hello i have same problem. low write speed after system sleep kernel 3.9.9
i can see it HDD SATA & USB disks to i try to make another test before sleep i make file /tmp/test ( /tmp mounted as tmpfs size=8G, i have 16G memory in my system ) dd if=/dev/zero bs=1M count=1000 of=/tmp/test ~ 3,2 GB/s cryptsetup luksFormat /tmp/test cryptsetup luksOpen /tmp/test test dd if=/dev/zero bs=1M count=1000 of=/dev/mapper/test ~ 465 GB/s good speed after sleep dd if=/dev/zero bs=1M count=1000 of=/dev/mapper/test ~ 5MB/s ooops (((( very slow but if write directly in /tmp i can see dd if=/dev/zero bs=1M count=1000 of=/tmp/test2 ~ 3,2 GB/s I can see this is not hardware problem (NOT SATA OR USB) i think is kernel BUG, i i dont have this problem on previous kernel 3.4 Best regards, Tema -- View this message in context: http://linux-kernel.2935.n7.nabble.com/Abysmal-HDD-USB-write-speed-after-sleep-on-a-UEFI-system-tp598586p681610.html Sent from the Linux Kernel mailing list archive at Nabble.com. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/