MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 01/27/01 through 02/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,064 2,910 3,974
Davis 2,211 264 2,475
Irvine 959 0 959
Los Angeles 146 699 845
Riverside 688 133 821
San Diego 583 219 802
San Francisco 408 0 408
Santa Barbara 561 302 863
Santa Cruz 413 198 611
LBL 0 104 104
LLL 0 103 103
Other - UC 68 241 309
CSL 0 179 179
CSU n/a 163 163
Other-Non-UC n/a 4,320 4,320
_______ ______ _____
7,101 9,835 16,936
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 167 514 3,482
2-4 a.m. 153 628 6,326
4-6 a.m. 183 481 6,405
6-8 a.m. 457 1,404 11,201
8-10 a.m. 2,040 6,294 46,266
10-12 a.m. 3,185 10,202 76,664
12-2 p.m. 3,169 10,789 82,167
2-4 p.m. 3,613 11,955 89,296
4-6 p.m. 2,234 6,849 64,228
6-8 p.m. 868 2,467 19,763
8-10 p.m. 502 1,596 13,292
10-12 p.m. 365 1,198 13,273
__________ __________ __________ _________________
Total: 16,936 54,377 432,363
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,375 8,078 11,453
Davis 7,770 1,088 8,858
Irvine 3,545 0 3,545
Los Angeles 364 1,856 2,220
Riverside 2,262 297 2,559
San Diego 1,662 418 2,080
San Francisco 881 0 881
Santa Barbara 1,711 726 2,437
Santa Cruz 2,193 408 2,601
LBL 0 140 140
LLL 0 343 343
Other - UC 61 630 691
CSL 0 371 371
CSU n/a 858 858
Other-Non-UC n/a 15,340 15,340
_______ ______ _____
23,824 30,553 54,377
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 24,507 60,915 85,422
Davis 47,514 5,238 52,752
Irvine 21,041 0 21,041
Los Angeles 2,722 18,354 21,076
Riverside 21,131 3,185 24,316
San Diego 10,002 3,994 13,996
San Francisco 5,228 0 5,228
Santa Barbara 13,176 6,113 19,289
Santa Cruz 12,367 3,945 16,312
LBL 0 1,510 1,510
LLL 0 2,602 2,602
Other - UC 196 5,778 5,974
CSL 0 3,708 3,708
CSU n/a 13,839 13,839
Other-Non-UC n/a 145,298 145,298
_______ ______ _____
157,884 274,479 432,363
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.9
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 8:43
Average session length (minutes:seconds) 13:11
Longest session recorded (minutes:seconds) 944:11
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 70.1
Retrievals per search - standard deviation 842.0
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 61.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 52,597 34.9%
DISPLAY (excluding automatic displays) 48,985 32.5%
ACFIND 10 0.0%
BROWSE 526 0.3%
SELECT 440 0.3%
HELP 1,191 0.8%
EXPLAIN 1,212 0.8%
SET/RESET 4,091 2.7%
SHOW 425 0.3%
AT 2,999 2.0%
ADD ON (AND, OR, AND NOT) 1,734 1.1%
LOGON or LOGOFF 27,365 18.1%
COMMENT 7 0.0%
SAVE 1,219 0.8%
USE 1,340 0.9%
OTHER 6,759 4.5%
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 8,473 15.3% 2,014 23.8% 9 93.4 479.0
AUTHOR 2,468 4.4% 571 23.1% 11 120.8 557.6
CORPORATE AUTH 613 1.1% 249 40.6% 16 1025.1 5868.3
EXACT CA 19 0.0% 2 10.5% 301 1071.0 1643.8
TITLE WORD 13,600 24.5% 4,310 31.7% 4 59.3 840.6
EXACT TITLE 7,631 13.7% 2,133 27.9% 2 27.2 363.3
TITLE -> TW 1,265 2.3% 302 23.9% 10 84.0 581.1
TITLE -> XT 1,477 2.7% 735 49.8% 1 13.0 91.5
SUBJECT 3,632 6.5% 1,462 40.3% 35 416.2 2143.5
EXACT SUBJECT 321 0.6% 67 20.9% 93 476.4 904.8
PERIODICAL 8,930 16.1% 1,772 19.8% 4 75.7 880.0
EXACT PE 3,458 6.2% 490 14.2% 3 23.4 241.9
RPE 1 0.0% 1 100% 0 0.0 0.0
XRP 1 0.0% 0 0.0% 4 4.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 77 0.1% 14 18.2% 72 264.0 424.0
DATE 782 1.4% 187 23.9% 5 58.3 294.7
FORM 686 1.2% 174 25.4% 12 178.3 929.8
NUMBER* 20 0.0% 10 50.0% 1 118.3 341.9
MUSIC* 8 0.0% 3 37.5% 2 2.8 1.9
SERIES 1,357 2.4% 422 31.1% 6 49.1 219.7
UNIFORM TITLE 14 0.0% 4 28.6% 26 74.6 102.3
Other indexes 706 1.3% 266 37.7% 1 11.7 67.8
* 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 3,607 7.0% 1,034 28.7% 3 76.4 834.2
Single 48,100 93.0% 13,068 27.2% 5 98.2 1010.3
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 53 10.9% 12 22.6% 3 62.3 127.7
CORPORATE AUTH 4 0.8% 1 25.0% 52 85.3 102.2
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 386 79.4% 89 23.1% 24 124.3 350.7
EXACT SUBJECT 26 5.3% 4 15.4% 92 485.0 1227.6
UNIFORM TITLE 2 0.4% 2 100% 0 0.0 0.0
SERIES 15 3.1% 4 26.7% 69 67.6 62.2
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 497 100% 115 23.1% 25 135.2 434.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.4%
BRIEF 68.7%
LONG 10.7%
MARC 2.8%
FIELDS 2.7%
TAG 2.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.5%
Ten most frequent errors:
1. NS command - no next screen 30.3%
2. First word of command is invalid 26.1%
3. FIND command with invalid index name 12.0%
4. DISPLAY command contains invalid word 4.6%
5. Search term missing from search command 2.5%
6. PS command - no previous screen 2.0%
7. KW search in database w/o KW index 2.0%
8. Max. # of ports to a Z39 db are in use 2.0%
9. Valid command at an inappropriate time 1.7%
10. DISPLAY command - no FIND results 1.6%
11. All others 15.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.7%
2. FIND 15.5%
3. INDEXES 6.7%
4. COMMAND WORDS 5.8%
5. Unrecognized term 4.8%
6. PASSWORDS 3.6%
7. CATALOG 2.5%
8. LOCATE (PE DB) 2.1%
9. DATABASES 2.1%
10. DISPLAY 1.9%
11. All others 27.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.6%
2. First word of command is invalid 13.9%
3. FIND command with invalid index name 13.3%
4. DISPLAY command - middle of >1 screen 4.3%
5. DISPLAY command-first of >1 screen 2.8%
6. NS command - no next screen 2.4%
7. TW search with zero results 2.4%
8. FIND command retrieves >1 book 2.3%
9. F/BR with index invalid in current DB 2.3%
10. KW search in database w/o KW index 2.2%
11. All others 30.5%
Ten most frequent SHOW requests:
1. HISTORY 33.8%
2. TIME 19.4%
3. SEARCH 14.7%
4. GLOSSARY 8.1%
5. SETTINGS 2.9%
6. DATABASE NEWS 2.7%
7. MAIL STATUS 2.2%
8. SYSTEM NEWS 1.5%
9. UCSF PASSWORDS 1.2%
10. TIMEOUT SETTING 1.2%
11. All others 12.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)