Re: Re: ?dm-crypt latency

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Michael Hampton wrote:
> My first suspicion would be that Linux can't get any other I/O off the
> disk when both kcryptd threads are tied up. It was only when one of the
> two threads appeared in top that my music started playing again. Clearly
> I have enough CPU to handle both reading and writing encrypted data at
> once (it's only a 1.2GHz Intel Core 2 Duo). So perhaps only one thread
> should be handling these sorts of sustained write operations, so that
> the other thread can fetch my music off the disk?

In kernel 2.6.24 is only one thread per crypt device processing writes.
Any chance to test it with 2.6.24?

I have some dm-crypt write congestion prevention patches, but it seems
that not needed for 2.6.24...

Milan
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