Speedup the RAWX

[jfsmig]

SUMMARY

Speed-up the Golang RAWX with various techniques:

• avoid systematically closing the connections
• try to use the stack instead of the heap:
  • pass structures instead of pointers
  • remove log traces
  • avoid Printf and prefer strings.Builder
  • avoid memory copies
  • remove unnecessary calls
• reuse structures and avoid create/destroy cycles
• increase the queue to beanstalkd
• parallelize on multiple beanstalkd connections
• save syscalls when possible (pid cached)
• trim unused code

ISSUE TYPE

enhancement

COMPONENT NAME

rawx

SDS VERSION

7.0.0.0a2-pouet-pouet

[codecov-io]

Codecov Report

Merging #2017 into master will decrease coverage by 20.51%.
The diff coverage is 56.13%.

@@             Coverage Diff             @@
##           master    #2017       +/-   ##
===========================================
- Coverage   77.49%   56.98%   -20.50%     
===========================================
  Files         335      228      -107     
  Lines       67771    50358    -17413     
===========================================
- Hits        52511    28691    -23820     
- Misses      15130    21494     +6364     
- Partials      130      173       +43     

Impacted Files	Coverage Δ
rawx/buffer_pool.go	80.00% <ø> (-6.66%)	⬇️
rawx/chunkrepo.go	70.84% <ø> (ø)
rawx/conf_reader.go	75.61% <0.00%> (-5.96%)	⬇️
rawx/configuration.go	56.10% <ø> (ø)
rawx/hexa.go	87.50% <ø> (-12.50%)	⬇️
rawx/chunk_info.go	53.38% <25.31%> (-30.01%)	⬇️
rawx/logger.go	62.14% <45.24%> (-9.14%)	⬇️
rawx/handler_chunk.go	56.44% <62.75%> (-17.69%)	⬇️
rawx/rawx.go	50.00% <66.67%> (-18.75%)	⬇️
rawx/filerepo.go	63.82% <76.82%> (-2.99%)	⬇️
... and 262 more

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[murlock]

LGTM