On 8/04/2010 9:56 PM, Steve Polyack wrote:
> On 04/08/10 09:34, Craig Ringer wrote:
>> On 8/04/2010 8:03 PM, Phil Stracchino wrote:
>>> On 04/08/10 02:16, Craig Ringer wrote:
>>>> Bacula should probably work with Intel's hardware crypto out of the
>>>> box.
>>>> If it doesn't, most likely all that'd be required would be to call:
>>>>
>>>> ENGINE_load_builtin_engines();
>>>> ENGINE_register_all_complete();
>>> Sounds like a good idea to me. Want to write up a patch?
>> I will, at that. I even have some Via C3 machines to test it on, though
>> they're thin clients so I'll need to take one out of service for a bit
>> and chuck a disk in it.
>>
>>
> I've tried the above (loading and registering engines, specifically
> selecting various hardware engines) twice in the past and did not come
> up with anything useful. Bacula would crash after the first write to a
> EVP cipher context that was using an engine other than the default
> software one. I can dig up some more details if you like.
Ouch. That'd be really good. Do you remember finding any useful backtraces?
> Nonetheless, I would be glad to test any patches you come up with. I
> have a handful of different HW crypto cards at my disposal including Via
> C3, Hifn cards, and Broadcom cards. Unfortunately, I should note, none
> of them produce speeds comparable to a modern CPU, especially when
> operations are performed with small blocksizes - however, they are still
> useful for offloading the crypto load and freeing up the CPU.
Yep. The added instructions on the new Intel chips should make a dent
though :-)
--
Craig Ringer
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