MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 04/01/01 through 04/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,302 11,589 15,891
Davis 8,232 979 9,211
Irvine 3,107 0 3,107
Los Angeles 92 2,613 2,705
Riverside 2,363 516 2,879
San Diego 1,770 804 2,574
San Francisco 1,312 0 1,312
Santa Barbara 1,288 912 2,200
Santa Cruz 1,612 873 2,485
LBL 0 377 377
LLL 0 313 313
Other - UC 209 1,151 1,360
CSL 0 552 552
CSU n/a 699 699
Other-Non UC n/a 18,478 18,478
_______ ______ _____
24,287 39,856 64,143
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,119 3,614 30,700
2-4 a.m. 813 3,151 30,914
4-6 a.m. 994 3,210 31,759
6-8 a.m. 1,961 6,101 48,601
8-10 a.m. 7,684 26,209 196,230
10-12 a.m. 11,977 38,934 302,366
12-2 p.m. 11,365 40,233 303,575
2-4 p.m. 12,637 43,295 325,268
4-6 p.m. 8,390 27,102 207,719
6-8 p.m. 3,277 9,859 84,910
8-10 p.m. 2,277 6,662 51,585
10-12 p.m. 1,649 5,044 55,416
__________ __________ __________ _________________
Total: 64,143 213,414 1,669,043
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,887 34,389 46,276
Davis 31,545 3,465 35,010
Irvine 11,478 0 11,478
Los Angeles 278 7,248 7,526
Riverside 8,338 1,194 9,532
San Diego 4,369 1,303 5,672
San Francisco 3,956 0 3,956
Santa Barbara 4,483 2,432 6,915
Santa Cruz 6,923 2,700 9,623
LBL 0 562 562
LLL 0 1,167 1,167
Other - UC 243 3,233 3,476
CSL 0 1,252 1,252
CSU n/a 3,523 3,523
Other-Non UC n/a 67,446 67,446
_______ ______ _____
83,500 129,914 213,414
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 93,770 269,757 363,527
Davis 196,586 16,500 213,086
Irvine 80,295 0 80,295
Los Angeles 2,174 60,752 62,926
Riverside 56,211 10,485 66,696
San Diego 26,868 12,066 38,934
San Francisco 24,830 0 24,830
Santa Barbara 38,647 19,661 58,308
Santa Cruz 45,083 20,921 66,004
LBL 0 7,420 7,420
LLL 0 15,045 15,045
Other - UC 1,470 24,269 25,739
CSL 0 9,052 9,052
CSU n/a 35,161 35,161
Other-Non UC n/a 602,020 602,020
_______ ______ _____
565,934 1,103,109 1,669,043
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 2.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 710:37
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 67.0
Retrievals per search - standard deviation 1086.1
Percent of searches completed with 0 results 27.2%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 61.5%
Commands entered, by type, excluding errors:
Total Percentage
FIND 206,335 35.4%
DISPLAY (excluding automatic displays) 192,666 33.0%
ACFIND 57 0.0%
BROWSE 1,384 0.2%
SELECT 941 0.2%
HELP 4,539 0.8%
EXPLAIN 4,773 0.8%
SET/RESET 16,048 2.8%
SHOW 1,426 0.2%
AT 12,464 2.1%
ADD ON (AND, OR, AND NOT) 6,949 1.2%
LOGON or LOGOFF 102,213 17.5%
COMMENT 3 0.0%
SAVE 4,382 0.8%
USE 4,541 0.8%
OTHER 24,265 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 33,068 15.2% 7,957 24.1% 10 97.6 1257.2
AUTHOR 8,111 3.7% 2,087 25.7% 14 115.5 536.2
CORPORATE AUTH 2,230 1.0% 886 39.7% 21 718.8 3783.2
EXACT CA 29 0.0% 9 31.0% 72 117.4 164.6
TITLE WORD 56,761 26.1% 16,933 29.8% 4 39.2 465.2
EXACT TITLE 31,746 14.6% 9,501 29.9% 2 22.0 264.6
TITLE -> TW 4,965 2.3% 1,184 23.8% 10 82.8 834.4
TITLE -> XT 6,096 2.8% 2,757 45.2% 1 14.5 163.8
SUBJECT 12,020 5.5% 4,368 36.3% 45 478.9 3201.3
EXACT SUBJECT 631 0.3% 137 21.7% 51 330.7 799.7
PERIODICAL 34,145 15.7% 7,302 21.4% 4 95.7 1574.5
EXACT PE 13,734 6.3% 2,284 16.6% 3 30.8 634.0
RPE 9 0.0% 1 11.1% 7 10.8 11.0
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 352 0.2% 43 12.2% 44 317.3 1651.9
DATE 2,930 1.3% 768 26.2% 4 97.3 1051.1
FORM 2,353 1.1% 537 22.8% 16 266.4 3503.4
NUMBER* 190 0.1% 64 33.7% 2 85.6 402.5
MUSIC* 192 0.1% 119 62.0% 3 247.7 769.5
SERIES 4,328 2.0% 1,383 32.0% 4 67.5 351.8
UNIFORM TITLE 62 0.0% 15 24.2% 37 111.4 200.6
Other indexes 3,416 1.6% 1,432 41.9% 1 15.9 140.3
* 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 13,570 6.7% 3,968 29.2% 3 66.9 837.8
Single 189,419 93.3% 51,669 27.3% 4 94.4 1314.3
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 147 11.4% 34 23.1% 4 52.2 128.0
CORPORATE AUTH 9 0.7% 3 33.3% 3 20.3 43.0
EXACT CA 1 0.1% 1 100% 0 0.0 0.0
SUBJECT 1,090 84.6% 256 23.5% 48 204.1 1048.1
EXACT SUBJECT 39 3.0% 10 25.6% 55 270.1 666.1
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 2 0.2% 0 0.0% 11 11.0 12.7
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,310 100% 308 23.5% 37 184.2 965.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.8%
BRIEF 66.4%
LONG 10.3%
MARC 5.1%
FIELDS 2.9%
TAG 2.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.3%
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 30.1%
2. First word of command is invalid 26.0%
3. FIND command with invalid index name 12.1%
4. DISPLAY command contains invalid word 4.6%
5. Search term missing from search command 2.6%
6. Max. # of ports to a Z39 db are in use 2.4%
7. KW search in database w/o KW index 2.0%
8. PS command - no previous screen 1.8%
9. DISPLAY command - no FIND results 1.6%
10. Valid command at an inappropriate time 1.4%
11. All others 15.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.4%
2. FIND 12.3%
3. Unrecognized term 6.6%
4. INDEXES 6.0%
5. COMMAND WORDS 5.5%
6. PASSWORDS 3.5%
7. DATABASES 2.5%
8. DISPLAY 2.5%
9. CATALOG 1.7%
10. ADD-ON SEARCH 1.7%
11. All others 33.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.5%
2. First word of command is invalid 14.8%
3. FIND command with invalid index name 10.9%
4. DISPLAY command - middle of >1 screen 3.8%
5. DISPLAY command-first of >1 screen 3.0%
6. NS command - no next screen 2.6%
7. FIND command retrieves >1 book 2.4%
8. DISPLAY command-complete in one screen 2.2%
9. F/BR with index invalid in current DB 2.2%
10. TW search with zero results 2.0%
11. All others 33.6%
Ten most frequent SHOW requests:
1. HISTORY 44.4%
2. SEARCH 13.3%
3. GLOSSARY 6.6%
4. SETTINGS 4.6%
5. DATABASE NEWS 3.2%
6. SYSTEM NEWS 2.5%
7. MAIL STATUS 2.4%
8. DATABASES 1.4%
9. MEDLINE NEWS 1.3%
10. SYSTEM5 NEWS 1.2%
11. All others 19.1%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)