Gentoo Archives: gentoo-user

From: Dale <dalek@××××××××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] [OT] HDD I/O and UI responsiveness
Date: Tue, 28 Nov 2006 23:47:14
Message-Id: 456CCA1A.4010600@exceedtech.net
In Reply to: [gentoo-user] [OT] HDD I/O and UI responsiveness by Andrew Gaydenko
1 Andrew Gaydenko wrote:
2 > Probably, it is known problem. Any massive HDD operations, such a generation of
3 > DVD structure (or even copying files from DVD to HDD - case, when stream speed
4 > is limited by DVD-drive), make desktop enviroment (KDE in my case) noticeably
5 > "clumsy". This takes place also when an operation is initiated via CLI with
6 > "nice -n 10" prefix. All drives are in UDMA mode. If I remember well, this
7 > problem was not so obvious with 2.4 kernels.
8 >
9 > I use ~x86 and IDE HDD. 'hdparm -i /dev/hda' and 'hdparm -tT /dev/hda' are below.
10 >
11 > Any thoughts/refs?
12 > _________________________________________
13 >
14 > $$ hdparm -i /dev/hda
15 >
16 > /dev/hda:
17 >
18 > Model=SAMSUNG SP1614N, FwRev=TM100-24, SerialNo=S016J10X568479
19 > Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
20 > RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
21 > BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=16
22 > CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=268435455
23 > IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
24 > PIO modes: pio0 pio1 pio2 pio3 pio4
25 > DMA modes: mdma0 mdma1 mdma2
26 > UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma3 udma4 *udma5
27 > AdvancedPM=no WriteCache=enabled
28 > Drive conforms to: ATA/ATAPI-7 T13 1532D revision 0: ATA/ATAPI-1 ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7
29 >
30 > * signifies the current active mode
31 >
32 > $$ hdparm -tT /dev/hda
33 >
34 > /dev/hda:
35 > Timing cached reads: 892 MB in 2.00 seconds = 446.02 MB/sec
36 > Timing buffered disk reads: 172 MB in 3.03 seconds = 56.77 MB/sec
37 >
38
39 I read somewhere that they are trying to 'nice' the drive usage like
40 they do the CPU. That may help if you can find it and enable it. I
41 think it is in some of the very new kernels if I read it correctly.
42 Sorry, I didn't bookmark it. < slaps hand >
43
44 I experience the same thing sometimes when I am emerging something and
45 it is copying the data over or untaring it one. My drive is about the
46 same as yours just different brand. You may not be alone in this one.
47 Misery loves company doesn't it?
48
49 Dale
50
51 :-) :-) :-)
52 --
53 gentoo-user@g.o mailing list

Replies

Subject Author
Re: [gentoo-user] [OT] HDD I/O and UI responsiveness "Boyd Stephen Smith Jr." <bss03@××××××××××.net>