On Saturday, December 28, 2024 1:31 AM Tom Lane <t...@sss.pgh.pa.us> wrote: > > "Zhijie Hou (Fujitsu)" <houzj.f...@fujitsu.com> writes: > > On Thursday, December 26, 2024 3:50 AM Tom Lane <t...@sss.pgh.pa.us> > >> I wonder if the AV launcher and slotsync worker could be reclassified > >> as "auxiliary processes" instead of being their own weird animal. > > > It appears that the current aux processes do not run transactions as > > stated in the comments[1], so we may need to somehow release this > > restriction to achieve the goal. > > Ah, right, I'd forgotten about that restriction. I agree that removing it > wouldn't > be very reasonable. However, I still would rather avoid making the slotsync > worker be its very own special snowflake, because that offers no support for > the next person who wants to invent a new sort of specialized > transaction-capable process. > > Attached is an alternative proposal that groups the autovac launcher and > slotsync worker into a new category of "special workers" (better name > welcome). I chose to put them into the existing autovacFreeProcs freelist, > partly because the autovac launcher lives there already but mostly because I > don't want to add another freelist in a patch we need to put into v17. (As > written, your patch is an ABI break.
Right, thanks for pointing it out. The new version patch looks good to me. Best Regards, Hou zj
