Re: Idea for git-fast-import

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Shawn O. Pearce wrote:
> Michael Haggerty <mhagger@xxxxxxxxxxxx> wrote:
>> Also, is there a big cost to using "not-quite-consecutive" integers as
>> marks?  cvs2svn's CVSRevision IDs are intermingled with IDs for
>> CVSBranches and CVSTags, so the CVSRevisions alone probably only pack
>> the ID space 5%-50% full.
> 
>> In fact, if there is a big cost to "not-quite-consecutive" integers,
>> then I withdraw my request for separate mark namespaces, since I would
>> have to reallocate mark numbers anyway :-)
> 
> See above.  5% full is really bad, because you are probably going to
> allocate nearly every block in the directory, and only fill each leaf
> block at 5% full.  50% full is actually reasonable, as it means marks
> are only costing you about 2 pointers on average (8 or 16 bytes).

OK, then, never mind.  As I mentioned, it is not a big deal to have
cvs2svn generate a separate integer series for marks.  If comments are
implemented, then the debugging disadvantage is also quite minor.

>> Another thing that might help with debugging would be a "comment"
>> command, which git-fast-import should ignore.  One could put text about
>> the source of a chunk of git-fast-import stream to relate it back to the
>> front-end concepts when debugging the stream contents by hand.
> 
> This is an awesome idea, especially when combined with having a
> buffer of the last few commands that fast-import saw right before
> it crashed.  I'll see what I can do.

Thanks!

Michael
-
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Kernel Development]     [Gcc Help]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [V4L]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]     [Fedora Users]

  Powered by Linux