As it turns out, this solution has also turned out to be inadequate. For the past few months I have been experiencing the same sort of issues I originally described. Every few days I find SBCL taking up 100% of the CPU and a hundred Hunchentoot threads stalled in the web server. When a thread is killed in lisp, the database demands recovery. the BDB error file does not display anything unusual, and I have a db_deadlock and db_checkpoint command executing every minute to resolve deadlocks and checkpoint the database.
Once again this is with the release version of elephant and BDB 4.5. I suppose the most helpful thing would be a program that replicates this behavior, which I will try to get to at some point. Best, Red Daly On Thu, Oct 23, 2008 at 1:10 AM, Red Daly <[EMAIL PROTECTED]> wrote: > This appears to have resolved the problem. The server has been running for > the past several days with no database crashes. The only unusual behavior > is an occasional condition being raised that looks like this: > > > Thanks for the fix. This remaining issue does not seem to happen too much > so I can live with it. It simply belongs in the documentary record. > > Red > > > On Sat, Oct 18, 2008 at 1:27 AM, Leslie P. Polzer <[EMAIL PROTECTED] > > wrote: > >> >> > Unfortunately the standalone deadlock utility provided by BDB does not >> seem >> > to resolve this. I just tried running it with all these hung threads >> and >> > somehow the result was a database that needs recovery. db_stat also >> > indicates the number of deadlocks is 0. >> > >> > This seems to indicate that the problem is not caused by deadlocks. >> What do >> > you think? >> >> Let's make sure. After opening the store controller run >> >> (db-bdb::db-env-set-lock-detect >> (elephant::controller-environment *store-controller*) >> db-bdb::DB_LOCK_DEFAULT) >> >> and check whether this still occurs. >> >> Leslie >> >> >> _______________________________________________ >> elephant-devel site list >> elephant-devel@common-lisp.net >> http://common-lisp.net/mailman/listinfo/elephant-devel >> > >
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