MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/01/02 through 02/28/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,716 8,458 11,174
Davis 5,998 708 6,706
Irvine 1,467 0 1,467
Los Angeles 53 1,570 1,623
Riverside 1,588 305 1,893
San Diego 1,272 475 1,747
San Francisco 621 0 621
Santa Barbara 1,219 371 1,590
Santa Cruz 687 667 1,354
LBL 0 310 310
LLL 0 212 212
Other - UC 116 785 901
CSL 0 636 636
CSU n/a 589 589
Other-Non UC n/a 14,406 14,406
_______ ______ _____
15,737 29,492 45,229
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,013 3,410 32,270
2-4 a.m. 802 2,942 28,132
4-6 a.m. 696 2,712 20,450
6-8 a.m. 1,555 4,459 37,554
8-10 a.m. 5,782 21,783 151,178
10-12 a.m. 8,557 33,067 233,315
12-2 p.m. 7,933 29,576 220,042
2-4 p.m. 9,138 33,435 253,704
4-6 p.m. 5,480 21,224 155,775
6-8 p.m. 1,946 7,365 68,025
8-10 p.m. 1,161 4,422 39,810
10-12 p.m. 1,166 4,214 35,723
__________ __________ __________ _________________
Total: 45,229 168,609 1,275,978
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,792 27,174 34,966
Davis 24,084 3,618 27,702
Irvine 7,415 0 7,415
Los Angeles 563 3,789 4,352
Riverside 7,388 847 8,235
San Diego 4,794 1,073 5,867
San Francisco 1,429 0 1,429
Santa Barbara 5,354 899 6,253
Santa Cruz 5,254 1,419 6,673
LBL 0 406 406
LLL 0 592 592
Other - UC 244 2,402 2,646
CSL 0 713 713
CSU n/a 2,440 2,440
Other-Non UC n/a 58,920 58,920
_______ ______ _____
64,317 104,292 168,609
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 68,931 213,977 282,908
Davis 159,170 20,611 179,781
Irvine 48,315 0 48,315
Los Angeles 2,021 32,413 34,434
Riverside 50,260 7,318 57,578
San Diego 25,366 10,513 35,879
San Francisco 13,350 0 13,350
Santa Barbara 44,172 7,557 51,729
Santa Cruz 26,261 13,823 40,084
LBL 0 3,544 3,544
LLL 0 5,573 5,573
Other - UC 2,945 20,516 23,461
CSL 0 5,563 5,563
CSU n/a 26,163 26,163
Other-Non UC n/a 467,616 467,616
_______ ______ _____
440,791 835,187 1,275,978
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 2.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.7
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1134
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 70.3
Retrievals per search - standard deviation 1742.0
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 65.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 162,790 35.9%
DISPLAY (excluding automatic displays) 154,581 34.1%
ACFIND 49 0.0%
BROWSE 1,440 0.3%
SELECT 748 0.2%
HELP 2,810 0.6%
EXPLAIN 2,730 0.6%
SET/RESET 8,768 1.9%
SHOW 911 0.2%
AT 11,306 2.5%
ADD ON (AND, OR, AND NOT) 5,725 1.3%
LOGON or LOGOFF 78,714 17.3%
COMMENT 3 0.0%
SAVE 2,834 0.6%
USE 3,046 0.7%
OTHER 17,377 3.8%
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 23,454 13.8% 5,397 23.0% 10 84.3 474.2
AUTHOR 6,537 3.8% 1,680 25.7% 11 107.3 599.1
CORPORATE AUTH 2,125 1.2% 752 35.4% 16 379.2 2098.2
EXACT CA 36 0.0% 10 27.8% 32 134.1 315.9
TITLE WORD 40,244 23.7% 12,860 32.0% 4 50.2 1220.7
EXACT TITLE 25,128 14.8% 7,464 29.7% 2 19.0 127.7
TITLE -> TW 3,742 2.2% 942 25.2% 8 89.6 898.5
TITLE -> XT 4,438 2.6% 1,939 43.7% 1 10.2 70.4
SUBJECT 7,270 4.3% 2,529 34.8% 41 695.8 7976.5
EXACT SUBJECT 591 0.3% 147 24.9% 65 605.6 2612.2
PERIODICAL 31,601 18.6% 6,483 20.5% 5 85.1 1207.6
EXACT PE 12,154 7.1% 1,727 14.2% 2 20.3 288.7
RPE 10 0.0% 1 10.0% 4 10.4 12.7
XRP 7 0.0% 0 0.0% 5 8.9 8.6
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 263 0.2% 39 14.8% 63 2345.7 20575.7
DATE 1,960 1.2% 481 24.5% 5 120.6 1234.0
FORM 1,895 1.1% 372 19.6% 13 203.1 1662.3
NUMBER* 94 0.1% 51 54.3% 2 957.3 4065.7
MUSIC* 42 0.0% 28 66.7% 16 140.8 382.7
SERIES 4,474 2.6% 1,443 32.3% 4 83.1 810.1
UNIFORM TITLE 47 0.0% 14 29.8% 60 509.1 995.4
Other indexes 4,015 2.4% 1,513 37.7% 1 17.8 307.4
* 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 8,729 5.4% 2,388 27.4% 4 74.1 684.9
Single 152,085 94.6% 40,987 26.9% 4 97.6 2118.3
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 225 16.8% 47 20.9% 6 36.1 101.0
CORPORATE AUTH 6 0.4% 0 0.0% 5 78.3 147.2
EXACT CA 2 0.1% 0 0.0% 10 9.5 10.6
SUBJECT 894 66.9% 220 24.6% 50 276.0 2629.3
EXACT SUBJECT 202 15.1% 56 27.7% 39 259.5 545.1
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 8 0.6% 1 12.5% 9 16.7 19.6
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,368 100% 328 24.0% 25 223.6 2128.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.4%
BRIEF 65.5%
LONG 10.1%
MARC 4.3%
FIELDS 3.0%
TAG 2.8%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.8%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.8%
Ten most frequent errors:
1. NS command - no next screen 33.6%
2. First word of command is invalid 26.0%
3. FIND command with invalid index name 11.8%
4. DISPLAY command contains invalid word 4.7%
5. Search term missing from search command 2.5%
6. PS command - no previous screen 1.8%
7. DISPLAY command - no FIND results 1.7%
8. Valid command at an inappropriate time 1.4%
9. KW search in database w/o KW index 1.4%
10. Command contains escape or arrow key 1.2%
11. All others 13.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.1%
2. FIND 11.9%
3. INDEXES 6.2%
4. COMMAND WORDS 6.0%
5. Unrecognized term 5.8%
6. PASSWORDS 4.8%
7. DATABASES 2.4%
8. DISPLAY 2.2%
9. CATALOG 2.1%
10. NRLF 2.0%
11. All others 31.4%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.5%
2. First word of command is invalid 14.1%
3. FIND command with invalid index name 11.3%
4. DISPLAY command - middle of >1 screen 4.3%
5. DISPLAY command-first of >1 screen 2.9%
6. NS command - no next screen 2.7%
7. FIND command retrieves >1 book 2.5%
8. DISPLAY command-complete in one screen 2.4%
9. DISPLAY command - last of >1 screen 2.0%
10. F/BR with index invalid in current DB 1.9%
11. All others 31.3%
Ten most frequent SHOW requests:
1. HISTORY 54.0%
2. SEARCH 8.1%
3. MAIL STATUS 7.8%
4. GLOSSARY 7.4%
5. SETTINGS 4.2%
6. TIME 3.1%
7. DATABASE NEWS 3.0%
8. TERMINAL 1.1%
9. NEWS 0.9%
10. STATISTICS 0.8%
11. All others 9.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)