391 23.2% 10 89.2 544.8
AUTHOR 1,319 3.1% 344 26.1% 9 100.0 511.7
CORPORATE AUTH 458 1.1% 191 41.7% 13 386.3 1485.6
EXACT CA 16 0.0% 6 37.5% 29 538.7 908.9
TITLE WORD 9,423 22.4% 3,044 32.3% 4 43.7 307.7
EXACT TITLE 7,365 17.5% 1,866 25.3% 2 19.2 121.2
TITLE -> TW 1,026 2.4% 274 26.7% 10 92.4 944.0
TITLE -> XT 1,276 3.0% 561 44.0% 1 7.1 26.9
SUBJECT 2,308 5.5% 873 37.8% 50 408.6 1718.9
EXACT SUBJECT 136 0.3% 36 26.5% 145 403.8 741.9
PERIODICAL 7,281 17.3% 1,502 20.6% 4 75.2 832.0
EXACT PE 2,870 6.8% 448 15.6% 3 35.8 421.2
RPE 2 0.0% 1 50.0% 5 5.0 0.0
XRP 2 0.0% 0 0.0% 4 4.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 38 0.1% 5 13.2% 69 160.3 228.9
DATE 663 1.6% 142 21.4% 3 29.8 81.2
FORM 371 0.9% 86 23.2% 18 148.0 568.7
NUMBER* 15 0.0% 4 26.7% 2 41.7 90.9
MUSIC* 1 0.0% 1 100% 0 0.0 0.0
SERIES 823 2.0% 240 29.2% 5 95.4 576.1
UNIFORM TITLE 2 0.0% 0 0.0% 87 86.5 118.1
Other indexes 764 1.8% 343 44.9% 1 23.0 123.1
* 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 2,323 5.9% 627 27.0% 3 59.3 671.1
Single 37,378 94.1% 10,086 27.0% 4 78.5 643.3
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 10 3.2% 2 20.0% 4 38.0 71.0
CORPORATE AUTH 2 0.6% 2 100% 0 0.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 278 90.0% 48 17.3% 42 164.6 247.5
EXACT SUBJECT 18 5.8% 0 0.0% 18 36.6 57.8
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 0 0.0% 0 0.0% 0 0.0 0.0
Single 313 100% 53 16.9% 29 149.6 237.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.5%
BRIEF 67.6%
LONG 9.5%
MARC 4.2%
FIELDS 2.9%
TAG 2.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.6%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.5%
Ten most frequent errors:
1. NS command - no next screen 26.9%
2. First word of command is invalid 23.2%
3. Max. # of ports to a Z39 db are in use 13.8%
4. FIND command with invalid index name 11.5%
5. DISPLAY command contains invalid word 3.2%
6. Search term missing from search command 2.5%
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 1.3%
10. DISPLAY command - no FIND results 1.2%
11. All others 12.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.6%
2. FIND 13.0%
3. COMMAND WORDS 7.1%
4. Unrecognized term 4.9%
5. INDEXES 4.5%
6. PASSWORDS 3.3%
7. DISPLAY 2.4%
8. AT 1.6%
9. CATALOG 1.6%
10. NRLF 1.5%
11. All others 31.6%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.5%
2. First word of command is invalid 15.6%
3. FIND command with invalid index name 12.6%
4. DISPLAY command - middle of >1 screen 4.3%
5. DISPLAY command-first of >1 screen 4.1%
6. NS command - no next screen 3.2%
7. FIND command retrieves >1 book 2.9%
8. DISPLAY command - last of >1 screen 2.2%
9. TW search with zero results 1.8%
10. DISPLAY command-complete in one screen 1.7%
11. All others 28.2%
Ten most frequent SHOW requests:
1. HISTORY 38.3%
2. GLOSSARY 11.2%
3. SEARCH 10.7%
4. TIME 8.7%
5. SETTINGS 6.3%
6. MEDLINE NEWS 5.3%
7. DATABASE NEWS 2.9%
8. NEWS 2.4%
9. SYSTEMS INFORMATION 1.9%
10. TIMEOUT SETTING 1.5%
11. All others 10.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)