ut點set先唔會overload?

用緊ut 3.1.3, dl speed over 30M/s 就會一直食晒ram cache 直至硬碟 overload message
已set preallocate hardisk space
用緊普通7200 HDD
Pls help thanks



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用緊ut 3.1.3, dl speed over 30M/s 就會一直食晒ram cache 直至硬碟 overload message
已set preallocate  ...
darkfrank 發表於 2012-4-5 07:37 PM


你指 硬碟 overload 是不是
硬碟100% load ? 之後下載速度急跌 ?

你下載的東東很大嗎 ? 幾十G咁 ?

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試下set依個已經ok,其他唔洗搞
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你指 硬碟 overload 是不是
硬碟100% load ? 之後下載速度急跌 ?

你下載的東東很大嗎 ? 幾十G咁 ? ...
TH30 發表於 2012-4-5 19:58


是的
多數係PT下原盤 45G左右

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My setting, free from overloading.
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本帖最後由 NexusN 於 2012-4-5 22:27 編輯

In fact the red box is the key, all others aren't really helping.
The limitation is the I/O of harddisk which leads to overloading, the default size of the write size is too small, even your modified.
Mine is of 4MBs which is a more suitable.

Don't know why utorrent don't officially amend this..........this little hint took me weeks to find out and not many people know.

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本帖最後由 TH30 於 2012-4-5 21:33 編輯
是的
多數係PT下原盤 45G左右
darkfrank 發表於 2012-4-5 08:23 PM


我的經驗是,allocate時HDD其實是full load的,即是下載的東西根本沒空寫入HD,只會放入RAM cache,RAM cache填滿了,就會出現你的情況。

換言之,就是下載太快,data太多,HDD太忙,cache太少,allocate時間太長。

死症來的,只有水來土掩的方法。

上面師兄提的方法,都是用加大的cache來買多點時間,等allocate完成後HD才有空寫入下載的data 。

加大了cache還不夠的話,只有無奈地減速下載,讓cache不那麼快填滿。

這情況 在 official forum 那邊也是 hot topic 可以去參考一下。

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本帖最後由 mbitsa 於 2012-4-5 21:41 編輯

多數overload出現係新down既torrent, 因為會將佢地d file space做allocation, 之後再wipe data,
唔知係windows 做定ut, 不過係為了d之前d data安全
(我估, 如果之前個位係動作片, 你個合家興既show未down完就睇, 就可能中間出現...打架情節..XD?)

有個option係advanced度叫
diskio.no_zero: Enabling this option causes µTorrent to skip the zero-filling process for file allocation. This option works only on Windows XP or newer, and requires administrator privileges by default. However, it is possible to make this work on limited accounts by setting the "Perform volume maintenance tasks" policy appropriately in the Windows Group Policy Editor. Skipping zero-filling speeds up the file allocation process, but because the allocated files have shared read access, there is a risk that any sensitive data that may have once existed at that location in disk but isn't wiped will potentially be exposed for other applications and users to read, including those without volume maintenance privileges.


我就set大個cache, 因為我唔係用admin開ut..

如果你既overload唔係來自file allocation, 係你既io太多, 隻harddisk負荷不來, 這個只可加cache..

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本帖最後由 TH30 於 2012-4-5 21:41 編輯
In fact the red box is the key, all others aren't really helping.
There is limitation is the I/O of  ...
NexusN 發表於 2012-4-5 09:17 PM


thanks for introducing the "hidden" option .

I guess it not official (and it's deep hidden under the GUI) because it's not fail-safe for less-savvy user. The default setting of any software always put stability before performance.

I also read from the official forum, that some users expressed concerns that increasing the writing block size might risk data loss, potentially. I think it's worth doing some reading there before experimenting these settings.

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用緊ut 3.1.3, dl speed over 30M/s 就會一直食晒ram cache 直至硬碟 overload message
已set preallocate  ...
darkfrank 發表於 2012-4-5 19:37


我都有同樣問題,食哂d cache就hand

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