From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-return-36822-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 24719 invoked by alias); 10 Oct 2015 10:54:50 -0000
Mailing-List: contact zsh-workers-help@zsh.org; run by ezmlm
Precedence: bulk
X-No-Archive: yes
List-Id: Zsh Workers List <zsh-workers.zsh.org>
List-Post: <mailto:zsh-workers@zsh.org>
List-Help: <mailto:zsh-workers-help@zsh.org>
X-Seq: 36822
Received: (qmail 23192 invoked from network); 10 Oct 2015 10:54:48 -0000
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM,
	T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:from:date:message-id:subject:to:content-type;
        bh=3l1Tw8rF5jSMjXbRQgV8kpM0cbs+AfgJWbZtkGLSE1U=;
        b=JVK1N7dzbv/3tC4AQvAd1DB9xBMo+Z6Vr3lT1vVjBqm6WU54Z5cGltNA87ZDPA+wZq
         MF9EQmlR+eGqMUPj+APECbrCubuOqK4aHO2pZRSglIXyx9FZ+180qukNm//kiW9hp+a1
         bStVMnfdM8S8vI2sTvoVQI0M0chYOGqrljzRJADKcACqJZe55jvbBegWw3xHccSviDHs
         dDv7ThxX/H72euXeeHS1h1kMTZb1K0vaeVg12Ot3F17WRtXQCexixTcwciLQI3cGyhrN
         TkZkHwpHeEJPV8/MdBt+SBN+rTz8imNu5O2pEmeb65FV/GbPI47bS0hdrbxEXuEnkjeX
         SlpQ==
X-Received: by 10.112.72.193 with SMTP id f1mr9008467lbv.12.1444474484510;
 Sat, 10 Oct 2015 03:54:44 -0700 (PDT)
MIME-Version: 1.0
From: Sebastian Gniazdowski <sgniazdowski@gmail.com>
Date: Sat, 10 Oct 2015 12:54:25 +0200
Message-ID: <CAKc7PVDAS+yud1ChCsAMMKqNF=vEPcbN51czm56veKcS3WZxyg@mail.gmail.com>
Subject: Slowdown around 5.0.5-dev-0
To: zsh-workers@zsh.org
Content-Type: text/plain; charset=UTF-8

Hello,
I was testing my scripts and saw that on 5.0.2 having 89k-elements
long is much faster than on 5.1.1-dev-0. I ran git bisect and found
the commit:

2014-01-18 23f98c3 32285: restart the fheap search in freeheap if the
current fheap arena is about to be discarded; fixes crash

I documented the behavior on video:
https://youtu.be/Crfoh05eWKQ

On good commit, the list works fast, with full possible speed, while
on bad commit moving one row up or down takes 1 second or more.

--- more details ---

The good commit can also slow down but always digs itself out of the
"crisis". The bad commit is always slow, and never digs out.


Best regards,
Sebastian Gniazdowski