Gentoo Archives: gentoo-user

From: Andrew Gaydenko <a@××××××××.com>
To: gentoo-user@l.g.o
Subject: [gentoo-user] [OT] HDD I/O and UI responsiveness
Date: Tue, 28 Nov 2006 22:22:36
Message-Id: 200611290119.02459@goldspace.net
1 Probably, it is known problem. Any massive HDD operations, such a generation of
2 DVD structure (or even copying files from DVD to HDD - case, when stream speed
3 is limited by DVD-drive), make desktop enviroment (KDE in my case) noticeably
4 "clumsy". This takes place also when an operation is initiated via CLI with
5 "nice -n 10" prefix. All drives are in UDMA mode. If I remember well, this
6 problem was not so obvious with 2.4 kernels.
7
8 I use ~x86 and IDE HDD. 'hdparm -i /dev/hda' and 'hdparm -tT /dev/hda' are below.
9
10 Any thoughts/refs?
11 _________________________________________
12
13 $$ hdparm -i /dev/hda
14
15 /dev/hda:
16
17 Model=SAMSUNG SP1614N, FwRev=TM100-24, SerialNo=S016J10X568479
18 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
19 RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
20 BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=16
21 CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=268435455
22 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
23 PIO modes: pio0 pio1 pio2 pio3 pio4
24 DMA modes: mdma0 mdma1 mdma2
25 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma3 udma4 *udma5
26 AdvancedPM=no WriteCache=enabled
27 Drive conforms to: ATA/ATAPI-7 T13 1532D revision 0: ATA/ATAPI-1 ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7
28
29 * signifies the current active mode
30
31 $$ hdparm -tT /dev/hda
32
33 /dev/hda:
34 Timing cached reads: 892 MB in 2.00 seconds = 446.02 MB/sec
35 Timing buffered disk reads: 172 MB in 3.03 seconds = 56.77 MB/sec
36 --
37 gentoo-user@g.o mailing list

Replies

Subject Author
Re: [gentoo-user] [OT] HDD I/O and UI responsiveness Dale <dalek@××××××××××.net>