How to deal with log storage/rotation

[kilburn]

Beware that this can impose a performance penalty on servers with a high number of domains. Basically, after running for a full year, such a server will have 365*n_domains files in a single folder. Therefore, anything that tries to scan such a folder is going to impose a huge number of io operations to the disk.

For instance, on a server with 100 domains, this means that performing an "ls -l" inside this directory will generate 36500 io operations. Considering that a typical 7200rpm hdd can perform approximately 90iops, this means that the disk will be saturated for almost 7 full minutes. Using the past configuration, the same problem exists but it is 7 times softer (weekly logs instead of daily logs = 7 times less files).