From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Noam Postavsky Newsgroups: gmane.emacs.bugs Subject: bug#32452: 26.1; gnutls_try_handshake maxes out cpu retrying when server is a bit busy Date: Thu, 16 Aug 2018 08:13:40 -0400 Message-ID: <87wosqwlu3.fsf@gmail.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1534421533 9777 195.159.176.226 (16 Aug 2018 12:12:13 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 16 Aug 2018 12:12:13 +0000 (UTC) To: 32452@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Aug 16 14:12:09 2018 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fqH8K-0002QT-PO for geb-bug-gnu-emacs@m.gmane.org; Thu, 16 Aug 2018 14:12:08 +0200 Original-Received: from localhost ([::1]:55251 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqHAR-00053A-9w for geb-bug-gnu-emacs@m.gmane.org; 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[45.2.119.34]) by smtp.googlemail.com with ESMTPSA id y90-v6sm419055ita.17.2018.08.16.05.13.40 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 16 Aug 2018 05:13:41 -0700 (PDT) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:149528 Archived-At: Severity: minor Recently the debbugs.gnu.org server is slow to respond. I notice this both when opening bug reports in Firefox, and from Emacs. However, Emacs uses 100% cpu while waiting for the server. I added a message call in gnutls_try_handshake (see patch below), and got "gnutls non-fatal: Resource temporarily unavailable, try again. [190088 times]" in *Messages*. This was from doing M-x gnus-read-ephemeral-bug-group, it took 5 or 10 seconds to (eventually successfully) complete. We should have some kind of delay to avoid sending so many useless retries. --- i/src/gnutls.c +++ w/src/gnutls.c @@ -65,6 +65,7 @@ your option) any later version. static bool gnutls_global_initialized; +static char const * emacs_gnutls_strerror (int err); static void gnutls_log_function (int, const char *); static void gnutls_log_function2 (int, const char *, const char *); # ifdef HAVE_GNUTLS3 @@ -558,7 +559,9 @@ gnutls_try_handshake (struct Lisp_Process *proc) } while (ret < 0 && gnutls_error_is_fatal (ret) == 0 - && ! non_blocking); + && ! non_blocking + && (message ("gnutls non-fatal: %s", emacs_gnutls_strerror (ret)), + true)); proc->gnutls_initstage = GNUTLS_STAGE_HANDSHAKE_TRIED;