Apache Access Log
- 30 days of logs
- from 29/11/2015 to 29/12/2015
- 120,650 cleaned hits
Workload
Access Profile
Top 10 URLs Access Profile
Failure Types
- HTTP Codes in the Access Log
| 200 |
120576 |
99.939 |
| 206 |
6 |
0.005 |
| 302 |
23 |
0.019 |
| 400 |
8 |
0.007 |
| 500 |
37 |
0.031 |
Overall Reliability and Failure Analysis
- Upper bound mean reliability using Nelson Model (Nelson, 1978)
- R = 1 - (f / n) = 99.97%
- f = total number of failures
- n = workload unit (hits)
- r = (f / n) = failure probability = 0.03%
URL (at least 1 failure) x Hits
- Number of Hits (39.63% of total hits)
- Sorted by number of hits
URL (at least 1 failure) x Number of Failures
URL (at least 1 failure) x Failure Probability
Failures on time line
Failures (red) x Hits (blue)
