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The transfer rate from the disks is ok, I added some options in
/etc/sysconfig/hardisk after the original install, but found they
weren't needed,<br>
<br>
<font face="Courier New, Courier, monospace">[root@ ~]# hdparm -t
/dev/hdb<br>
<br>
/dev/hdb:<br>
Timing buffered disk reads: 62 MB in 3.07 seconds = 20.17 MB/sec<br>
[root@ ~]# hdparm -t /dev/hda<br>
<br>
/dev/hda:<br>
Timing buffered disk reads: 62 MB in 3.02 seconds = 20.51 MB/sec<br>
<br>
<br>
/dev/hdb:<br>
multcount = 16 (on)<br>
IO_support = 0 (default 16-bit)<br>
unmaskirq = 0 (off)<br>
using_dma = 1 (on)<br>
keepsettings = 0 (off)<br>
readonly = 0 (off)<br>
readahead = 256 (on)<br>
geometry = 38792/16/63, sectors = 20020396032, start = 0<br>
[root@lionel ~]# hdparm /dev/hda<br>
<br>
/dev/hda:<br>
multcount = 16 (on)<br>
IO_support = 0 (default 16-bit)<br>
unmaskirq = 0 (off)<br>
using_dma = 1 (on)<br>
keepsettings = 0 (off)<br>
readonly = 0 (off)<br>
readahead = 256 (on)<br>
geometry = 38792/16/63, sectors = 20020396032, start = 0<br>
</font><br>
<br>
The controller ignores setting IO bit to 32bit , so hdparm -d1 /dev/hda
does nothing... and the disks are 20gigs not 40,they are Western
Digital WD200<br>
hdparm -i /dev/hda<br>
<br>
/<font face="Courier New, Courier, monospace">dev/hda:<br>
<br>
Model=WDC WD200EB-00CPF0, FwRev=06.04G06, SerialNo=WD-WCAAU5009049<br>
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs
FmtGapReq }<br>
RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=40<br>
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16<br>
CurCHS=17475/15/63, CurSects=16513875, LBA=yes, LBAsects=39102336<br>
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}<br>
PIO modes: pio0 pio1 pio2 pio3 pio4<br>
DMA modes: mdma0 mdma1 mdma2<br>
UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5<br>
AdvancedPM=no WriteCache=enabled<br>
Drive conforms to: device does not report version:<br>
<br>
* signifies the current active mode<br>
hdparm -i /dev/hdb<br>
<br>
/dev/hdb:<br>
<br>
Model=WDC WD200EB-00CPF0, FwRev=06.04G06, SerialNo=WD-WCAAU5108990<br>
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs
FmtGapReq }<br>
RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=40<br>
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16<br>
CurCHS=17475/15/63, CurSects=16513875, LBA=yes, LBAsects=39102336<br>
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}<br>
PIO modes: pio0 pio1 pio2 pio3 pio4<br>
DMA modes: mdma0 mdma1 mdma2<br>
UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5<br>
AdvancedPM=no WriteCache=enabled<br>
Drive conforms to: device does not report version:<br>
<br>
* signifies the current active mode</font><br>
<br>
I'm running software RAID and they are both on one IDE controller, but
this is because the installer detects the drive geometry differently
for each if they are on separate controller, which would be the best
option, but as I am doing mirroring I want the geometry the same.
Furthermore no amount of changing in the BIOS affects the detected
geometry by Anaconda. I've seen this quite a lot on Compaqs. I have
just bought a Compaq motherboard from Ebay with a 933MHz PIII for
£12.95 (= 20 bucks), to replace the PII 450 motherboard, so I guess
I'll know if it is the CPU in a day or two.<br>
<br>
Any other ideas?<br>
<br>
Here is top:<br>
<br>
<font face="Courier New, Courier, monospace">top - 23:55:32 up 3 days,
7:46, 2 users, load average: 0.05, 0.03, 0.00<br>
Tasks: 97 total, 1 running, 96 sleeping, 0 stopped, 0 zombie<br>
Cpu(s): 1.6% us, 2.3% sy, 0.0% ni, 95.8% id, 0.0% wa, 0.3% hi,
0.0% si<br>
Mem: 515708k total, 449256k used, 66452k free, 92000k buffers<br>
Swap: 1020024k total, 916k used, 1019108k free, 205364k cached<br>
<br>
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND<br>
3276 root 16 0 7528 2288 1828 S 2.6 0.4 0:01.07 sshd<br>
3466 root 17 0 3464 952 748 R 1.3 0.2 0:00.33 top<br>
1 root 16 0 2708 568 476 S 0.0 0.1 0:01.92 init<br>
2 root 34 19 0 0 0 S 0.0 0.0 0:00.05 ksoftirqd/0<br>
3 root 5 -10 0 0 0 S 0.0 0.0 0:01.37 events/0<br>
4 root 5 -10 0 0 0 S 0.0 0.0 0:00.04 khelper<br>
5 root 5 -10 0 0 0 S 0.0 0.0 0:00.03 kblockd/0<br>
6 root 15 0 0 0 0 S 0.0 0.0 0:00.00 khubd<br>
30 root 20 0 0 0 0 S 0.0 0.0 0:00.00 pdflush<br>
31 root 15 0 0 0 0 S 0.0 0.0 0:13.89 pdflush<br>
33 root 7 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0<br>
28 root 15 0 0 0 0 S 0.0 0.0 0:00.21 kapmd<br>
32 root 15 0 0 0 0 S 0.0 0.0 0:32.34 kswapd0<br>
107 root 25 0 0 0 0 S 0.0 0.0 0:00.00 kseriod<br>
207 root 15 0 0 0 0 S 0.0 0.0 0:00.00 md6_raid1<br>
209 root 15 0 0 0 0 S 0.0 0.0 0:00.72 md1_raid1<br>
211 root 15 0 0 0 0 S 0.0 0.0 0:00.01 md2_raid1<br>
213 root 15 0 0 0 0 S 0.0 0.0 0:00.01 md4_raid1<br>
215 root 15 0 0 0 0 S 0.0 0.0 0:00.40 md5_raid1<br>
217 root 15 0 0 0 0 S 0.0 0.0 0:04.02 md3_raid1<br>
218 root 15 0 0 0 0 S 0.0 0.0 0:00.00 md0_raid1<br>
219 root 15 0 0 0 0 S 0.0 0.0 0:07.55 kjournald</font><br>
<br>
Note that I put X back on the box with VNC in xinetd, since it seems to
make no difference to the box performance...<br>
<br>
P.<br>
<br>
<br>
Bryan J. Smith wrote:
<blockquote
cite="mid20051201233958.13528.qmail@web34111.mail.mud.yahoo.com"
type="cite">
<pre wrap="">Peter Farrow <a class="moz-txt-link-rfc2396E" href="mailto:peter@farrows.org"><peter@farrows.org></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">web browsing now has a high latency ... DNS is all ok ...
I note that squid uses a fair amout of CPU on the PII450
from time to time, but can't seem to get a handle on what
</pre>
</blockquote>
<pre wrap=""><!---->is
</pre>
<blockquote type="cite">
<pre wrap="">causing the delay.
</pre>
</blockquote>
<pre wrap=""><!---->
Could be differences in the disk / disk controller. Squid is
very storage intensive, although 512MiB RAM should mitigate
much of that.
Run "hdparm -i" and "hdparm" (no options) on each of your IDE
disks and check for DMA settings, and what the controller
currently set at (the asterisk next to the modes).
</pre>
</blockquote>
<br>
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