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The time now is 28.03.2024 - 15:47


Pomaly UPLOAD na FTP

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JohnSK
Post subject: Pomaly UPLOAD na FTP  PostPosted: 19.06.2006 - 13:44 #36821
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Joined: Nov 16, 2004
Posts: 210

Zdravim,

mam PC (Celeron 2.5GHz, 512MB RAM, i865 chipset, on-board LAN) na ktorom bezi Mikrotik. Je to zatial len napojene priamo cez kabel na PC.

Skusal som FTP ktore bezi na MK - DOWNLOAD je konstatnych 10MB/s, problem je vsak s UPLOAD - tam to skace od 10MB az po ~20KB/s a potom sa to zas vysplha na 10MB, spadne a tak sa to opakuje.

Autonegotiation som vypol (MK aj druhe PC), je to nastavene na full duplex, kabel je OK. Pocas UPLOADu sa vysplha CPU az na 100% a prave vtedy to zacne spomalovat. Download vytazuje CPU na cca 20%

Pomoze niekto?
 
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si
Post subject: RE: Pomaly UPLOAD na FTP  PostPosted: 19.06.2006 - 14:03 #36823
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Joined: Jan 12, 2003
Posts: 4250
Location: /dev/null
JohnSK: myslim ze to bude dane rychlostou citania a zapisu na disk
to ze citanie ide rychlejsie ako zapis ti je snad jasne
ked robis download, tak z disku citas
ked robis upload, tak nan zapisujes (to je snad tiez jasne)
a teraz preco to kolise:
mikrotik ak sa nemylim je tiez postaveny na neakom linuxe a ten standardne robi zapis na disk asynchronne a vyuziva masivne RAMku ako diskovu cache (pokial jej ma dostatok); takze ked spustis upload, tak najprv zapisuje do cache a priebezne aj na disk, ale kedze to je pomale tak sa chache postupne plni; no a ked sa naplni uz tak ze nie je kam dalej plnit tak ti to spomali a zacne prednostne cache uvolnovat Smile
aspon tolko moj nazor
 
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JohnSK
Post subject: RE: Pomaly UPLOAD na FTP  PostPosted: 19.06.2006 - 14:08 #36824
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Joined: Nov 16, 2004
Posts: 210

si, a da sa podla teba v MK nastavit asynchronny zapis? Pripadne zvacsit cache pretoze to zacne spomalovat kazdych cca 30-40MB..
 
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si
Post subject: RE: Pomaly UPLOAD na FTP  PostPosted: 19.06.2006 - 14:10 #36825
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Joined: Jan 12, 2003
Posts: 4250
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JohnSK: ja mikrotik nepouzivam, takze neviem... ale zvacsit cache sa da zvacsenim mnozstva ram (aspon zvycajne to tak funguje) a pokial chces aby to hned zapisoval a nekolisalo to, tak si musis nastavit synchronny zapis (a nie asynchronny)
a este dalsia moznost je dat tam rychlejsi disk (ale otazka je ci to mirkotik aj vie vyuzit a ci mu vobec vravia nieco take veci ako udma a pod. Smile )
 
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Robert
Post subject: RE: Pomaly UPLOAD na FTP  PostPosted: 19.06.2006 - 15:33 #36829
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Joined: Okt 19, 2003
Posts: 2339
Location: Bratislava
si: Presne tak, Robil som testy kariet Atheros na standardnych PC spod madwifi a Slackware. Priepustnost som meral pomocou iptraf. Ked som floodoval, nebol problem dosiahnut takmer 30mbit/s HD. Pri teste cez FTP sa to rozbehlo pomaly az 3MB/s a vzdy, ked bol zapis na disk a rozsvietila sa let HDD, tak to na chvilu zgeglo. Brzidila to vzdya masina, na ktoru sa zapisovalo. Podla vsetkeho disky nebezali v DMA rezime, ale toto som neriesil. Pricina spomalenia bola hned jasna. Mensie subory som prepchal rychlostou 3MB/s.
 
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