Soft updates and power failure
pete at twisted.org.uk
Tue Feb 8 12:19:44 GMT 2005
> I have encountered the same problem in the past, as softupdates use a
> memory cache for performance. You can get around this by setting the
Even with the cache it still guarantees the disc is not left in
an inconsistent state doesnt it ? i.e. it only flushes the cache
in consistent chunks to the drive.
> You should note that on heavily used drives this will probably give a
> performance hit.
Sync gives a *horrible* performance hit, and I don't believe that it makes the
data any more likely to be consistent than running softupdates. Indeed
when I did some experiments it was actually worse.
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