Krinkle added a comment.

  @Ladsgroup wrote:
  
  > […] The edit rate on this wiki has been going up to 1,000 edits per minute 
and has been testing our infrastructure scalability […] The edits have been 
mostly done by bots […] and bot operators want to edit in full speed when the 
infrastructure is quiet and forcing an arbitrary number […] limits bots in 
times that **the infrastructure can actually take more**.
  
  (Emphasis mine).
  
  @Ladsgroup wrote:
  
  > WDQS updater can't keep up and […] we need to keep in mind that there 
always will be a bottleneck.
  
  It sounds like there are no times where the infrastructure can just handle it 
all at the current rate. The above suggests that the current rate limit is too 
high, because we can't keep up with that rate even at normal/quiet times. Right?
  
  If we lower the rate limit, would this pattern not go away? I suppose it 
could come back if bots use their burst capacity within a single minute, or 
when there are many different/new bots starting to do the same thing. In that 
case, the global protections of `maxlag` and kick in automatically to restore 
us. Is that not good enough? Would the global rate limit behave differently in 
practice?
  
  @Ladsgroup wrote:
  
  > […] This has been oscillating like this for months:
  > F31805674: image.png <https://phabricator.wikimedia.org/F31805674>
  
  It isn't said explicitly, but it sounds the oscillating pattern is considered 
a problem. Is that right? What kinds of problems is it causing, and for 
whom/what? I can understand that regularly reaching a lag of 5s is not great, 
but it seems like an expected outcome if we set the bot maxlag to 5s. If we 
want the "situation normal" lag peaks to be lower, then we should set that 
maxlag parameter lower.

TASK DETAIL
  https://phabricator.wikimedia.org/T252091

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To: Krinkle
Cc: Krinkle, Aklapper, Jakob_WMDE, Lydia_Pintscher, WMDE-leszek, darthmon_wmde, 
Addshore, Ladsgroup, DannyS712, Nandana, kostajh, Lahi, Gq86, 
GoranSMilovanovic, RazeSoldier, QZanden, LawExplorer, elukey, _jensen, 
rosalieper, D3r1ck01, Scott_WUaS, Jonas, Izno, SBisson, Perhelion, 
Wikidata-bugs, Base, aude, GWicke, Bawolff, jayvdb, fbstj, santhosh, 
Jdforrester-WMF, Mbch331, Rxy, Jay8g, Ltrlg, bd808, Legoktm
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