MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 12/15/01 through 12/21/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 516 1,776 2,292
Davis 1,238 209 1,447
Irvine 286 0 286
Los Angeles 3 349 352
Riverside 299 54 353
San Diego 281 129 410
San Francisco 144 0 144
Santa Barbara 156 91 247
Santa Cruz 129 146 275
LBL 0 65 65
LLL 0 36 36
Other - UC 30 139 169
CSL 0 114 114
CSU n/a 65 65
Other-Non-UC n/a 2,828 2,828
_______ ______ _____
3,082 6,001 9,083
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 140 350 5,089
2-4 a.m. 166 499 5,185
4-6 a.m. 133 368 4,220
6-8 a.m. 310 741 4,772
8-10 a.m. 1,254 4,961 33,931
10-12 a.m. 1,897 6,801 49,786
12-2 p.m. 1,611 6,549 44,911
2-4 p.m. 1,813 7,218 53,887
4-6 p.m. 1,018 3,921 29,736
6-8 p.m. 328 1,401 10,766
8-10 p.m. 221 791 7,743
10-12 p.m. 192 467 6,603
__________ __________ __________ _________________
Total: 9,083 34,067 256,629
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,241 7,217 8,458
Davis 4,621 1,017 5,638
Irvine 2,374 0 2,374
Los Angeles 16 806 822
Riverside 1,198 108 1,306
San Diego 869 265 1,134
San Francisco 328 0 328
Santa Barbara 499 195 694
Santa Cruz 948 374 1,322
LBL 0 79 79
LLL 0 103 103
Other - UC 20 503 523
CSL 0 126 126
CSU n/a 201 201
Other-Non-UC n/a 10,959 10,959
_______ ______ _____
12,114 21,953 34,067
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,697 52,539 63,236
Davis 28,756 4,205 32,961
Irvine 15,555 0 15,555
Los Angeles 165 5,828 5,993
Riverside 10,253 821 11,074
San Diego 4,713 2,514 7,227
San Francisco 2,491 0 2,491
Santa Barbara 3,633 2,454 6,087
Santa Cruz 5,106 3,061 8,167
LBL 0 577 577
LLL 0 968 968
Other - UC 619 3,769 4,388
CSL 0 2,029 2,029
CSU n/a 2,398 2,398
Other-Non-UC n/a 93,478 93,478
_______ ______ _____
81,988 174,641 256,629
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 3.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:13
Average session length (minutes:seconds) 16:14
Longest session recorded (minutes:seconds) 1202
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 55.6
Retrievals per search - standard deviation 659.5
Percent of searches completed with 0 results 26.3%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 65.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 32,704 36.5%
DISPLAY (excluding automatic displays) 29,974 33.4%
ACFIND 3 0.0%
BROWSE 170 0.2%
SELECT 104 0.1%
HELP 404 0.5%
EXPLAIN 497 0.6%
SET/RESET 1,876 2.1%
SHOW 167 0.2%
AT 2,357 2.6%
ADD ON (AND, OR, AND NOT) 1,353 1.5%
LOGON or LOGOFF 15,663 17.5%
COMMENT 0 0.0%
SAVE 282 0.3%
USE 649 0.7%
OTHER 3,457 3.9%
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 5,569 16.2% 1,248 22.4% 10 68.3 475.8
AUTHOR 1,013 2.9% 226 22.3% 17 233.0 2060.3
CORPORATE AUTH 473 1.4% 172 36.4% 19 859.2 3635.6
EXACT CA 16 0.0% 3 18.8% 15 117.0 339.2
TITLE WORD 7,987 23.2% 2,548 31.9% 5 38.3 180.2
EXACT TITLE 5,011 14.6% 1,274 25.4% 2 19.5 122.3
TITLE -> TW 1,012 2.9% 242 23.9% 7 37.7 76.2
TITLE -> XT 1,190 3.5% 526 44.2% 2 12.2 118.3
SUBJECT 1,280 3.7% 426 33.3% 34 299.7 790.0
EXACT SUBJECT 64 0.2% 16 25.0% 42 1438.4 6304.6
PERIODICAL 6,251 18.2% 1,232 19.7% 5 55.6 383.9
EXACT PE 2,009 5.8% 273 13.6% 3 18.1 91.2
RPE 2 0.0% 0 0.0% 5 4.5 2.1
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 35 0.1% 7 20.0% 31 2037.5 5646.6
DATE 598 1.7% 150 25.1% 3 41.6 199.1
FORM 450 1.3% 99 22.0% 8 54.7 154.3
NUMBER* 21 0.1% 10 47.6% 1 52.5 137.3
MUSIC* 12 0.0% 7 58.3% 11 11.8 4.1
SERIES 763 2.2% 243 31.8% 3 43.6 140.4
UNIFORM TITLE 10 0.0% 4 40.0% 1 14.0 20.1
Other indexes 657 1.9% 350 53.3% 1 35.0 450.5
* 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 2,031 6.3% 500 24.6% 4 30.9 134.3
Single 30,288 93.7% 8,037 26.5% 5 77.5 766.0
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 6 4.1% 0 0.0% 35 67.5 67.8
CORPORATE AUTH 4 2.7% 1 25.0% 87 101.7 91.9
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 118 80.8% 25 21.2% 54 130.4 207.1
EXACT SUBJECT 18 12.3% 1 5.6% 19 130.7 204.9
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 164 100% 28 17.1% 38 131.0 283.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 12.4%
BRIEF 67.7%
LONG 8.4%
MARC 4.7%
FIELDS 2.6%
TAG 2.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.1%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.6%
Ten most frequent errors:
1. NS command - no next screen 34.2%
2. First word of command is invalid 25.7%
3. FIND command with invalid index name 11.1%
4. DISPLAY command contains invalid word 4.5%
5. DISPLAY command - no FIND results 2.1%
6. Search term missing from search command 2.0%
7. 1278 2.0%
8. PS command - no previous screen 1.8%
9. KW search in database w/o KW index 1.7%
10. Valid command at an inappropriate time 1.4%
11. All others 13.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 18.1%
2. FIND 13.7%
3. INDEXES 7.2%
4. COMMAND WORDS 5.4%
5. PASSWORDS 5.2%
6. Unrecognized term 5.0%
7. 3190 3.8%
8. DISPLAY 2.2%
9. AT 1.6%
10. DATES 1.6%
11. All others 36.0%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 27.3%
2. First word of command is invalid 11.8%
3. FIND command with invalid index name 10.1%
4. DISPLAY command-first of >1 screen 3.2%
5. DISPLAY command - middle of >1 screen 3.1%
6. 1278 3.0%
7. NS command - no next screen 2.4%
8. FIND command retrieves >1 book 2.4%
9. DISPLAY command - last of >1 screen 2.4%
10. FIND command retrieves 1 book 2.0%
11. All others 32.2%
Ten most frequent SHOW requests:
1. HISTORY 52.7%
2. GLOSSARY 7.9%
3. SEARCH 6.7%
4. SETTINGS 6.1%
5. DATABASE NEWS 4.2%
6. CC LOADING STATISTICS 3.6%
7. NEWS 1.8%
8. 3350 1.8%
9. MAIL STATUS 1.8%
10. UCSF PASSWORDS 1.2%
11. All others 12.1%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)