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Re: CPU usage since 8.7.1
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From: Gleb Smirnoff via curl-library <curl-library_at_lists.haxx.se>
Date: Tue, 28 Oct 2025 11:11:24 -0700
On Tue, Oct 28, 2025 at 05:32:27PM +0100, Daniel Stenberg wrote:
D> On Tue, 28 Oct 2025, Gleb Smirnoff via curl-library wrote:
D>
D> > So here I am raising this question. What needs to be done to get CPU
D> > savings of 8.6.0 level and how can we help here?
D>
D> As recall things, the change that introduced the new (current) behavior was
D> done to enhance the accuracy of the rate limit logic, at the expense of
D> CPU.
D>
D> The change was pushed for by someone who argued that the increased
D> precision was valuable for them if I remember correctly.
D>
D> Can we find a way to have both ways and let the user select which? Maybe
D> for example by maybe something as silly and simple as doing
D> CURLOPT_MAX_RECV_SPEED_LARGE % 10000 and if that is non-zero, higher
D> precision is wanted.
I added Stefan to explicit Cc. Since he very recently added 24badd29f
titled "limit-rate revisited" (of course this conlicted with out patch
again), he definitely should have an opinion on how this can be solved.
Date: Tue, 28 Oct 2025 11:11:24 -0700
On Tue, Oct 28, 2025 at 05:32:27PM +0100, Daniel Stenberg wrote:
D> On Tue, 28 Oct 2025, Gleb Smirnoff via curl-library wrote:
D>
D> > So here I am raising this question. What needs to be done to get CPU
D> > savings of 8.6.0 level and how can we help here?
D>
D> As recall things, the change that introduced the new (current) behavior was
D> done to enhance the accuracy of the rate limit logic, at the expense of
D> CPU.
D>
D> The change was pushed for by someone who argued that the increased
D> precision was valuable for them if I remember correctly.
D>
D> Can we find a way to have both ways and let the user select which? Maybe
D> for example by maybe something as silly and simple as doing
D> CURLOPT_MAX_RECV_SPEED_LARGE % 10000 and if that is non-zero, higher
D> precision is wanted.
I added Stefan to explicit Cc. Since he very recently added 24badd29f
titled "limit-rate revisited" (of course this conlicted with out patch
again), he definitely should have an opinion on how this can be solved.
-- Gleb Smirnoff -- Unsubscribe: https://lists.haxx.se/mailman/listinfo/curl-library Etiquette: https://curl.se/mail/etiquette.htmlReceived on 2025-10-28