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Re: Fewer mallocs is better, episode #47
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From: Daniel Stenberg via curl-library <curl-library_at_lists.haxx.se>
Date: Fri, 28 Jan 2022 15:00:37 +0100 (CET)
On Thu, 27 Jan 2022, Gavin Henry via curl-library wrote:
> Yes, it was strlen. My apologies. They switch to berval types:
For the fun of it I checked curl's use of strlen in a typical invoke like
shown before. "curl -Ls https://google.com/" (which includes a redirect)
Counting all uses with ltrace, also including OpenSSL etc.
It then makes around 686 calls to strlen(). The *total* size was 7826, thus
the average call is for strings less than 12 bytes long. The longest returned
value is 36 (*) The median length is 10.
Conclusion: I'm not seeing a general strlen problem in curl.
(*) = this is the longest SAN name returned in the server cert
Date: Fri, 28 Jan 2022 15:00:37 +0100 (CET)
On Thu, 27 Jan 2022, Gavin Henry via curl-library wrote:
> Yes, it was strlen. My apologies. They switch to berval types:
For the fun of it I checked curl's use of strlen in a typical invoke like
shown before. "curl -Ls https://google.com/" (which includes a redirect)
Counting all uses with ltrace, also including OpenSSL etc.
It then makes around 686 calls to strlen(). The *total* size was 7826, thus
the average call is for strings less than 12 bytes long. The longest returned
value is 36 (*) The median length is 10.
Conclusion: I'm not seeing a general strlen problem in curl.
(*) = this is the longest SAN name returned in the server cert
-- / daniel.haxx.se | Commercial curl support up to 24x7 is available! | Private help, bug fixes, support, ports, new features | https://curl.se/support.html -- Unsubscribe: https://lists.haxx.se/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.htmlReceived on 2022-01-28