Lan use & cache that leads to "Disk overload" and stop of down/up load

[jcgeny]

i tried to use Vuze and utorrent to transfer big files from one pc to an other . i prefer it because because of all checks that are done and so all is made well while ftp servers or windows file sharing are far from being perfects .....

with vuze i was having the down/up load stopping quickly after few kilobytes , then i used utorrent 2.2 and it was a bit better for down/up load between pcs but it was few Mo and i saw the info in the bar saying Disk overload 100% then the shutdown .

after removing all selections in disk cache :

then all went well and the down/up load between pcs was up to 12 Mo/s .

i wonder if i can made use of the utorrent cache ? my pcs have 4 Go & 12 Go of ram if that can change size of cache

[Switeck]

uTorrent v2.2 is a 32bit Windows application and cannot use more than 2 GB of ram for EVERYTHING it does.

Try rafi's uTorrent Guide for disk cache settings: http://forum.utorrent.com/viewtopic.php?id=74820

...You might be able to use as high as 1600-1800 MB ram for uTorrent's disk cache size.

[jcgeny]

i edited settings and they are :

i see no change although utorrent.exe uses 20 Mo of ram instead of 10 before . i will tests the lan transfer when i will have finished to get back2thefuture that is 35 Go . i will do it and avatar extended so there will be 50 Go to exchange at 100 Mb/s . i ll post about it when done

[DreadWingKnight]

Be ready for uTorrent to crash with those settings.

And having the "Disable Windows' caching of disk writes/reads" unchecked isn't recommended on windows vista or 7.

[jcgeny]

utorrent is online from yesterday and i have not a problem . utorrent uses 10 Mo when its cache is disabled : so i removed 16 Mo to 2048 Mo = 2032 . by now i use adsl torrent and it uses 16-20 Mo at maximum with these settings .

i will use these settings on the 2 PCs when i ll do the lan transfers of 50 Go and see what happens .

before i switched off utorrent caching , i think i saw it using nearly 2 Go .

[jcgeny]

it was full of learning to use these torrents and share them on lan , i posted files in a zip : http://www.megaupload.com/?d=C7XJ1K21 and at http://www.mediafire.com/?el4r1ns8v8y8pwu .

first of all , i had to cut the internet access of both computers because they were disconnecting them .

then the torrent of bact2thefuture 35 Go was not functioning at all , the computer was not able to download anything despite i tried several times . as it is made of 3 big mkv , utorrent made 3 .torrent files and then the download worked .

thanks to these 3 torrents of 14.5 Go , 10 and 10.8 Go , plus the avatar extended of 15.3 Go . i found something interresting with a limit that seems to be between 14.5 and 15.3 Go .

here are the settings i used

they mostly affect the receiver computer while the sender never used more the 20 Mo of ram .

with 3 btf torrents , i had to start them one by one and at each one do a reboot before it did well . here is a capture after i added the 3 torrents and reused the created mkvs by the 35 Go

http://d.imagehost.org/0519/mem_lan_write_btf_01.jpg

download is at full speed of the 100Mb/s of the network and receiver does not use a lot of memory 21-22 Mo .

http://b.imagehost.org/0992/mem_lan_write_btf_02.jpg

then with second btf torrent , you can see that utorrent downloaded 512 Mo = as much as the cache memory , but availability is still at 1.000 and in General Pieces is still at 0 .

http://d.imagehost.org/0121/mem_lan_write_btf2_01.jpg

so i reboot pc and relaunch utorrent and start btf3 and same happened

http://d.imagehost.org/0715/mem_lan_write_btf3_01.jpg

after reboots the the torrents are well functioning like the first

http://d.imagehost.org/0235/mem_lan_write_btf3_03.jpg

http://d.imagehost.org/0109/mem_lan_write_btf4_01.jpg

and the 35 Go became all done ;']

http://b.imagehost.org/0439/mem_lan_write_btf4_02.jpg

here come the Avatar extended that was the first i tried to exchange .

it was very hard to understand where was the trouble , after few minutes utorrent was freezing , it was when it was reaching around 1.900.000 ko of ram

so i was looking at the info in taskmanager for the ram used : here 1.5 Go despite the limit is 512 Mo of cache . here i paused download

http://d.imagehost.org/0194/mem_lan_write_02.jpg

the done is at 89% , availability is at 1.804

http://b.imagehost.org/0287/mem_lan_write_03.jpg

the done is at 89% , availability is at 1.853 , the memory used by utorrent is slowly decreasing to 700.000 Ko untill it went to 20 Mo and availability at 1.89 . then i unpaused torrent and memory was doing that again untill the end

http://b.imagehost.org/0979/mem_lan_write_04.jpg

wish that will make utorrent better 8']

[Switeck]

Does it do worse if you disable windows caching? (the last 2 checkboxes in uTorrent's disk cache)

[jcgeny]

i did not tested after i found the memory trick with pause and unpause . because utorrent should have the same behavior with or without windows caching : the first attempt to do lan transfer , i saw that memory going above 1.9 Go and utorrent freezing . after reboot i disabled caching and all went fine ...

in fact i was wrong to think i found the solution because with these new settings and new testing , i had the same thing of having to reboot windows for transfer to go well .

i ll see if i found other things and redo some tests

[jcgeny]

i checked again with latest release and bittorrent 7.2 [that is made in here,if i am not wrong] . the bug seems to be coming from the fact the downloading is started before the pre-allocation of files is all-made .

as the software can not write packets that come from any part of files , it leads to crash .

there is two way to solve that : try to send file continuously from start to end or make the softwares wait full allocation of files so it can store in disorder .

i just installed linux utorrent with fedora14 , seems good . i ll check how it turns with big files