The statistics module automatically creates a directory tree,
structured according to years, months and days. Once per hour,
a total.raw file is produced underneath
the active year,
month and day directories, containing the
sum over all pools and storage classes of the corresponding
time interval. A days
directory contains detailed statistics per hour and for the
whole day.
/<StatBase>/YYYY/total.raw
/<StatBase>/YYYY/MM/total.raw
/<StatBase>/YYYY/MM/DD/total.raw
/<StatBase>/YYYY/MM/DD/YYYY-MM-DD-day.raw
/<StatBase>/YYYY/MM/DD/YYYY-MM-DD-HH.raw
Format of YYYY-MM-DD-HH.raw or
YYYY-MM-DD-day.raw files.
Table 27.1. File Format
| Column Number | Column Description |
|---|---|
| 0 | Pool Name |
| 1 | Storage Class |
| 2 | Bytes stored on this pool for this storage class at beginning of day |
| 3 | Number of files stored on this pool for this storage class at beginning of day |
| 4 | Bytes stored on this pool for this storage class at this hour or end of day |
| 5 | Number of files stored on this pool for this storage class at this hour or end of day |
| 6 | Total Number of transfers (in and out, dCache-client) |
| 7 | Total Number of restores (HSM to dCache) |
| 8 | Total Number of stores (dCache to HSM) |
| 9 | Total Number errors |
| 10 | Total Number of bytes transferred into dCache (from clients) |
| 11 | Total Number of bytes transferred out of dCache (to clients) |
| 12 | Total Number of tranferred from HSM to dCache |
| 13 | Total Number of tranferred from dCache to HSM |
In case the HTML functionality is enabled, which is the
default, the statistics modules creates an html tree allowing to navigate
between the different statistics views. Those files populate
the same directory structure as the
xxx.raw files. The HTML root is at:
/<StatBase>/index.html
and may be accessed via the dCache HTTP services using
http://<headnode>:2288/statistics/
(Don’t forget the trailing slash)