From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from primenet.com.au (ns1.primenet.com.au [203.24.36.2]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id b82a64a8 for ; Thu, 5 Sep 2019 20:30:55 +0000 (UTC) Received: (qmail 13112 invoked by alias); 5 Sep 2019 20:30:47 -0000 Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Users List List-Post: List-Help: List-Unsubscribe: X-Seq: 24208 Received: (qmail 25638 invoked by uid 1010); 5 Sep 2019 20:30:47 -0000 X-Qmail-Scanner-Diagnostics: from mail-io1-f51.google.com by f.primenet.com.au (envelope-from , uid 7791) with qmail-scanner-2.11 (clamdscan: 0.101.2/25559. spamassassin: 3.4.2. Clear:RC:0(209.85.166.51):SA:0(-2.0/5.0):. Processed in 2.046889 secs); 05 Sep 2019 20:30:47 -0000 X-Envelope-From: pengyu.ut@gmail.com X-Qmail-Scanner-Mime-Attachments: | X-Qmail-Scanner-Zip-Files: | Received-SPF: pass (ns1.primenet.com.au: SPF record at _netblocks.google.com designates 209.85.166.51 as permitted sender) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=arySzNv2ONov/mE2s1cVKhmiCtovBu4WFSOzOTkNqqA=; b=j4ANwW+ROXpHAT/h932H3nRt1sxozg+sIgenRVM4HHHjWhra9znC+siQ5LgrpO459l zE1XvdHpt6niP2k473g7buXMMPF5PvDaV9DEtn5dcQVuB8DS0KCzFw917UfwQEyrmQVh CVivfK0YWVU3s4k14W4oh2N/yjL3te1ep33UeI3IUMyBnobTYk+4NtnItTJ7yeqCnXkA n/79GdeDVRTegYfHLOVOb1muJOsJu0LKYjIN2IF9vUE9QyVLb5Htl29WQyDzwISd2C1A fptHFk3LLclxwmiQRRr4p3c00gNRs4vlDrv0WN/5Mr4R5impzgN9stPRoPzUBntLSQKz BBKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=arySzNv2ONov/mE2s1cVKhmiCtovBu4WFSOzOTkNqqA=; b=qNdje8+aCNOnBbtBzqO8tVl6FExN8cJcr3vV+zELfa3F8mX4slSIJGt/ZXE+uxUSYM 6AQdVmN9C0aoReKVRypxg4aTL0tA3zw4v9/J1Ew040HB7MTZagQifhhvTRQdJaImM5eH YSGORTU647DL7y4Vb/HjmOGR4bK8kxT+ZJPDUqLwuEQofuXIsdI8l6XCk2QQ7ek/h1rc TKhWOGSLLK6QrBG9wyh4jJqLzg0vph1qunScAO0Mlll22tetO1x3w5RwRkSeqLB0D8uV Ru2mXcIwuxMPDcBTgaJUbfkr4z3o/jn1O9c2rBaGV6kyyAdwPp4t0XTTqO/cKMKeMuKq Ha0Q== X-Gm-Message-State: APjAAAV0TepXG8ul5iPerrV3ve30jM68OVS00ue55S7rmDGVxcRDooLB 8h7lDd4KqcFPrI+tKjCnz3z4SrmOCossTc2fINXkuzeM X-Google-Smtp-Source: APXvYqwrkKnRrjbrzi6tofZkrwB5+OSpk+gmMe40BN0xMVORaDwiyFrpeottD/0brhkhLYUYA/1s3XT8GiZAtnacMgQ= X-Received: by 2002:a6b:620b:: with SMTP id f11mr1215143iog.85.1567715412794; Thu, 05 Sep 2019 13:30:12 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: From: Peng Yu Date: Thu, 5 Sep 2019 15:30:11 -0500 Message-ID: Subject: Re: slow startup of zsh (1x slower than bash) To: Roman Perepelitsa Cc: julien.nicoulaud@gmail.com, Sebastian Gniazdowski , zsh-users Content-Type: text/plain; charset="UTF-8" > You need to pass -d to zsh to make benchmarks fair. Where is -d defined in the man page of zsh? I don't find it. > Otherwise zsh is > sourcing global configs while bash doesn't. > > time ( repeat 1000 zsh -df -c '' ) > time ( repeat 1000 bash -c '' ) > > I get 4 ms and 3 ms for zsh and bash respectively. > > Note that this number has virtually no bearing on interactive shell > startup time. Here is my runtime result. There is still about 50% startup time overhead of zsh compared to bash. This is quite significant. time ( repeat 1000 zsh -df -c '' ) ( repeat 1000; do; zsh -df -c ''; done; ) 3.01s user 6.07s system 75% cpu 12.056 total time ( repeat 1000 bash -c '' ) ( repeat 1000; do; bash -c ''; done; ) 2.16s user 2.73s system 72% cpu 6.719 total -- Regards, Peng