Re: [9fans] More venti sync woes.

["Russ Cox" <rsc@swtch.com>]

dma is worth around 10x, certainly less than 50.
i agree that your venti server is taking a very long
time to come back.  i reboot mine all the time
and don't have this problem.

i am at a loss for what could be taking it so long.
it's probably not going to hurt any to stop it.
it could take forever -- maybe it's looping!

when you manage to boot in other means,
it would be nice to see what ps -a|grep venti
says.  venti sets its proc args that show up in ps -a
to tell you what each proc does.

the new venti is very careful both about the
consistency of what is stored on disk and about
recovering quickly after a disk failure
(there's not a lot to do -- just pick up the unindexed
arena entries from the arena tocs and toss them
back into the index write buffer where they were
when you restarted the system).

what you're describing could happen if you were
running a new venti (which buffers index updates
quite aggressively) and then on reboot managed
to start an old venti (which would then process the
unindexed new blocks one at a time instead of
buffering the updates, with about 3 seeks per block).

without more information i'm afraid i have no good answers.

russ