Linux home Server

[monsoon]

Jak rychly je ten server? Resp jaky upload/download to zvladne? Ja mam fileserver na k6-2 400Mhz, via mpv3, pci ata radic kouwell 250GB Samsung disk a download pres ftp je cca do 4MB/s. Podobne je to pres nfs. Vytizeni CPU uz je 100%.

To ti tam asi neco hnije, moje Pentium 200MHz dava pres ftp 8MB/s i s 8139 realtek sitovkou. Vedle beha ftp asi 20MB/s, P2 390MHz, windows, intel sitovka, takze na linuxu by to snad mohlo dat jeste vic.

[NeMeM9aA]

To ti tam asi neco hnije, moje Pentium 200MHz dava pres ftp 8MB/s i s 8139 realtek sitovkou. Vedle beha ftp asi 20MB/s, P2 390MHz, windows, intel sitovka, takze na linuxu by to snad mohlo dat jeste vic.

Je to dost mozny. Konkretne teda zmakne az 6.5MB/s, ale je to na "super znackove" desce acorp a na PCI mam krome sitovek a radice jeste povesenou zvukovou kartu. Ale jinak je to stabilni, takze jsem se do toho nevrtal. (uptime 84dni, nez vypli proud)

Mam tu po ruce nejake intel i 3com sitovky. Schvalne to tam skusim strcit misto stavajiciho realteka.

//edit: jinak je to 100Mbit sit, takze 20MB z toho asi nedostanu

//edit2: takze jsem vyzkouksel intel sitovku - modul e100 - rychlost pres ftp 6.93MB/s. S realtekem 8139c - modul 8139too je rychlost 6.56MB/s
Jeste jsem zkousel 3com 3c905cx-txm a 3x905b-tx - modul 3c59x - ale ty z nejakeho duvodu nejely - netusim proc, nemel jsem cas to testovat. (start slackwaru ale trval neobvykle dlouho, ifconfig vypadal ok, ale sitovka nebyla ze site ale dostupna.)
Vse na Slackwaru s jadrem 2.4.29

[Airwolf]

podivej se na hdparm, jak ti ty disky jedou - parametry t,T ti to otestuji, dale je tam i nejaky na vypis nastaveni

zkusit zmenit CPU jsi nezkousel ?

[NeMeM9aA]

  hdparm -tT /dev/hde

/dev/hde:
 Timing cached reads:   224 MB in  2.01 seconds = 111.44 MB/sec
 Timing buffered disk reads:   82 MB in  3.04 seconds =  26.97 MB/sec
root@Slackrouter:~# hdparm /dev/hde

/dev/hde:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 30401/255/63, sectors = 250059350016, start = 0

Pro srovnani jeste hodim test stejneho typu disku na ATA radici na K8T800pro/vt8237:

/dev/hda:
 Timing cached reads:   3136 MB in  2.00 seconds = 1568.24 MB/sec
 Timing buffered disk reads:  212 MB in  3.02 seconds =  70.10 MB/sec

/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     = 30401/255/63, sectors = 488397168, start = 0

Jinak ten router funguje stabilne. Routuje dostatecne "rychle" a nejsou s nim problemy, takze jsem to neresil. Fileserver nejak intenzivne nevyuzivam. Osobne bych podezrival desku a nizkou propustnost PCI.
Taky tomu nepomuze to, ze je to 250GB disk a je tam pouze jeden partition. (krome swapu samozrejme). Fs reiser.

[Airwolf]

/dev/hda1:
 Timing buffered disk reads:  64 MB in 22.06 seconds =  2.90 MB/sec

/dev/hda1:
 Timing buffer-cache reads:   128 MB in  1.80 seconds = 71.24 MB/sec
root@slackwolf:/home/airwolf# hdparm /dev/hda1

/dev/hda1:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  0 (off)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 827/16/63, sectors = 832545, start = 63

400MB disk na 366 Celeronu

Jak vidis...vliv ma dost HW. Mozna bys mohl zkusit zaexperimentovat, zda by ti pomohla zmena IO_support, readahead, ale ta brzda na 33MHz bude stale.

[NeMeM9aA]

Tak zmena parametru nepomaha. Read-ahed jde nastavit maximalne na 196, vic nelze.
Pro utechu sem jeste pastnu vysledky Maxtora 7080AT - 80MB kousek na BX chipsetu (2*600Mhz Katmai)

 
localhost ~ # hdparm -Tt /dev/hdc && hdparm /dev/hdc

/dev/hdc:
 Timing cached reads:   592 MB in  2.01 seconds = 294.45 MB/sec
 Timing buffered disk reads:    4 MB in  4.98 seconds = 822.00 kB/sec

/dev/hdc:
 multcount    =  0 (off)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  0 (off)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 990/10/17, sectors = 168300, start = 0

Na hw skutecne zalezi (stahoval jsem si z nej gamesy sveho mladi, ktere jsem kdyzi paril na 386. Je to jen tak pro zajimavost)

[Airwolf]

Docela by bylo zajimave, kdybys mohl zkusit ten radic na tom rychlem kompu, jak rychle by ta data tekla. Jestli by se tam projevilo brzdeni PCI, nebo by to bylo v zavislosti na rychlosti sbernice...