The quickest way to find out is to configure a backup without crypto and see
how long it takes. You could also do another test with GZIP compression on/off.
---Guy
(via iPhone)
On 30 Oct 2011, at 16:23, Alex Crow <acrow AT integrafin.co DOT uk> wrote:
>
>>> If it is supported in any way, I'd be happy to know. If not, what would
>>> be the best way about getting it implemented?
>> I'd want to be pretty sure its going to help before doing this. On my
>> (somewhat aged) development machine, OpenSSL can do AES-128 CBC at 55
>> MB/s (bytes, not bits), so it doesn;t sound like crypto is necessarily
>> your bottleneck.
>>
>> Also, crypto "accelerators" rarely do in my experience.
>>
>
> Ben,
>
> CPU is:
>
> model name : Intel(R) Xeon(R) CPU E5540 @ 2.53GHz
>
> We run 4 backup threads and get 4 cores doing 100% each, still we're
> only getting the 80 Megabits.
>
> Here's the part of the bacula-fd.conf that is relevant:
>
> FileDaemon {
> Name = backup-fd
> FDport = 9102
> WorkingDirectory = /var/lib/bacula
> Pid Directory = /var/run
> Maximum Concurrent Jobs = 20
> FDAddress = 127.0.0.1
>
> PKI Signatures = Yes
> PKI Encryption = Yes
> PKI Keypair = "/etc/bacula/keys/bacula-fd.pem"
> PKI Master Key = "/etc/bacula/keys/master.cert"
> }
>
> Here's an example job spec:
>
> Job {
> Name = "ias"
> JobDefs = "Standard"
> Schedule = "With-Basejobs"
> FileSet = "ias"
> Accurate = yes
> Base = "ias-base"
> }
>
> Job {
> Name = "ias-base"
> Level = Base
> JobDefs = "Standard"
> FileSet = "ias"
> Schedule = "Update-Basejobs"
> Accurate = yes
> }
>
> FileSet {
> Name = "ias"
> Include {
> Options {
> BaseJob = pmugcs5
> Accurate = mcs5
> Verify = pin5
> signature = MD5
> compression=GZIP
> }
> File = /nas/ias
> }
> Exclude {
> File = /nas/exclude
> }
> }
>
> Storage def from bacula-dir.conf:
>
> Storage {
> Name = Tandberg
> Address = 127.0.0.1
> SDPort = 9103
> Password = "e3Ci8AxSF2ewxzX2VgaU"
> Device = Tandberg
> Autochanger = yes
> Media Type = LTO3
> Maximum Concurrent Jobs = 20
> AllowCompression = yes
> }
>
> Devices in bacula-sd.conf:
>
> Autochanger {
> Name = Tandberg
> Device = IBM0, IBM1
> Changer Device = /dev/sg6
> Changer Command = "/usr/lib64/bacula/mtx-changer %c %o %S %a %d"
> }
>
> Device {
> Name = IBM0
> Drive Index = 0
> Media Type = LTO3
> Archive Device = /dev/st0
> AutomaticMount = yes;
> AlwaysOpen = yes;
> RemovableMedia = yes;
> RandomAccess = no;
> Autochanger = yes;
> Maximum Concurrent Jobs = 2
> Spool Directory = "/opt/spool/ibm0"
> }
>
> Device {
> Name = IBM1
> Drive Index = 1
> Media Type = LTO3
> Archive Device = /dev/st1
> AutomaticMount = yes;
> AlwaysOpen = yes;
> RemovableMedia = yes;
> RandomAccess = no;
> Autochanger = yes;
> Maximum Concurrent Jobs = 2
> Spool Directory = "/opt/spool/ibm1"
> }
>
> Could it be the "compression=GZIP" in the job defs that is slowing
> things down?
>
> I really should get my colleague to join this as he's the one that set
> this up.
>
> Cheers
>
> Alex
>
>
>
>
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