From: Ruslan Gordeev <ruslan.gordeev@rambler.ru> To: hardware@altlinux.ru Subject: [Hardware] udma-режим на одном шлейфе для двух иде-винчестеров Date: Mon, 19 Apr 2004 15:34:05 +0600 Message-ID: <20040419153405.556dd259@finoadmin.langepas.ru> (raw) Здравствуйте! Интересная история: 1. Имеем Сизиф и ядро 2.4.25-alt1 2. Имеем мамку asus p4s8x на чипсете sis648 3. На один шлейф вешаю два одинаковых винта - Maxtor Diamond Max 9, мастер-слейв. Запускаю hdparm: rlx@finoadmin> sudo hdparm -i /dev/hdd /dev/hdd: Model=Maxtor 6Y160P0, FwRev=YAR41BW0, SerialNo=Y43XRPJE Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57 BuffType=DualPortCache, BuffSize=7936kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma6 AdvancedPM=yes: disabled (255) WriteCache=enabled Drive conforms to: (null): 1 2 3 4 5 6 7 rlx@finoadmin> sudo hdparm -tT /dev/hdd /dev/hdd: Timing buffer-cache reads: 128 MB in 0.28 seconds =457.14 MB/sec Timing buffered disk reads: 64 MB in 20.61 seconds = 3.11 MB/sec Во время выполнения второго теста загрузка процессора - 100%. Интересно. ПРоверяю hdc: rlx@finoadmin> sudo hdparm -i /dev/hdc /dev/hdc: Model=Maxtor 6Y160P0, FwRev=YAR41BW0, SerialNo=Y43XRVJE Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57 BuffType=DualPortCache, BuffSize=7936kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 AdvancedPM=yes: disabled (255) WriteCache=enabled Drive conforms to: (null): 1 2 3 4 5 6 7 rlx@finoadmin> sudo hdparm -tT /dev/hdc /dev/hdc: Timing buffer-cache reads: 128 MB in 0.25 seconds =512.00 MB/sec Timing buffered disk reads: 64 MB in 1.16 seconds = 55.17 MB/sec Пробую принудительно включить dma на hdd: rlx@finoadmin> sudo hdparm -d1 /dev/hdd /dev/hdd: setting using_dma to 1 (on) using_dma = 1 (on) rlx@finoadmin> sudo hdparm -tT /dev/hdd /dev/hdd: Timing buffer-cache reads: 128 MB in 0.25 seconds =512.00 MB/sec Timing buffered disk reads: 64 MB in 1.31 seconds = 48.85 MB/sec После этого смотрю hdc rlx@finoadmin> sudo hdparm -tT /dev/hdc ~/mnt/temp /dev/hdc: Timing buffer-cache reads: 128 MB in 0.25 seconds =512.00 MB/sec Timing buffered disk reads: 64 MB in 1.16 seconds = 55.17 MB/sec Копирую большой файл на hdd - все пучком, скорость приличная, процессор не грузится. Копирую большой файл на hdc - тормоза, 100% закгрузки процессора. rlx@finoadmin> sudo hdparm -tT /dev/hdd /dev/hdd: Timing buffer-cache reads: 128 MB in 0.24 seconds =533.33 MB/sec Timing buffered disk reads: 64 MB in 20.61 seconds = 3.11 MB/sec Ровным счетом ничего не понимаю. Кто-нибудь сталкивался с подобным? -- With best regards, Rulix. ICQ: 24740791 JID: rulix@jabber.ru http://www.rulix.tk
next reply other threads:[~2004-04-19 9:34 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2004-04-19 9:34 Ruslan Gordeev [this message] 2004-04-19 9:57 ` Sergey Vlasov 2004-04-19 10:24 ` Yuri N. Sedunov 2004-04-20 8:33 ` Ruslan Gordeev 2004-04-20 14:48 ` Michael Shigorin 2004-04-20 16:35 ` Sergey S. Skulachenko 2004-04-21 7:26 ` Sergey S. Skulachenko 2004-04-20 17:12 ` Sergey Vlasov 2004-04-21 3:00 ` Ruslan Gordeev 2004-04-21 5:45 ` Michael Shigorin 2004-04-21 7:38 ` Ruslan Gordeev 2004-04-21 13:45 ` Michael Shigorin 2004-04-21 15:04 ` Sergey S. Skulachenko 2004-04-22 2:40 ` Ruslan Gordeev 2004-04-22 8:03 ` Anton Farygin 2004-04-22 9:11 ` [Hardware] предложение: тематика (was: udma-режим на одном шлейфе для двух иде-винчестеров) Michael Shigorin 2004-04-22 9:42 ` Anton Farygin 2004-04-22 11:06 ` Michael Shigorin 2004-04-20 3:16 ` [Hardware] udma-режим на одном шлейфе для двух иде-винчестеров Ruslan Gordeev 2004-04-20 5:14 ` Sergey Vlasov 2004-04-20 9:23 ` Anton Farygin 2004-04-20 8:34 ` Ruslan Gordeev
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20040419153405.556dd259@finoadmin.langepas.ru \ --to=ruslan.gordeev@rambler.ru \ --cc=hardware@altlinux.ru \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: link
ALT Linux hardware support This inbox may be cloned and mirrored by anyone: git clone --mirror http://lore.altlinux.org/hardware/0 hardware/git/0.git # If you have public-inbox 1.1+ installed, you may # initialize and index your mirror using the following commands: public-inbox-init -V2 hardware hardware/ http://lore.altlinux.org/hardware \ hardware@altlinux.ru hardware@lists.altlinux.org hardware@lists.altlinux.ru hardware@lists.altlinux.com hardware@altlinux.org public-inbox-index hardware Example config snippet for mirrors. Newsgroup available over NNTP: nntp://lore.altlinux.org/org.altlinux.lists.hardware AGPL code for this site: git clone https://public-inbox.org/public-inbox.git