Re: [Bacula-users] Concurrent spooling and despooling

2010-02-17 Thread Ralf Gross
Arno Lehmann schrieb: > > A better way in my opinion is to used a spool sized ring buffer in > > memory rather then a disk based spool. The consumer would only start > > after the producer had put a large set amount in it and continued until > > drained the buffer. > > Sure... those approaches

Re: [Bacula-users] Concurrent spooling and despooling

2010-02-17 Thread Arno Lehmann
Hi, 16.02.2010 21:37, Edward M. Markowski wrote: > > I thought about this reciently, after I moved my spool dir to a 1.5 GB > ramdisk, I had been using 100GB of a mirrored pair of 500GB SATA drives > my throughtput to tape went up be a little over 10Mps. > > A few thoughts, see inline.. >

Re: [Bacula-users] Concurrent spooling and despooling

2010-02-16 Thread Edward M. Markowski
I thought about this reciently, after I moved my spool dir to a 1.5 GB ramdisk, I had been using 100GB of a mirrored pair of 500GB SATA drives my throughtput to tape went up be a little over 10Mps. A few thoughts, see inline.. On Tue, 16 Feb 2010, Arno Lehmann wrote: Hi, 16.02.2010 11

Re: [Bacula-users] Concurrent spooling and despooling

2010-02-16 Thread Martin Simmons
> On Tue, 16 Feb 2010 12:30:44 +0100, Arno Lehmann said: > > Hi, > > 16.02.2010 11:50, Daniel Kamm wrote: > > That's maybe a stupid question, but I really wonder... > > > > Using Disk Spooling prior to write data to tape, heads in a sequential > > write order: > > a) write data from backup

Re: [Bacula-users] Concurrent spooling and despooling

2010-02-16 Thread Arno Lehmann
Hi, 16.02.2010 11:50, Daniel Kamm wrote: > That's maybe a stupid question, but I really wonder... > > Using Disk Spooling prior to write data to tape, heads in a sequential > write order: > a) write data from backup client to disk spool directory > b) write data from spool directory to tape > >

Re: [Bacula-users] Concurrent spooling and despooling

2010-02-16 Thread Jesper Krogh
Daniel Kamm wrote: > That's maybe a stupid question, but I really wonder... > > Using Disk Spooling prior to write data to tape, heads in a sequential > write order: > a) write data from backup client to disk spool directory > b) write data from spool directory to tape > > Why are those tasks do

[Bacula-users] Concurrent spooling and despooling

2010-02-16 Thread Daniel Kamm
That's maybe a stupid question, but I really wonder... Using Disk Spooling prior to write data to tape, heads in a sequential write order: a) write data from backup client to disk spool directory b) write data from spool directory to tape Why are those tasks done sequentially? Let's say if the