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Re: A question in sync mode

Howard Chu wrote:
Sounds like we need to do a wake_listener call after inserting the task.

I've just added this in HEAD. But now I'm wondering if using the runqueue here was the right choice; the runqueue is set up to run jobs that are intended to run on scheduled time intervals. For jobs like this where no time interval is involved and we just want it to run right away, it probably should have gone directly to thread_pool_submit.


William wrote: 
Hi,

    I am using OpenLdap 2.3.14, with sync mode i meet a question:

after the provider and consumer are synced, a client send a modify
message to the master, the master updated quickly, but not the consumer
until next message received by provider. It seems the provider 'cached'
an operation every time. The sequence is like:

    client        provider    consumer
      ---- modify 1 ---->
               do modify
      <----- OK 1 -------
          ---- any msg 2 --->
      <--- result 2 -----
               ---- modify 1--->

Should the provider modify the consumer as soon as possible ??

I traced slapd. As an overlay, in function 'syncprov_qresp', the
provider insert a task(syncprov_qtask) in the runtime list(slapd_rq),
which will run after being scheduled. The schedule position is in
function 'slapd_daemon_task' (the main loop of slapd), but the loop will
be blocked(for the 'select' function is without a timeout) until next
message.
I add a timeout value to the 'select', and the provider can refresh the
consumer soon. But it seems not a good way, is there solution for this
question ?  Thanks.






--
 -- Howard Chu
 Chief Architect, Symas Corp.  http://www.symas.com
 Director, Highland Sun        http://highlandsun.com/hyc
 OpenLDAP Core Team            http://www.openldap.org/project/