Mark Hindley:
> OK, I accept that this is not working properly on faster systems (than I
> have). Actually the impact on response time and throughput is not as
> great as I had previously thought either. This is my proposed solution
> -- I would be grateful if you could test that it fixes it for you. I
> have implemented a new configuration option curl_throttle with a default
> of 1 (equivalent to 1ms). You could persuade me the default should be
> 10ms :)
>
> Mark

Before I say anything let's see more timing tests:

- apt-cacher (1.4.7):

  |                 | time (s) | speed (kB/s) | CPU % (4 min. avg) |
  |-----------------+----------+--------------+--------------------|
  | can_read(0.001) |      280 |          583 |              50.43 |
  | can_read(0.01)  |      249 |          656 |               2.35 |
  |-----------------+----------+--------------+--------------------|

- apt-cacher (your patch applied):

  |                  | time (s) | speed (kB/s) | CPU % (4 min. avg) |
  |------------------+----------+--------------+--------------------|
  | curl_throttle=1  |      327 |          500 |              50.41 |
  | curl_throttle=10 |      308 |          531 |               2.31 |
  |------------------+----------+--------------+--------------------|

I think that those numbers speak for themselves:  a value of 1ms is
increasing the global warming.  So please, don't do it for me, do it for
the environment. :-)

Best regards,

alfredo



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