Provlhma me Collisions

[Pavlos Parissis]

Geia sas,
Apantw kai ston Ioannou kai ston Taso.
Koitaksa prwta afta pou mou eipe o Ioannou.
To kalwdio htan mia xara kai to diapistosa ws eksis:
Sindew to kalwdio se allh thesh sto patch panel kai shgkekrimena sthn thesh pou einai o 2000
server
metaferw ena arxeio 180MB kai pali eixa speed 80-130Kb
vazw kainourgio kalwdio tsekarismeno an einai ok apo to linuxbox katethian ston HUB
kai pali ta idia.
Ftiaxnw allo kalwdio kai to sindew kai afto kai me tou 2 parapanw tropous kai pali ta idia.
Etsi dokimazw afto pou eipe o tasos kai vazw:
socket options = IPTOS_LOWDELAY TCP_NODELAY SO_SNDBUF=4096 SO_RCVBUF=4096
kai pali dokimi me to idio file kai pali ta idia eidh eixa arxisei na ta pernw sthn krana.
diavazontas pali to smb.conf den kserw giati etsi mou hrthe fenete kai vazw 
 socket options = IPTOS_LOWDELAY TCP_NODELAY SO_SNDBUF=4096 SO_RCVBUF=2048
oups anevike se 400Kb  h speed:)
dokimazw kai 
 socket options = IPTOS_LOWDELAY TCP_NODELAY SO_SNDBUF=4096 SO_RCVBUF=1024
oupsssssssss anevike sta 1.3MB/secs !!
kanw diafora test me files megala kai me dir me 500-1000 files kai exw taxytita kata meso oro
1.3Mb
oi diakimansois htan anamesa sta 500 kai 1.5MB.
an evaza 512 den eida diafora.
Kata thn diarkeia ton test eida pws oso mikrotero SO_RCVBUF eixa toso ta collisions meionontousan
me 1024 ta collisions htan poli aera kai logika.
Wraia lew kati kaname pame twra na doume ti sto kalo einai afto SO_RCVBUF
sto man den lei tipota kai exw apo ta arxika katalavenw oti einai to receive buffer, to SO mallon
einai kati sto stil samba options.
sto man lei na dw to man setsocketopt alla exw den to exw afto to man kai etsi paw sto
linuxdocs.org alla oute ekei to vrika.
To search pou ekana den edwse manuals alla kati howtos gia IP.
Etsi emeina me thn aporia giati meionontas to buffer eixa kalytera taxitita kai elaxista
collisions.
Iparxei kapoio site 'h kanena howto 'h telos pantos kati sxetiko?
Ta 1.3Mbs pou exw einai se logika plaisia gia ena ethernet diktio 100MBs kai TCP/IP?

Efxaristo gai to reply to Ioannou kai ton taso
Pavlos



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I love having the feeling of being in control
while i have the sensation of speed

The surfer of life
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