From: Emre Kadıoğlu (kadiogluemre@gmail.com)
Date: Wed 09 Feb 2005 - 16:52:13 EET
Benim toplama amd Athlon XP 2600+ 1GB DDR400 7400 rpm 120+40 GB hd de
$ uname -r
2.6.10-canavar
$ uptime
16:41:21 up 30 days, 18:47, 3 users, load average: 0.29, 0.22, 0.15
$ time dd if=/dev/zero of=/dev/null bs=1024 count=100000000
100000000+0 kayıt girdi
100000000+0 kayıt çıktı
102400000000 bytes transferred in 97.499999 seconds (1050256421 bytes/sec)
real 1m37.501s
user 0m19.511s
sys 1m3.139s
böyle bir sonuç aldım belki hdparm ile debian a biraz optimizasyon
yapabilirsin istersen önce hdparm -Tt /dev/hda komutunun sonuçlarını bir
karşılaştır sorun bundan kaynaklanıyor olabilir
# hdparm /dev/hda
/dev/hda:
multcount = 0 (off)
IO_support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 40020664320, start = 0
debian:/home/emre# hdparm -tT /dev/hda
/dev/hda:
Timing cached reads: 1572 MB in 2.00 seconds = 784.55 MB/sec
Timing buffered disk reads: 164 MB in 3.00 seconds = 54.58 MB/sec
eatar@tr.net wrote:
>selamlar
>
>gentoo listelerinde gordugum basit bi komutu " time dd
>if=/dev/zero of=/dev/null bs=1024 count=100000000 "
>
>isyerimdeki debian(testing) makinede denedim.sonra ayni
>makinedeki mandrake 10.0 da denedim sonuclar kafa
>karistirdi.bunun uzerine laptop olan makinede ve server
>olarak kullandigim ibm de denedim. Debian haric hepsi
>birbirine yakindi makine konfigurasyonlari ve test
>sonuclari asagida debian da niye bu kadar farkli.bir
>performans problemi mi acaba karar veremedim.
>
>1.makine
> compaq evo-p4 1.6 - 1gb ram
> debian(testing) - kernel-2.6.10 (ck patchset ile)
>
> time dd if=/dev/zero of=/dev/null bs=1024
>count=100000000
> 100000000+0 records in
> 100000000+0 records out
> 102400000000 bytes transferred in 285.493750
>seconds (358676854 bytes/sec)
>
> real 4m45.496s
> user 2m2.344s
> sys 2m16.262s
>
> mandrake10.0 - kernel-2.6.3-4mdk
>
> 100000000+0 records in
> 100000000+0 records out
>
> 27.17user 83.22system 1:50.50elapsed 99%CPU
> (0avgtext+0avgdata 0maxresident)k0inputs+0outputs
> (0major+165minor)pagefaults 0swaps
>2.makine
> ibm e series xeon 3.06 - 1gb ram
> suse 9.1 kernel 2.6.5-7.111.5-smp
>
> 100000000+0 records in
> 100000000+0 records out
>
> real 1m16.824s
> user 0m24.936s
> sys 0m51.881s
>3.makine
> toshiba m30 pentium-M 1.6 512 ram
>
> suse 9.1
>
> bu makinenin sonucuda compaq ile hemen hemen ayn?
>
>
>nedir bu olay ?
>
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>
>
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