Logger updates

details:
  + Lifting main header/block op logs from `trace` to `debug`
  + Set metrics update before nano-sleep (for task switch)

nimbus/sync/beacon/worker/blocks_staged.nim

@@ -290,7 +290,7 @@ proc blocksStagedImport*(
     nBlocks = qItem.data.blocks.len
     iv = BnRange.new(qItem.key, qItem.key + nBlocks.uint64 - 1)
 
-  trace info & ": import blocks ..", iv, nBlocks,
+  debug info & ": import blocks ..", iv, nBlocks,
     B=ctx.chain.baseNumber.bnStr, L=ctx.chain.latestNumber.bnStr
 
   var maxImport = iv.maxPt
@@ -319,6 +319,9 @@ proc blocksStagedImport*(
         maxImport = ctx.chain.latestNumber()
         break importLoop
 
+      # Update, so it can be followed nicely
+      ctx.updateMetrics()
+
       # Allow pseudo/async thread switch.
       try: await sleepAsync asyncThreadSwitchTimeSlot
       except CancelledError: discard
@@ -327,9 +330,6 @@ proc blocksStagedImport*(
         maxImport = ctx.chain.latestNumber()
         break importLoop
 
-      # Update, so it can be followed nicely
-      ctx.updateMetrics()
-
       # Occasionally mark the chain finalized
       if (n + 1) mod finaliserChainLengthMax == 0 or (n + 1) == nBlocks:
         let
@@ -365,7 +365,7 @@ proc blocksStagedImport*(
   # Update, so it can be followed nicely
   ctx.updateMetrics()
 
-  trace info & ": import done", iv, nBlocks, B=ctx.chain.baseNumber.bnStr,
+  debug info & ": import done", iv, nBlocks, B=ctx.chain.baseNumber.bnStr,
     L=ctx.chain.latestNumber.bnStr, F=ctx.layout.final.bnStr
   return true
 

nimbus/sync/beacon/worker/headers_staged.nim

@@ -251,7 +251,7 @@ proc headersStagedProcess*(ctx: BeaconCtxRef; info: static[string]): int =
 
     result += qItem.data.revHdrs.len # count headers
 
-  trace info & ": stashed consecutive headers",
+  debug info & ": stashed consecutive headers",
     nListsLeft=ctx.hdr.staged.len, nStashed=result
 
   if headersStagedQueueLengthLwm < ctx.hdr.staged.len: