[bind10-dev] b10-auth stops responding for several tens of seconds after receiving IXFR

[JINMEI Tatuya / 神明達哉]

At Mon, 07 Jan 2013 21:03:10 +0900,
Yoshitaka Aharen <aharen at jprs.co.jp> wrote:

> However, it takes about 4 minutes to finish zone update while BIND 9
> takes only about 1 second.

That's the expected behavior for now, because we don't support
incremental updates to in-memory data source yet.  So even after an
IXFR or dynamic update, the entire zone needs to be reloaded.

> Furthermore, b10-auth instances stop responding to queries for about 30
> seconds while zone update. I think it is strange as b10-auth utilizes a
> separate thread to (re)load zone. About 1 minute after b10-auth
> instances resume to respond, they answer updated records.

I have no idea right now, but I'd try:
- reduce the number of b10-auth instances
- check if this also happens when the zone is reloaded from a file
  (not from the SQLite3 DB)

BTW, what exactly do you mean by "About 1 minute (after)"?  You first
said it took 4 minutes to finish the update.  Did this "1 minute"
follow those 4 minutes, or was that the final 1 minute of those 4
minutes?  Did b10-auth respond to queries *while* reloading (with the
older version of zone)?

---
JINMEI, Tatuya
Internet Systems Consortium, Inc.