MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/30/01 through 07/06/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 544 1,791 2,335
Davis 1,220 179 1,399
Irvine 521 0 521
Los Angeles 14 425 439
Riverside 363 72 435
San Diego 268 128 396
San Francisco 226 0 226
Santa Barbara 153 169 322
Santa Cruz 267 117 384
LBL 0 100 100
LLL 0 54 54
Other - UC 26 154 180
CSL 0 88 88
CSU n/a 85 85
Other-Non-UC n/a 3,392 3,392
_______ ______ _____
3,602 6,754 10,356
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 280 881 6,627
2-4 a.m. 215 740 6,207
4-6 a.m. 169 576 5,311
6-8 a.m. 383 1,359 7,673
8-10 a.m. 1,303 4,395 27,494
10-12 a.m. 1,936 6,797 41,544
12-2 p.m. 1,848 6,720 51,253
2-4 p.m. 2,054 7,151 45,078
4-6 p.m. 1,228 3,843 27,635
6-8 p.m. 407 1,073 11,862
8-10 p.m. 275 701 5,254
10-12 p.m. 258 618 4,432
__________ __________ __________ _________________
Total: 10,356 34,854 240,370
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,419 5,407 6,826
Davis 3,866 826 4,692
Irvine 1,929 0 1,929
Los Angeles 20 1,101 1,121
Riverside 1,873 135 2,008
San Diego 768 274 1,042
San Francisco 370 0 370
Santa Barbara 415 350 765
Santa Cruz 2,556 279 2,835
LBL 0 148 148
LLL 0 199 199
Other - UC 17 538 555
CSL 0 305 305
CSU n/a 307 307
Other-Non-UC n/a 11,752 11,752
_______ ______ _____
13,233 21,621 34,854
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,528 34,574 45,102
Davis 22,553 3,942 26,495
Irvine 15,525 0 15,525
Los Angeles 175 9,455 9,630
Riverside 11,446 1,207 12,653
San Diego 3,826 2,100 5,926
San Francisco 2,106 0 2,106
Santa Barbara 3,350 2,406 5,756
Santa Cruz 6,058 2,457 8,515
LBL 0 1,317 1,317
LLL 0 2,298 2,298
Other - UC 311 3,685 3,996
CSL 0 1,832 1,832
CSU n/a 3,165 3,165
Other-Non-UC n/a 96,054 96,054
_______ ______ _____
75,878 164,492 240,370
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 2.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:40
Average session length (minutes:seconds) 15:11
Longest session recorded (minutes:seconds) 1134
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 56.9
Retrievals per search - standard deviation 999.1
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 66.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 33,541 36.4%
DISPLAY (excluding automatic displays) 29,179 31.6%
ACFIND 5 0.0%
BROWSE 110 0.1%
SELECT 75 0.1%
HELP 547 0.6%
EXPLAIN 654 0.7%
SET/RESET 2,472 2.7%
SHOW 156 0.2%
AT 1,678 1.8%
ADD ON (AND, OR, AND NOT) 1,305 1.4%
LOGON or LOGOFF 16,961 18.4%
COMMENT 2 0.0%
SAVE 749 0.8%
USE 842 0.9%
OTHER 3,988 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 5,487 15.5% 1,315 24.0% 10 91.3 876.4
AUTHOR 1,391 3.9% 338 24.3% 11 87.6 268.9
CORPORATE AUTH 364 1.0% 138 37.9% 19 380.7 1235.6
EXACT CA 6 0.0% 1 16.7% 3 58.8 125.9
TITLE WORD 7,675 21.7% 2,403 31.3% 4 59.0 1803.6
EXACT TITLE 7,511 21.3% 2,080 27.7% 2 17.5 124.4
TITLE -> TW 935 2.6% 266 28.4% 9 47.8 142.8
TITLE -> XT 1,032 2.9% 506 49.0% 1 10.1 73.2
SUBJECT 1,271 3.6% 463 36.4% 41 372.5 1457.6
EXACT SUBJECT 69 0.2% 16 23.2% 98 507.3 1008.1
PERIODICAL 5,081 14.4% 1,052 20.7% 5 111.1 1413.3
EXACT PE 2,082 5.9% 349 16.8% 2 35.1 659.5
RPE 1 0.0% 0 0.0% 19 19.0 0.0
XRP 1 0.0% 0 0.0% 5 5.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 67 0.2% 19 28.4% 26 127.2 304.7
DATE 425 1.2% 109 25.6% 3 45.0 194.3
FORM 407 1.2% 112 27.5% 11 330.7 3039.6
NUMBER* 6 0.0% 3 50.0% 16 252.7 423.0
MUSIC* 3 0.0% 2 66.7% 15 15.0 0.0
SERIES 870 2.5% 279 32.1% 2 49.2 167.6
UNIFORM TITLE 1 0.0% 0 0.0% 30 30.0 0.0
Other indexes 605 1.7% 225 37.2% 1 6.9 34.6
* 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 2,086 6.3% 644 30.9% 3 43.4 311.8
Single 31,002 93.7% 8,357 27.0% 4 82.2 1226.4
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 16 15.2% 5 31.3% 3 107.0 291.4
CORPORATE AUTH 1 1.0% 0 0.0% 1 1.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 79 75.2% 19 24.0% 34 108.6 162.3
EXACT SUBJECT 6 5.7% 0 0.0% 12 42.5 77.2
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 3 2.9% 0 0.0% 4 40.3 65.5
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 108 100% 25 23.1% 22 98.2 174.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.8%
BRIEF 66.1%
LONG 12.8%
MARC 4.5%
FIELDS 1.6%
TAG 2.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.6%
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 32.8%
2. First word of command is invalid 25.2%
3. FIND command with invalid index name 12.3%
4. DISPLAY command contains invalid word 4.1%
5. Search term missing from search command 2.9%
6. Max. # of ports to a Z39 db are in use 2.0%
7. PS command - no previous screen 1.8%
8. KW search in database w/o KW index 1.8%
9. DISPLAY command - no FIND results 1.4%
10. Valid command at an inappropriate time 1.3%
11. All others 14.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.5%
2. FIND 13.0%
3. Unrecognized term 7.2%
4. COMMAND WORDS 7.0%
5. INDEXES 6.1%
6. PASSWORDS 3.2%
7. DISPLAY 2.3%
8. DATABASES 2.0%
9. ADD-ON SEARCH 1.8%
10. CATALOG 1.5%
11. All others 33.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.0%
2. First word of command is invalid 12.4%
3. FIND command with invalid index name 10.8%
4. DISPLAY command - middle of >1 screen 5.6%
5. DISPLAY command-first of >1 screen 3.2%
6. NS command - no next screen 2.7%
7. FIND command retrieves >1 book 2.3%
8. TW search with zero results 2.3%
9. DISPLAY command-complete in one screen 2.2%
10. F/BR with index invalid in current DB 2.2%
11. All others 32.2%
Ten most frequent SHOW requests:
1. HISTORY 41.1%
2. GLOSSARY 15.8%
3. SEARCH 10.3%
4. SETTINGS 6.8%
5. DATABASE NEWS 3.4%
6. MAIL STATUS 2.1%
7. LOCATION 1.4%
8. Z39.50 NEWS 1.4%
9. 2292 1.4%
10. 5040 1.4%
11. All others 15.1%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)