Path: csiph.com!usenet.blueworldhosting.com!feeder01.blueworldhosting.com!peer02.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!Xl.tags.giganews.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!nntp.earthlink.com!news.earthlink.com.POSTED!not-for-mail
NNTP-Posting-Date: Sun, 29 May 2016 11:42:13 -0500
From: ANTant@zimage.com (Ant)
Subject: Re: SATA->IDE emulation on IBM P4 bogs down on HD writes
Newsgroups: comp.os.linux.hardware
References: <87a8jl7htw.fsf@bogus.nodomain.nowhere> <41oe1d-dje.ln1@Telcontar.valinor> <87inxy8xtd.fsf@bogus.nodomain.nowhere> <nibu9f$eis$1@dont-email.me> <87r3clifod.fsf@bogus.nodomain.nowhere> <fj2r1d-n2m.ln1@Telcontar.valinor>
User-Agent: tin/2.2.1-20140504 ("Tober an Righ") (UNIX) (Linux/4.3.3-300.fc23.x86_64 (x86_64))
Message-ID: <o7CdnZUjII94htbKnZ2dnUU7-N-dnZ2d@earthlink.com>
Date: Sun, 29 May 2016 11:42:13 -0500
Lines: 80
X-Usenet-Provider: http://www.giganews.com
NNTP-Posting-Host: 71.103.224.66
X-Trace: sv3-FAloRS1Sd0GAh+YtkciNSoBHNbmsTP65nczgeZOwRYdolwq6wliUJTfB+5hVH5N29EHjO90jtIhrLTI!OhFWRxL3u3LLJf+FXh/1ApIima+icjs1GxKS4g4dBCVSPs2KWelxkVgQgwR9GNeTDJi1KXUIC3Ja!riG1Vj95+0ajrIXT1vp1P6CS8PxCbkI=
X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly
X-Postfilter: 1.3.40
X-Original-Bytes: 4611
X-Received-Bytes: 4723
X-Received-Body-CRC: 3223225687
Xref: csiph.com comp.os.linux.hardware:3127

Carlos E.R. <robin_listas@invalid.es> wrote:
> On 2016-05-29 07:41, Mike Spencer wrote:

> > Capabilities:
> >     LBA, IORDY(can be disabled)
> >     Queue depth: 32
> >     Standby timer values: spec'd by Standard, no device specific minimum
> >     R/W multiple sector transfer: Max = 16  Current = 16
> >     Recommended acoustic management value: 208, current value: 0
> >     DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
> >          Cycle time: min=120ns recommended=120ns

> You are using "udma5", it seems.
> My SATA drives use "udma6", but my kernel is way more recent, too.

> I have a pentium IV machine running, with an IDE PATA drive. It uses
> udma5, with a recent kernel. I'll post most relevant output so that you
> can compare.

> Capabilities:
>         LBA, IORDY(can be disabled)
>         Standby timer values: spec'd by Vendor, no device specific minimum
>         R/W multiple sector transfer: Max = 16  Current = 16
>         Advanced power management level: 254
>         Recommended acoustic management value: 128, current value: 254
>         DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
>              Cycle time: min=120ns recommended=120ns
>         PIO: pio0 pio1 pio2 pio3 pio4
>              Cycle time: no flow control=240ns  IORDY flow control=120ns
> Commands/features:
>         Enabled Supported:
>            *    SMART feature set
>                 Security Mode feature set
>            *    Power Management feature set
>            *    Write cache
>            *    Look-ahead
>            *    Host Protected Area feature set
>            *    WRITE_BUFFER command
>            *    READ_BUFFER command
>            *    NOP cmd
>            *    DOWNLOAD_MICROCODE
>            *    Advanced Power Management feature set
>                 Power-Up In Standby feature set
>            *    SET_FEATURES required to spinup after power up
>                 Address Offset Reserved Area Boot
>                 SET_MAX security extension
>                 Automatic Acoustic Management feature set
>            *    48-bit Address feature set
>            *    Device Configuration Overlay feature set
>            *    Mandatory FLUSH_CACHE
>            *    FLUSH_CACHE_EXT
>            *    SMART error logging
>            *    SMART self-test
>            *    General Purpose Logging feature set
>            *    WRITE_{DMA|MULTIPLE}_FUA_EXT
>            *    64-bit World wide name
>            *    IDLE_IMMEDIATE with UNLOAD


> Speed test (busy machine):

> AmonLanc:~ # hdparm -tT /dev/sda

> /dev/sda:
>  Timing cached reads:   790 MB in  2.00 seconds = 394.57 MB/sec
>  Timing buffered disk reads: 132 MB in  3.00 seconds =  43.93 MB/sec
> AmonLanc:~ #


> As you can see, PATA is slow, compared to SATA (44 MB/S)

Yep, PATA is older than SATA. IIRC, PATA is basically IDE?
-- 
Quote of the Week: "Remember, ants are only waiting for you to die..." --unknown
Note: A fixed width font (Courier, Monospace, etc.) is required to see this signature correctly.
  /\___/\   Ant(Dude) @ http://antfarm.home.dhs.org (Personal Web Site)
 / /\ /\ \                 Ant's Quality Foraged Links: http://aqfl.net
| |o   o| |
   \ _ /    Please nuke ANT if replying by e-mail privately. If credit-
    ( )     ing, then please kindly use Ant nickname and AQFL URL/link.