MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/31/01 through 04/06/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 964 2,691 3,655
Davis 1,859 244 2,103
Irvine 746 0 746
Los Angeles 14 581 595
Riverside 610 111 721
San Diego 477 229 706
San Francisco 322 0 322
Santa Barbara 314 247 561
Santa Cruz 347 194 541
LBL 0 115 115
LLL 0 90 90
Other - UC 66 273 339
CSL 0 127 127
CSU n/a 193 193
Other-Non-UC n/a 4,624 4,624
_______ ______ _____
5,719 9,719 15,438
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 275 838 5,909
2-4 a.m. 223 778 5,951
4-6 a.m. 255 698 7,296
6-8 a.m. 407 1,091 9,089
8-10 a.m. 1,821 5,914 47,657
10-12 a.m. 2,758 8,039 63,581
12-2 p.m. 2,669 9,164 83,443
2-4 p.m. 3,103 10,493 80,154
4-6 p.m. 2,126 6,848 51,872
6-8 p.m. 803 2,350 22,342
8-10 p.m. 557 1,516 10,686
10-12 p.m. 441 1,098 7,292
__________ __________ __________ _________________
Total: 15,438 48,827 395,272
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,427 7,730 10,157
Davis 7,266 862 8,128
Irvine 2,378 0 2,378
Los Angeles 24 1,379 1,403
Riverside 2,017 219 2,236
San Diego 1,094 426 1,520
San Francisco 683 0 683
Santa Barbara 876 622 1,498
Santa Cruz 1,605 496 2,101
LBL 0 154 154
LLL 0 483 483
Other - UC 48 725 773
CSL 0 305 305
CSU n/a 876 876
Other-Non-UC n/a 16,132 16,132
_______ ______ _____
18,418 30,409 48,827
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 20,205 69,021 89,226
Davis 53,436 3,593 57,029
Irvine 18,127 0 18,127
Los Angeles 515 12,677 13,192
Riverside 14,990 3,091 18,081
San Diego 6,618 3,765 10,383
San Francisco 4,638 0 4,638
Santa Barbara 6,597 4,261 10,858
Santa Cruz 13,228 5,167 18,395
LBL 0 1,833 1,833
LLL 0 4,947 4,947
Other - UC 489 5,478 5,967
CSL 0 1,814 1,814
CSU n/a 9,686 9,686
Other-Non-UC n/a 131,096 131,096
_______ ______ _____
138,843 256,429 395,272
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:41
Average session length (minutes:seconds) 13:46
Longest session recorded (minutes:seconds) 720:26
Average number of searches completed per session 3.1
Retrievals per search - median 2.0
Retrievals per search - average 75.0
Retrievals per search - standard deviation 1298.0
Percent of searches completed with 0 results 27.9%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 59.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 47,232 35.0%
DISPLAY (excluding automatic displays) 43,797 32.4%
ACFIND 9 0.0%
BROWSE 530 0.4%
SELECT 355 0.3%
HELP 970 0.7%
EXPLAIN 935 0.7%
SET/RESET 3,872 2.9%
SHOW 311 0.2%
AT 2,534 1.9%
ADD ON (AND, OR, AND NOT) 1,564 1.2%
LOGON or LOGOFF 24,693 18.3%
COMMENT 0 0.0%
SAVE 1,290 1.0%
USE 1,140 0.8%
OTHER 5,876 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 7,320 14.9% 1,759 24.0% 11 80.9 395.2
AUTHOR 1,886 3.8% 493 26.1% 16 131.1 551.6
CORPORATE AUTH 569 1.2% 217 38.1% 35 887.4 5274.8
EXACT CA 10 0.0% 5 50.0% 164 332.4 502.0
TITLE WORD 13,069 26.5% 4,074 31.2% 4 48.7 598.1
EXACT TITLE 6,573 13.3% 2,145 32.6% 2 19.8 117.4
TITLE -> TW 1,220 2.5% 282 23.1% 10 91.5 689.6
TITLE -> XT 1,493 3.0% 649 43.5% 2 17.2 226.3
SUBJECT 2,601 5.3% 952 36.6% 56 651.9 5529.9
EXACT SUBJECT 168 0.3% 30 17.9% 36 423.9 909.7
PERIODICAL 8,170 16.6% 1,804 22.1% 4 91.9 1400.4
EXACT PE 3,016 6.1% 437 14.5% 3 35.8 520.9
RPE 2 0.0% 1 50.0% 3 3.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 50 0.1% 10 20.0% 55 374.8 1229.5
DATE 630 1.3% 153 24.3% 4 96.3 349.3
FORM 491 1.0% 130 26.5% 17 202.8 703.7
NUMBER* 18 0.0% 7 38.9% 2 795.5 1147.5
MUSIC* 51 0.1% 28 54.9% 2 19.9 71.1
SERIES 1,076 2.2% 362 33.6% 3 49.7 154.9
UNIFORM TITLE 13 0.0% 2 15.4% 24 71.3 119.3
Other indexes 824 1.7% 321 39.0% 1 19.1 84.3
* 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 2,647 5.7% 807 30.5% 4 87.4 536.4
Single 43,799 94.3% 12,206 27.9% 5 102.6 1577.4
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 58 11.6% 14 24.1% 7 54.6 146.7
CORPORATE AUTH 2 0.4% 1 50.0% 108 108.0 0.0
EXACT CA 1 0.2% 1 100% 0 0.0 0.0
SUBJECT 423 84.9% 95 22.5% 83 251.4 1288.6
EXACT SUBJECT 13 2.6% 4 30.8% 60 171.1 263.5
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.2% 0 0.0% 2 2.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 506 100% 117 23.1% 55 223.0 1186.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.3%
BRIEF 68.1%
LONG 8.7%
MARC 4.8%
FIELDS 2.7%
TAG 2.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.2%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 29.6%
2. First word of command is invalid 26.9%
3. FIND command with invalid index name 11.4%
4. DISPLAY command contains invalid word 4.3%
5. Max. # of ports to a Z39 db are in use 2.7%
6. Search term missing from search command 2.5%
7. KW search in database w/o KW index 2.1%
8. PS command - no previous screen 2.1%
9. Command contains escape or arrow key 1.6%
10. DISPLAY command - no FIND results 1.5%
11. All others 15.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.8%
2. FIND 12.5%
3. INDEXES 9.4%
4. COMMAND WORDS 5.8%
5. Unrecognized term 5.5%
6. PASSWORDS 4.4%
7. DATABASES 3.3%
8. DISPLAY 2.9%
9. CATALOG 2.0%
10. NRLF 1.9%
11. All others 27.5%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.8%
2. First word of command is invalid 13.9%
3. FIND command with invalid index name 11.9%
4. DISPLAY command - middle of >1 screen 4.8%
5. F/BR with index invalid in current DB 3.0%
6. FIND command retrieves >1 book 2.9%
7. DISPLAY command-first of >1 screen 2.9%
8. NS command - no next screen 2.5%
9. DISPLAY command-complete in one screen 2.3%
10. TW search with zero results 2.2%
11. All others 30.8%
Ten most frequent SHOW requests:
1. HISTORY 44.8%
2. SEARCH 20.7%
3. GLOSSARY 5.9%
4. DATABASE NEWS 3.8%
5. SETTINGS 2.8%
6. MEDLINE NEWS 2.8%
7. 3399 1.7%
8. NEWS 1.0%
9. 2292 1.0%
10. DATABASES 1.0%
11. All others 14.5%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)