Re: [BackupPC-users] pooling of compressed and non-compressed backups

2007-08-21 Thread Rich Rauenzahn
> I'm curious about this as well, but would like to add to the question -- > what if I'm backing up some hosts across the internet, and I set the > compression to bzip2 -9. But local hosts on the LAN I set to gzip -4. > > I believe I read that the pool checksums are based on the uncompressed

Re: [BackupPC-users] pooling of compressed and non-compressed backups

2007-08-21 Thread Rich Rauenzahn
Rob Owens wrote: Rich Rauenzahn wrote: For example, to compress a 5,861,382 byte mp3 file with bzip2 -9 takes 3.3 seconds. That's 1,776,176 bytes/sec. Rich, I just tried bzip'ing an ogg file and found that it got slightly larger. The reason, I believe, is that formats like ogg, mp3,

Re: [BackupPC-users] pooling of compressed and non-compressed backups

2007-08-21 Thread Rob Owens
Rich Rauenzahn wrote: > For example, to compress a 5,861,382 byte mp3 file with bzip2 -9 takes > 3.3 seconds. That's 1,776,176 bytes/sec. Rich, I just tried bzip'ing an ogg file and found that it got slightly larger. The reason, I believe, is that formats like ogg, mp3, mpg, etc. are already c

Re: [BackupPC-users] pooling of compressed and non-compressed backups

2007-08-21 Thread Rich Rauenzahn
Les Mikesell wrote: > Don't you run several concurrent backups? Unless you limit it to the > number of CPUs in the server the high compression versions will still > be stealing cycles from the LAN backups. I'm backing up 5 machines. Only one is on the internet, and the amount of CPU time/sec th

Re: [BackupPC-users] pooling of compressed and non-compressed backups

2007-08-21 Thread Rich Rauenzahn
> > Compression is done on the server side after the transfer. What's the > point of using different methods? According to the docs, compressed > and uncompressed files aren't pooled but different levels are. The > only way to get compression over the wire is to add the -C option to > ssh -

Re: [BackupPC-users] pooling of compressed and non-compressed backups

2007-08-21 Thread Les Mikesell
Rich Rauenzahn wrote: > >> >> Compression is done on the server side after the transfer. What's the >> point of using different methods? According to the docs, compressed >> and uncompressed files aren't pooled but different levels are. The >> only way to get compression over the wire is to

Re: [BackupPC-users] pooling of compressed and non-compressed backups

2007-08-21 Thread Les Mikesell
Rich Rauenzahn wrote: >> If I have 2 hosts that contain common files, and compression is enabled >> on one but not the other, will these hosts' files ever get pooled? >> >> What if compression is enabled on both, but different compression levels >> are set? >> >> >> > I'm curious about this as

Re: [BackupPC-users] pooling of compressed and non-compressed backups

2007-08-21 Thread Rich Rauenzahn
Rob Owens wrote: > If I have 2 hosts that contain common files, and compression is enabled > on one but not the other, will these hosts' files ever get pooled? > > What if compression is enabled on both, but different compression levels > are set? > > Thanks > > -Rob > > > I'm curious about th

[BackupPC-users] pooling of compressed and non-compressed backups

2007-08-21 Thread Rob Owens
If I have 2 hosts that contain common files, and compression is enabled on one but not the other, will these hosts' files ever get pooled? What if compression is enabled on both, but different compression levels are set? Thanks -Rob -