MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 07/01/01 through 07/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,655 9,224 11,879
Davis 6,329 880 7,209
Irvine 2,726 0 2,726
Los Angeles 44 2,073 2,117
Riverside 1,898 401 2,299
San Diego 1,680 719 2,399
San Francisco 1,209 0 1,209
Santa Barbara 877 676 1,553
Santa Cruz 1,288 504 1,792
LBL 0 407 407
LLL 0 279 279
Other - UC 160 755 915
CSL 0 596 596
CSU n/a 577 577
Other-Non UC n/a 17,134 17,134
_______ ______ _____
18,866 34,225 53,091
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,188 3,617 28,057
2-4 a.m. 947 3,532 26,818
4-6 a.m. 868 3,066 21,239
6-8 a.m. 1,927 6,375 29,830
8-10 a.m. 6,855 22,768 200,542
10-12 a.m. 10,110 34,058 352,459
12-2 p.m. 9,079 31,202 268,371
2-4 p.m. 10,545 37,456 257,000
4-6 p.m. 6,440 21,529 179,682
6-8 p.m. 2,185 6,526 98,544
8-10 p.m. 1,413 3,937 35,935
10-12 p.m. 1,534 4,120 40,941
__________ __________ __________ _________________
Total: 53,091 178,186 1,539,418
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,244 27,688 34,932
Davis 23,301 3,498 26,799
Irvine 10,291 0 10,291
Los Angeles 73 5,088 5,161
Riverside 7,688 764 8,452
San Diego 7,432 1,529 8,961
San Francisco 1,876 0 1,876
Santa Barbara 2,991 1,716 4,707
Santa Cruz 8,427 1,265 9,692
LBL 0 534 534
LLL 0 976 976
Other - UC 156 2,779 2,935
CSL 0 1,094 1,094
CSU n/a 1,974 1,974
Other-Non UC n/a 59,802 59,802
_______ ______ _____
69,479 108,707 178,186
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 59,918 202,335 262,253
Davis 144,413 18,635 163,048
Irvine 68,920 0 68,920
Los Angeles 597 42,722 43,319
Riverside 50,755 7,991 58,746
San Diego 38,464 16,802 55,266
San Francisco 14,366 0 14,366
Santa Barbara 26,756 13,240 39,996
Santa Cruz 27,730 10,753 38,483
LBL 0 5,524 5,524
LLL 0 10,968 10,968
Other - UC 2,158 18,849 21,007
CSL 0 8,447 8,447
CSU n/a 18,496 18,496
Other-Non UC n/a 730,579 730,579
_______ ______ _____
434,077 1,105,341 1,539,418
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 2.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.2
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1164
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 57.8
Retrievals per search - standard deviation 973.6
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 63.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 171,370 36.0%
DISPLAY (excluding automatic displays) 152,957 32.1%
ACFIND 28 0.0%
BROWSE 1,031 0.2%
SELECT 575 0.1%
HELP 2,768 0.6%
EXPLAIN 3,229 0.7%
SET/RESET 13,837 2.9%
SHOW 889 0.2%
AT 10,400 2.2%
ADD ON (AND, OR, AND NOT) 6,754 1.4%
LOGON or LOGOFF 84,712 17.8%
COMMENT 4 0.0%
SAVE 4,070 0.9%
USE 3,849 0.8%
OTHER 19,782 4.2%
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 27,056 15.1% 6,718 24.8% 9 79.8 747.3
AUTHOR 6,916 3.9% 1,689 24.4% 12 119.5 471.1
CORPORATE AUTH 2,061 1.2% 737 35.8% 21 696.4 4387.8
EXACT CA 35 0.0% 17 48.6% 9 921.8 2237.5
TITLE WORD 41,050 22.9% 13,048 31.8% 4 46.4 856.1
EXACT TITLE 31,427 17.5% 8,934 28.4% 2 19.5 139.9
TITLE -> TW 4,406 2.5% 1,180 26.8% 9 59.6 321.3
TITLE -> XT 5,323 3.0% 2,455 46.1% 1 10.1 81.1
SUBJECT 7,038 3.9% 2,488 35.3% 37 368.1 1692.3
EXACT SUBJECT 371 0.2% 94 25.3% 63 338.6 788.0
PERIODICAL 29,108 16.2% 5,653 19.4% 4 92.4 1133.0
EXACT PE 11,523 6.4% 1,876 16.3% 3 24.6 346.9
RPE 17 0.0% 0 0.0% 6 11.4 11.5
XRP 15 0.0% 0 0.0% 5 8.7 8.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 312 0.2% 51 16.3% 30 1103.3 14170.9
DATE 2,605 1.5% 626 24.0% 4 65.1 346.5
FORM 1,823 1.0% 465 25.5% 9 248.9 2143.3
NUMBER* 115 0.1% 67 58.3% 2 567.6 3621.9
MUSIC* 49 0.0% 25 51.0% 4 246.5 449.4
SERIES 4,237 2.4% 1,315 31.0% 3 61.5 486.1
UNIFORM TITLE 19 0.0% 10 52.6% 30 193.6 266.8
Other indexes 3,624 2.0% 1,515 41.8% 1 20.3 317.6
* 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 9,785 5.8% 2,803 28.6% 3 59.9 612.3
Single 159,065 94.2% 43,248 27.2% 4 81.7 1175.6
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 147 15.7% 22 15.0% 3 28.1 115.6
CORPORATE AUTH 5 0.5% 1 20.0% 7 8.5 8.9
EXACT CA 2 0.2% 0 0.0% 1 1.0 0.0
SUBJECT 715 76.3% 126 17.6% 47 3023.3 13120.9
EXACT SUBJECT 48 5.1% 5 10.4% 21 152.0 534.5
UNIFORM TITLE 1 0.1% 1 100% 0 0.0 0.0
SERIES 19 2.0% 4 21.1% 15 53.9 103.1
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 968 100% 163 16.8% 26 2226.3 11298.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.3%
BRIEF 66.2%
LONG 11.3%
MARC 3.8%
FIELDS 2.1%
TAG 3.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.2%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.3%
Ten most frequent errors:
1. NS command - no next screen 33.0%
2. First word of command is invalid 24.0%
3. FIND command with invalid index name 10.9%
4. DISPLAY command contains invalid word 4.4%
5. Search term missing from search command 2.6%
6. Max. # of ports to a Z39 db are in use 2.4%
7. DISPLAY command - no FIND results 1.9%
8. PS command - no previous screen 1.9%
9. KW search in database w/o KW index 1.7%
10. Valid command at an inappropriate time 1.7%
11. All others 15.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.4%
2. FIND 12.1%
3. Unrecognized term 6.2%
4. INDEXES 6.0%
5. COMMAND WORDS 5.8%
6. PASSWORDS 3.8%
7. DISPLAY 2.8%
8. DATABASES 2.6%
9. 1714 2.6%
10. LOCATE (PE DB) 1.6%
11. All others 35.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.2%
2. First word of command is invalid 13.1%
3. FIND command with invalid index name 10.6%
4. DISPLAY command - middle of >1 screen 3.4%
5. DISPLAY command-first of >1 screen 2.9%
6. NS command - no next screen 2.8%
7. FIND command retrieves >1 book 2.7%
8. DISPLAY command - last of >1 screen 2.4%
9. DISPLAY command-complete in one screen 2.2%
10. TW search with zero results 2.2%
11. All others 33.5%
Ten most frequent SHOW requests:
1. HISTORY 52.8%
2. SEARCH 10.7%
3. GLOSSARY 9.7%
4. SETTINGS 4.1%
5. DATABASE NEWS 3.1%
6. SYSTEM NEWS 1.3%
7. MAIL STATUS 1.2%
8. TIME 1.1%
9. 2292 1.0%
10. UCSF PASSWORDS 0.8%
11. All others 14.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)