MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/24/01 through 03/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,061 2,948 4,009
Davis 2,502 280 2,782
Irvine 909 0 909
Los Angeles 121 651 772
Riverside 657 101 758
San Diego 505 202 707
San Francisco 306 0 306
Santa Barbara 534 238 772
Santa Cruz 455 278 733
LBL 0 119 119
LLL 0 78 78
Other - UC 19 295 314
CSL 0 194 194
CSU n/a 199 199
Other-Non-UC n/a 4,340 4,340
_______ ______ _____
7,069 9,923 16,992
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 263 782 6,756
2-4 a.m. 133 465 5,078
4-6 a.m. 156 517 2,683
6-8 a.m. 405 978 7,138
8-10 a.m. 1,998 6,509 46,538
10-12 a.m. 3,149 10,629 80,734
12-2 p.m. 3,123 11,087 78,540
2-4 p.m. 3,490 11,778 86,245
4-6 p.m. 2,463 7,979 64,835
6-8 p.m. 829 2,546 23,106
8-10 p.m. 565 1,898 15,447
10-12 p.m. 418 1,366 11,525
__________ __________ __________ _________________
Total: 16,992 56,534 428,625
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,366 8,060 11,426
Davis 9,838 989 10,827
Irvine 3,670 0 3,670
Los Angeles 267 1,635 1,902
Riverside 2,561 402 2,963
San Diego 1,721 340 2,061
San Francisco 612 0 612
Santa Barbara 1,927 617 2,544
Santa Cruz 2,174 656 2,830
LBL 0 185 185
LLL 0 168 168
Other - UC 4 640 644
CSL 0 279 279
CSU n/a 944 944
Other-Non-UC n/a 15,479 15,479
_______ ______ _____
26,140 30,394 56,534
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 27,555 66,930 94,485
Davis 65,146 4,087 69,233
Irvine 24,674 0 24,674
Los Angeles 2,391 16,103 18,494
Riverside 17,150 2,519 19,669
San Diego 8,431 3,418 11,849
San Francisco 3,900 0 3,900
Santa Barbara 14,073 5,713 19,786
Santa Cruz 10,607 4,921 15,528
LBL 0 1,610 1,610
LLL 0 2,180 2,180
Other - UC 47 5,309 5,356
CSL 0 2,708 2,708
CSU n/a 11,298 11,298
Other-Non-UC n/a 127,855 127,855
_______ ______ _____
173,974 254,651 428,625
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 5.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 8:39
Average session length (minutes:seconds) 13:11
Longest session recorded (minutes:seconds) 545:17
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 67.2
Retrievals per search - standard deviation 940.9
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 61.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 54,761 35.1%
DISPLAY (excluding automatic displays) 50,794 32.5%
ACFIND 8 0.0%
BROWSE 631 0.4%
SELECT 277 0.2%
HELP 1,381 0.9%
EXPLAIN 1,292 0.8%
SET/RESET 4,026 2.6%
SHOW 397 0.3%
AT 3,481 2.2%
ADD ON (AND, OR, AND NOT) 1,744 1.1%
LOGON or LOGOFF 27,801 17.8%
COMMENT 5 0.0%
SAVE 1,155 0.7%
USE 1,417 0.9%
OTHER 6,917 4.4%
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 8,117 14.0% 1,917 23.6% 10 98.5 447.8
AUTHOR 2,448 4.2% 572 23.4% 13 131.9 385.7
CORPORATE AUTH 545 0.9% 195 35.8% 22 610.2 2739.9
EXACT CA 7 0.0% 2 28.6% 42 64.8 75.2
TITLE WORD 14,585 25.2% 4,374 30.0% 4 36.4 142.7
EXACT TITLE 8,200 14.2% 2,232 27.2% 2 22.6 213.4
TITLE -> TW 1,261 2.2% 290 23.0% 8 48.2 134.1
TITLE -> XT 1,497 2.6% 646 43.2% 1 9.1 67.3
SUBJECT 3,958 6.8% 1,525 38.5% 43 312.0 1004.2
EXACT SUBJECT 182 0.3% 38 20.9% 36 715.7 4659.4
PERIODICAL 9,095 15.7% 1,871 20.6% 4 92.8 1199.5
EXACT PE 3,904 6.7% 583 14.9% 3 44.1 1056.5
RPE 1 0.0% 0 0.0% 11 11.0 0.0
XRP 2 0.0% 0 0.0% 335 335.0 468.1
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 123 0.2% 42 34.1% 32 516.0 1545.4
DATE 1,219 2.1% 272 22.3% 2 265.1 4324.0
FORM 753 1.3% 194 25.8% 14 150.9 558.2
NUMBER* 57 0.1% 27 47.4% 2 31.9 125.6
MUSIC* 107 0.2% 72 67.3% 4 168.1 632.0
SERIES 1,134 2.0% 380 33.5% 4 166.3 2949.7
UNIFORM TITLE 14 0.0% 7 50.0% 125 544.0 1230.2
Other indexes 720 1.2% 335 46.5% 1 10.3 54.3
* 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 3,895 7.2% 1,033 26.5% 3 62.0 380.2
Single 49,949 92.8% 13,454 26.9% 5 95.1 1152.7
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 20 3.4% 2 10.0% 25 97.9 160.7
CORPORATE AUTH 2 0.3% 1 50.0% 4 4.0 0.0
EXACT CA 2 0.3% 1 50.0% 8 8.0 0.0
SUBJECT 459 78.7% 76 16.6% 37 129.1 308.4
EXACT SUBJECT 98 16.8% 12 12.2% 65 162.9 218.0
UNIFORM TITLE 1 0.2% 1 100% 0 0.0 0.0
SERIES 1 0.2% 0 0.0% 199 199.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 600 100% 93 15.5% 37 129.7 285.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.4%
BRIEF 68.4%
LONG 9.4%
MARC 3.7%
FIELDS 3.1%
TAG 2.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.5%
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 28.7%
2. First word of command is invalid 27.0%
3. FIND command with invalid index name 12.0%
4. DISPLAY command contains invalid word 4.1%
5. Search term missing from search command 2.5%
6. KW search in database w/o KW index 2.4%
7. Max. # of ports to a Z39 db are in use 2.2%
8. PS command - no previous screen 2.1%
9. Valid command at an inappropriate time 1.6%
10. DISPLAY command - no FIND results 1.4%
11. All others 16.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.2%
2. FIND 14.5%
3. INDEXES 7.9%
4. COMMAND WORDS 5.6%
5. Unrecognized term 5.0%
6. DISPLAY 2.9%
7. PASSWORDS 2.4%
8. CATALOG 2.3%
9. AT 2.0%
10. NRLF 2.0%
11. All others 28.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.4%
2. First word of command is invalid 15.8%
3. FIND command with invalid index name 11.1%
4. DISPLAY command - middle of >1 screen 3.9%
5. FIND command retrieves >1 book 3.5%
6. DISPLAY command-first of >1 screen 3.0%
7. NS command - no next screen 2.5%
8. DISPLAY command - last of >1 screen 2.1%
9. TW search with zero results 2.1%
10. Help requested from SET DB command 2.0%
11. All others 31.6%
Ten most frequent SHOW requests:
1. HISTORY 43.0%
2. SEARCH 12.8%
3. GLOSSARY 8.9%
4. TIME 8.1%
5. MAIL STATUS 4.9%
6. SETTINGS 4.2%
7. SYSTEM NEWS 2.6%
8. LIBRARY NEWS 1.6%
9. LOCATION 1.3%
10. NEWS 1.3%
11. All others 11.5%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)