Messages in this thread | | | Date | Tue, 11 Oct 2005 21:41:04 +0200 | From | DervishD <> | Subject | Re: "sync" option with usb storage makes it real slow since 2.6.13 |
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Hi Savar :)
* Savar <savar@schuldeigen.de> dixit: > When I mount an usb stick with the option "sync" (USB 2.0) I got a > writing speed about 15 kbyte/s. Reading is ok (ca. 1 s for 2,3 MB). > It doesn't matter if trying as root or normal user. I only have to > unmount the stick and remount it without "sync" and writing is fast. > That means I write something on the stick (ok it's buffered) and > then I type "sync" as command and after 1 s it's done (LED from > usb stick turned off and data were written).
I had *exactly* the same problem. 2.6.13 honors the "sync" mount option for VFAT, that's the reason.
Even if your device has wear leveling built in, you better not use "sync" on a flash device. If you search the mailing list archives (try searching for my nick "DervishD" and "usb-storage") you can see that this issue was discussed before. I think it was a month ago, maybe a bit more.
Raúl Núñez de Arenas Coronado
-- Linux Registered User 88736 | http://www.dervishd.net http://www.pleyades.net & http://www.gotesdelluna.net It's my PC and I'll cry if I want to... - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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