Re: (ITS#8486) Syncprov sessionlog is inefficient, kills perf

quanah@zimbra.com wrote:

--On Monday, August 29, 2016 9:16 PM +0000 quanah@openldap.org wrote:

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Full_Name: Quanah Gibson-Mount Version: 2.4.44 OS: Linux 2.6 URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (75.111.52.177)

In doing testing for ITS#8491, I encountered this problem in my lab. Any time a single replica is parsing the session log, all other operations on the server come to a complete halt. I.e., slapd does *nothing* other than handle the sessionlog query. This seems like a fatal problem.

A patch for this is available for testing in https://github.com/quanah/openldap-scratch/tree/its8486. It no longer keeps the sessionlog mutex locked for the entire time that it's playing the log.