* Poor responsiveness during disk I/O
@ 2005-01-14 19:21 Shaun Jackman
2005-01-14 19:57 ` Arjan van de Ven
0 siblings, 1 reply; 5+ messages in thread
From: Shaun Jackman @ 2005-01-14 19:21 UTC (permalink / raw)
To: lkml
My system is unresponsive and nearly unusable during period of high
disk I/O. hdparm reports it's using UDMA5 (ATA100), so it looks like
everything's up and running. I have a nForce 220-D motherboard
(A7N266-VM), a new 160 GB Maxtor ATA133 drive, and an 80 wire IDE
cable. I've compiled the amd74xx driver into the kernel.
ATA100 suggests a maximum throughput of 100 MB/s. What I should I
expect to see with hdparm -t? I'm seeing 40 MB/s.
Please cc me in your reply. Thanks,
Shaun
# hdparm -t /dev/hda
/dev/hda:
Timing buffered disk reads: 132 MB in 3.05 seconds = 43.26 MB/sec
# hdparm -v /dev/hda
/dev/hda:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 19929/255/63, sectors = 163928604672, start = 0
# hdparm -i /dev/hda
/dev/hda:
Model=Maxtor 6Y160P0, FwRev=YAR41BW0, SerialNo=Y45EJ8KE
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):
* signifies the current active mode
# cat /proc/ide/amd74xx
----------AMD BusMastering IDE Configuration----------------
Driver Version: 2.13
South Bridge: 0000:00:09.0
Revision: IDE 0xc3
Highest DMA rate: UDMA100
BM-DMA base: 0xa800
PCI clock: 33.3MHz
-----------------------Primary IDE-------Secondary IDE------
Prefetch Buffer: yes yes
Post Write Buffer: yes yes
Enabled: yes yes
Simplex only: no no
Cable Type: 80w 40w
-------------------drive0----drive1----drive2----drive3-----
Transfer Mode: UDMA PIO UDMA PIO
Address Setup: 30ns 90ns 30ns 90ns
Cmd Active: 90ns 90ns 90ns 90ns
Cmd Recovery: 30ns 30ns 30ns 30ns
Data Active: 90ns 330ns 90ns 330ns
Data Recovery: 30ns 270ns 30ns 270ns
Cycle Time: 20ns 600ns 60ns 600ns
Transfer Rate: 99.9MB/s 3.3MB/s 33.3MB/s 3.3MB/s
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Poor responsiveness during disk I/O
2005-01-14 19:21 Poor responsiveness during disk I/O Shaun Jackman
@ 2005-01-14 19:57 ` Arjan van de Ven
2005-01-14 21:57 ` Shaun Jackman
0 siblings, 1 reply; 5+ messages in thread
From: Arjan van de Ven @ 2005-01-14 19:57 UTC (permalink / raw)
To: Shaun Jackman; +Cc: lkml
On Fri, 2005-01-14 at 11:21 -0800, Shaun Jackman wrote:
> My system is unresponsive and nearly unusable during period of high
> disk I/O. hdparm reports it's using UDMA5 (ATA100), so it looks like
> everything's up and running. I have a nForce 220-D motherboard
> (A7N266-VM), a new 160 GB Maxtor ATA133 drive, and an 80 wire IDE
> cable. I've compiled the amd74xx driver into the kernel.
>
> ATA100 suggests a maximum throughput of 100 MB/s. What I should I
> expect to see with hdparm -t? I'm seeing 40 MB/s.
>
> Please cc me in your reply. Thanks,
you report a problem to the kernel mailing list suggesting the kernel
does something suboptimal, but you entirely forgot to mention which
kernel you are using ;) Could you fix that ommision please?
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Poor responsiveness during disk I/O
2005-01-14 19:57 ` Arjan van de Ven
@ 2005-01-14 21:57 ` Shaun Jackman
2005-01-15 14:53 ` Jan Knutar
0 siblings, 1 reply; 5+ messages in thread
From: Shaun Jackman @ 2005-01-14 21:57 UTC (permalink / raw)
To: lkml
> you report a problem to the kernel mailing list suggesting the kernel
> does something suboptimal, but you entirely forgot to mention which
> kernel you are using ;) Could you fix that ommision please?
Sorry, not my best moment.
Linux 2.6.8.1
Here's /proc/interrupts and /proc/dma in addition to the previous
information I posted.
Cheers,
Shaun
$ cat /proc/version
Linux version 2.6.8.1 (sjackman@quince) (gcc version 3.3.4 (Debian
1:3.3.4-6sarge1)) #1 Mon Oct 4 13:42:45 PDT 2004
$ cat /proc/interrupts
CPU0
0: 498236341 XT-PIC timer
7: 791002 IO-APIC-edge parport0
8: 111803954 IO-APIC-edge rtc
9: 0 IO-APIC-level acpi
14: 4663149 IO-APIC-edge ide0
15: 25527687 IO-APIC-edge ide1
16: 1581279 IO-APIC-level ivtv0
18: 3558673 IO-APIC-level eth0
21: 3687135 IO-APIC-level ohci_hcd, ohci_hcd, NVidia nForce
NMI: 0
LOC: 498270903
ERR: 0
MIS: 4
$ cat /proc/dma
4: cascade
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Poor responsiveness during disk I/O
2005-01-14 21:57 ` Shaun Jackman
@ 2005-01-15 14:53 ` Jan Knutar
2005-01-15 18:59 ` Shaun Jackman
0 siblings, 1 reply; 5+ messages in thread
From: Jan Knutar @ 2005-01-15 14:53 UTC (permalink / raw)
To: Shaun Jackman; +Cc: lkml
On Friday 14 January 2005 23:57, Shaun Jackman wrote:
> Linux 2.6.8.1
A "vmstat 1" output during high load would be nice...
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Poor responsiveness during disk I/O
2005-01-15 14:53 ` Jan Knutar
@ 2005-01-15 18:59 ` Shaun Jackman
0 siblings, 0 replies; 5+ messages in thread
From: Shaun Jackman @ 2005-01-15 18:59 UTC (permalink / raw)
To: lkml
On Sat, 15 Jan 2005 16:53:26 +0200, Jan Knutar <jk-lkml@sci.fi> wrote:
> On Friday 14 January 2005 23:57, Shaun Jackman wrote:
> > Linux 2.6.8.1
>
> A "vmstat 1" output during high load would be nice...
Here I'm running updatedb and opening firefox, which takes about 45
seconds to open. It's running on an Athlon 2400+ XP (2.0 GHz) with 256
MB RAM (PC2100) and 256 MB swap (ATA100).
Thanks,
Shaun
$ vmstat 1
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
2 2 95216 44148 30752 20720 180 0 2176 0 1774 2384 89 11 0 0
1 2 95356 45380 28460 20844 560 180 1576 544 1576 2252 69 31 0 0
1 3 95356 44076 28520 21480 192 0 2296 72 1665 3937 90 10 0 0
1 2 95548 45292 26472 22392 0 200 1752 1536 1466 2571 91 9 0 0
2 1 95548 44340 26368 23788 0 0 2524 0 1566 3019 67 33 0 0
4 1 95648 45068 24116 24292 0 424 2232 624 1722 3502 75 25 0 0
1 2 95672 43924 23172 26696 0 36 3876 168 1651 3322 91 9 0 0
1 2 95904 45420 22360 26464 116 296 1572 532 1519 2342 94 6 0 0
1 2 96012 44412 23776 26804 48 112 2784 756 1884 3789 67 33 0 0
2 2 96216 45756 21616 26964 0 232 1180 416 1535 2823 92 8 0 0
1 2 96216 45596 22284 27588 156 0 1444 0 1471 8843 87 13 0 0
1 2 96344 44196 21392 30276 0 220 3356 440 1437 2290 94 6 0 0
1 2 97092 45148 20336 31524 184 824 2428 1436 1382 2312 68 32 0 0
1 2 97268 45540 20224 32124 260 196 2092 580 1479 2424 91 9 0 0
3 1 97452 45540 19804 32104 0 192 2372 324 1525 2766 92 8 0 0
1 3 97752 44140 18468 35512 0 320 4848 360 1494 2746 70 30 0 0
1 2 98228 45476 17712 35524 0 504 1428 888 1447 2364 90 10 0 0
1 2 98228 44412 18164 35252 0 0 1392 448 1495 2852 91 9 0 0
1 2 99076 45084 17864 35488 4 1052 2452 1532 1497 2424 91 9 0 0
2 2 99624 45364 18336 35812 16 908 1992 1016 1559 2646 65 35 0 0
1 2 100132 45420 17736 36960 4 664 2600 736 1486 2142 83 17 0 0
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
1 5 100132 44836 18256 37744 88 0 1392 0 1469 2475 80 5 0 15
1 3 100576 43940 18144 37588 676 488 1076 2252 1452 2241 88 7 0 5
1 4 100612 45284 18372 37088 0 52 836 128 1494 2381 73 27 0 0
1 2 100928 46012 19008 36296 0 380 1272 468 1561 2927 85 15 0 0
1 2 101112 46172 19108 36244 36 212 1468 276 1492 2122 93 7 0 0
1 3 101224 45668 18924 36384 56 120 1544 196 1457 2479 95 5 0 0
0 5 101484 44492 18656 35980 476 300 1408 2208 1455 2372 37 31 0 33
1 3 101484 44044 19184 36280 64 0 888 468 1482 2360 32 5 0 63
2 3 101716 44380 18476 35944 0 236 1312 484 1457 2256 93 7 0 0
1 2 101884 45692 18280 35880 32 216 1096 292 1431 2330 93 7 0 0
1 2 102276 45356 18204 35356 336 444 1208 452 1440 2191 93 7 0 0
1 2 102372 45948 18028 35320 176 96 1092 604 1377 1887 66 29 0 5
1 3 102384 44492 18124 35376 28 52 1784 64 1470 1874 77 4 0 19
2 2 102856 45556 17196 35644 80 568 1644 1640 1507 1774 93 7 0 0
1 3 103108 45164 17704 36132 44 252 1980 268 1632 2248 65 35 0 0
1 3 103228 44428 17352 36532 92 120 1668 128 1585 2236 87 13 0 0
1 3 103452 44092 17596 36440 112 228 1672 1696 1598 2256 92 8 0 0
1 6 103660 45540 16664 35644 1076 216 2536 244 1502 2689 71 29 0 0
1 2 103776 44028 16088 36244 560 128 2044 296 1461 1643 93 7 0 0
1 2 104264 45204 14808 35596 112 616 1652 876 1450 1985 91 9 0 0
1 2 104472 44196 14508 35632 32 496 640 496 1536 1663 90 10 0 0
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
2 2 104600 46492 13396 34876 432 200 1664 668 1461 2093 70 30 0 0
1 3 104664 46044 14652 34780 184 104 2608 140 1793 3130 90 10 0 0
1 2 104852 44140 14576 35284 524 244 2352 332 1529 2197 92 8 0 0
1 1 105372 46660 13256 34792 732 612 1304 2372 1544 1842 71 29 0 0
1 2 105372 44924 14568 35152 104 0 1776 0 1654 2364 94 6 0 0
1 2 105540 44476 15504 34696 100 172 1728 880 1698 2911 89 11 0 0
1 3 105520 44460 16144 34244 220 4 1840 92 1617 2390 63 37 0 0
1 11 105828 45300 14668 33528 2260 388 3416 416 1473 1859 74 20 0 6
1 7 106180 45156 13012 33976 788 604 2824 632 1520 1452 48 5 0 46
1 8 106824 45516 12460 33920 1208 776 2760 776 1504 1826 92 8 0 0
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-01-15 18:59 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2005-01-14 19:21 Poor responsiveness during disk I/O Shaun Jackman
2005-01-14 19:57 ` Arjan van de Ven
2005-01-14 21:57 ` Shaun Jackman
2005-01-15 14:53 ` Jan Knutar
2005-01-15 18:59 ` Shaun Jackman
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