From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8000 invoked by alias); 22 May 2017 08:57:56 -0000 Mailing-List: contact zsh-workers-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Workers List List-Post: List-Help: X-Seq: 41137 Received: (qmail 26453 invoked from network); 22 May 2017 08:57:56 -0000 X-Qmail-Scanner-Diagnostics: from out1-smtp.messagingengine.com by f.primenet.com.au (envelope-from , uid 7791) with qmail-scanner-2.11 (clamdscan: 0.99.2/21882. spamassassin: 3.4.1. Clear:RC:0(66.111.4.25):SA:0(-0.7/5.0):. Processed in 1.757531 secs); 22 May 2017 08:57:56 -0000 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on f.primenet.com.au X-Spam-Level: X-Spam-Status: No, score=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.1 X-Envelope-From: d.s@daniel.shahaf.name X-Qmail-Scanner-Mime-Attachments: | X-Qmail-Scanner-Zip-Files: | Received-SPF: none (ns1.primenet.com.au: domain at daniel.shahaf.name does not designate permitted sender hosts) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= daniel.shahaf.name; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=sadpNT qXOID4qubmWRNj9N4ct7rw6TkSncAHQSuxFJw=; b=Rv13/+0oNs4z0nSjLRc84n kqBeQgRUx1dKmspxu3gV79lt8i22waJLVm4XDpZk8fkSUif9xXbt3qLezedqtJ/p nVkv3/vWLCsPgQlPtFjdQNQOGQqNgSz4H5LzyCnLi9733DmSWEQjTmVBImDFYHgR Y8PWrUg76eB4oe69ejojR+fRZk4DAdI6W1h4V0YFxURVfEItWnXnc3mKGvvvWeAp skkRo8F2SUoOuFijboQrTQmdK8q4vTEk3c0VIRZwUCnHDoWxn4qjilOlntKmGTfk ArFyqNfnaiSdGctTSL12B//n9v09BKFP3v70nypRkLlkRZs+zYABcDWvF7BORqzg == DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=sadpNT qXOID4qubmWRNj9N4ct7rw6TkSncAHQSuxFJw=; b=L90WDsDIooeZT8+nmBxpl6 OBTx2M41yVEH9ilwY238XMxmD9uECeXuCCTzphj6JvXIm/SEUPhOCQaGjm8G5T2n ZH7jlv6cSCLTIRiWar0GGGArAmXVMb4fZR54MrwxrR4gg4uZTLh9oopvcbuu6RNd Z9SADId5wE+ZAHnC5/taA5OJEqkpdsshotOG+8eLkJp9xgFN0LaTOpLf9UQ9vEok D/HxHuSwSzntuvICZPmKekFaywFWdKsP4v6T7e8dJzsA4ThDgKO5VTTvJ8ByNG92 cZtLIcbxQHlIbd+CbkQT/giG6B3vhOMVhNgNfc3k3sHrGZz6q+egdL9lZ9xeji7A == X-ME-Sender: Message-Id: <1495443021.3874316.984296144.5B695DB8@webmail.messagingengine.com> From: Daniel Shahaf To: zsh-workers@zsh.org MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" X-Mailer: MessagingEngine.com Webmail Interface - ajax-a5162694 References: <170521130349.ZM4506@torch.brasslantern.com> <201705212227360937.046E4951@gateway.core.mpy.ch> <170521164322.ZM5074@torch.brasslantern.com> Subject: Re: High memory usage on // substitution in one situation, normal usage in other In-Reply-To: <170521164322.ZM5074@torch.brasslantern.com> Date: Mon, 22 May 2017 08:50:21 +0000 Bart Schaefer wrote on Sun, 21 May 2017 16:43 -0700: > The state that is being saved includes the entire tail of the string from > that point onward, so in the first example it requires approximately > 1.8MB/2*(the number of zeroes in all integers from 1 to 200000), The figure in parentheses is: % print {1..200000} | tr -dc 0 | wc -c 88894 (So we can compute the exact predicted memory use and compare it to the observed use.)