MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 12/01/01 through 12/07/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 699 2,398 3,097
Davis 1,820 200 2,020
Irvine 444 0 444
Los Angeles 10 446 456
Riverside 410 118 528
San Diego 388 156 544
San Francisco 189 0 189
Santa Barbara 189 142 331
Santa Cruz 175 155 330
LBL 0 78 78
LLL 0 85 85
Other - UC 52 232 284
CSL 0 118 118
CSU n/a 147 147
Other-Non-UC n/a 3,446 3,446
_______ ______ _____
4,376 7,721 12,097
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 208 588 8,444
2-4 a.m. 187 541 4,014
4-6 a.m. 131 464 3,330
6-8 a.m. 364 885 6,483
8-10 a.m. 1,482 5,098 36,265
10-12 a.m. 2,272 8,625 56,569
12-2 p.m. 2,171 7,559 55,224
2-4 p.m. 2,405 8,024 58,670
4-6 p.m. 1,537 5,283 44,360
6-8 p.m. 639 1,769 16,772
8-10 p.m. 410 1,241 7,075
10-12 p.m. 291 809 9,892
__________ __________ __________ _________________
Total: 12,097 40,886 307,098
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,758 7,204 8,962
Davis 7,030 820 7,850
Irvine 1,540 0 1,540
Los Angeles 34 1,183 1,217
Riverside 1,557 476 2,033
San Diego 1,427 273 1,700
San Francisco 307 0 307
Santa Barbara 890 297 1,187
Santa Cruz 842 419 1,261
LBL 0 47 47
LLL 0 233 233
Other - UC 15 569 584
CSL 0 141 141
CSU n/a 559 559
Other-Non-UC n/a 13,265 13,265
_______ ______ _____
15,400 25,486 40,886
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 13,424 53,034 66,458
Davis 46,375 4,369 50,744
Irvine 10,895 0 10,895
Los Angeles 98 9,164 9,262
Riverside 11,078 3,599 14,677
San Diego 6,746 2,193 8,939
San Francisco 2,331 0 2,331
Santa Barbara 8,444 1,961 10,405
Santa Cruz 4,545 3,526 8,071
LBL 0 490 490
LLL 0 2,352 2,352
Other - UC 44 5,367 5,411
CSL 0 726 726
CSU n/a 5,956 5,956
Other-Non-UC n/a 110,381 110,381
_______ ______ _____
103,980 203,118 307,098
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 2.3
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) 10:50
Average session length (minutes:seconds) 14:36
Longest session recorded (minutes:seconds) 1051
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 74.2
Retrievals per search - standard deviation 2062.8
Percent of searches completed with 0 results 27.5%
Percent of searches entered that are long 4.0%
Percent of long searches completed
(includes partial results) 66.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 39,370 36.0%
DISPLAY (excluding automatic displays) 34,961 32.0%
ACFIND 6 0.0%
BROWSE 212 0.2%
SELECT 169 0.2%
HELP 610 0.6%
EXPLAIN 730 0.7%
SET/RESET 2,726 2.5%
SHOW 288 0.3%
AT 2,569 2.4%
ADD ON (AND, OR, AND NOT) 1,497 1.4%
LOGON or LOGOFF 20,117 18.4%
COMMENT 2 0.0%
SAVE 587 0.5%
USE 800 0.7%
OTHER 4,659 4.3%
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 5,823 14.2% 1,347 23.1% 10 86.5 425.3
AUTHOR 1,892 4.6% 490 25.9% 14 111.6 603.9
CORPORATE AUTH 495 1.2% 180 36.4% 31 563.4 2273.6
EXACT CA 9 0.0% 0 0.0% 9 347.0 945.3
TITLE WORD 9,438 23.1% 3,052 32.3% 5 53.8 519.6
EXACT TITLE 6,100 14.9% 1,848 30.3% 2 22.4 131.2
TITLE -> TW 998 2.4% 217 21.7% 9 91.4 819.1
TITLE -> XT 1,463 3.6% 618 42.2% 2 8.9 59.5
SUBJECT 2,174 5.3% 732 33.7% 51 670.0 10361.1
EXACT SUBJECT 120 0.3% 31 25.8% 138 480.4 979.1
PERIODICAL 7,080 17.3% 1,532 21.6% 5 81.5 972.6
EXACT PE 2,595 6.3% 429 16.5% 2 24.5 335.6
RPE 3 0.0% 1 33.3% 6 5.5 2.1
XRP 1 0.0% 0 0.0% 18 18.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 63 0.2% 6 9.5% 13 166.2 347.7
DATE 439 1.1% 84 19.1% 5 46.9 240.1
FORM 464 1.1% 123 26.5% 14 445.2 3828.3
NUMBER* 34 0.1% 18 52.9% 2 187.9 656.9
MUSIC* 8 0.0% 7 87.5% 4 4.0 0.0
SERIES 879 2.1% 272 30.9% 3 47.8 253.3
UNIFORM TITLE 9 0.0% 1 11.1% 11 235.9 364.4
Other indexes 836 2.0% 336 40.2% 1 6.6 59.2
* 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 1,957 5.0% 541 27.6% 5 92.5 1263.9
Single 36,880 95.0% 10,221 27.7% 4 101.3 2500.9
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 13 6.8% 2 15.4% 16 55.2 69.3
CORPORATE AUTH 1 0.5% 0 0.0% 76 76.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 140 73.3% 24 17.1% 71 149.9 219.7
EXACT SUBJECT 34 17.8% 1 2.9% 133 217.7 216.7
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 3 1.6% 2 66.7% 1 1.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 202 100% 31 15.3% 67 150.4 210.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.1%
BRIEF 68.2%
LONG 10.1%
MARC 3.7%
FIELDS 3.0%
TAG 1.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.0%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 29.1%
2. First word of command is invalid 21.5%
3. Max. # of ports to a Z39 db are in use 14.9%
4. FIND command with invalid index name 10.5%
5. DISPLAY command contains invalid word 3.7%
6. Search term missing from search command 1.9%
7. PS command - no previous screen 1.6%
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 12.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.3%
2. FIND 12.5%
3. COMMAND WORDS 6.6%
4. INDEXES 6.0%
5. PASSWORDS 4.7%
6. Unrecognized term 4.5%
7. DISPLAY 2.7%
8. DATABASES 2.7%
9. G961 1.9%
10. CATALOG 1.9%
11. All others 34.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.8%
2. First word of command is invalid 14.0%
3. FIND command with invalid index name 12.2%
4. FIND command retrieves >1 book 3.7%
5. DISPLAY command-first of >1 screen 3.5%
6. DISPLAY command - middle of >1 screen 3.1%
7. NS command - no next screen 2.8%
8. DISPLAY command-complete in one screen 2.6%
9. DISPLAY command - last of >1 screen 2.6%
10. FIND command retrieves 1 book 2.5%
11. All others 27.2%
Ten most frequent SHOW requests:
1. HISTORY 36.7%
2. MAIL STATUS 8.8%
3. GLOSSARY 5.3%
4. SEARCH 4.2%
5. SETTINGS 3.2%
6. DATABASE NEWS 2.8%
7. NEWS 2.8%
8. SYSTEM NEWS 1.4%
9. MAIL SETTINGS 1.4%
10. SYSTEMS INFORMATION 1.4%
11. All others 31.8%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)