Hi with the goal of improving signal-to-noise in our error logs, and also to increase my understanding of Naviserver internals, I have a few questions about various different messages we are seeing regularly in our logs.
1. [06/Nov/2023:14:58:08][77320.7f7b9a7fd640][-driver:nsssl:0-] Notice: ... sockAccept accepted 2 connections this is by far the most common entry in our logs - we see a LOT of these. Are they merely informative or indicative of some tuning action we could take? I don't see any way to disable them. I would love to remove these. 2. [06/Nov/2023:14:57:28][77320.7f7b63fff640][-conn:openacs:default:6:6292-] Notice: ns_cache create entry collision cache util_memoize key '__util_memoize_installed_p', no timeout We also see a quite a few of these, always for '__util_memoize_installed_p', and always with 'no timeout'. From looking at cache.c I see that this means that Naviserver failed to create the cache entry. I checked the 'util_memoize' cache utilization in case the cache was full, but it's quite low. What other cause could there be for this? 3. These 5 appear usually as a group: [07/Nov/2023:13:46:07][38.7f352cff9640][-conn:openacs:default:3:4088-] Notice: exiting: exceeded max connections per thread [07/Nov/2023:13:46:07][38.7f3525b84640][-driver:nsssl:0-] Notice: NsEnsureRunningConnectionThreads wantCreate 1 waiting 1 idle 0 current 2 [07/Nov/2023:13:46:07][38.7f352d7fa640][-conn:openacs:default:5:0-] Notice: start update interpreter openacs to epoch 1, concurrent 1 [07/Nov/2023:13:46:08][38.7f352d7fa640][-conn:openacs:default:5:0-] Notice: update interpreter openacs to epoch 1 done, trace none, time 0.373006 secs concurrent 1 [07/Nov/2023:13:46:08][38.7f352d7fa640][-conn:openacs:default:5:0-] Notice: thread initialized (0.388878 secs) We see these pretty regularly, over 50 per day on a local development server. "maxconnections" is set to the default value, which is 100, I believe. "maxthreads" and "minthreads" are also set to default values. What could be causing these so regularly on a system with 1 logged-in user? 4. These 3 are related to each other, I presume: [07/Nov/2023:15:36:24][38.7f3536b86640][-conn:openacs:default:28:28082-] Notice: nsdb: closing old handle in pool 'pool1' [07/Nov/2023:15:45:39][38.7f3536b86640][-conn:openacs:default:31:31287-] Notice: nsdb: closing idle handle in pool 'pool1' [07/Nov/2023:15:45:39][38.7f3536b86640][-conn:openacs:default:31:31287-] Notice: dbdrv: opening database 'nsoracle:192.168.1.1/ORACLE' These are quite frequent too. Am I correct in thinking that we can tune these with pool "maxidle" and "maxopen" params mentioned here https://naviserver.sourceforge.io/n/nsdb/files/ns_db.html ? Is there any reason not to turn off the automatic closing feature? many thanks in advance for any tips Brian 1.
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