anthropodeus
April 29th, 2009, 11:27 PM
I have a ~500GB external HDD connected to my laptop via eSATA. There are two partitions on it: a small one that is fat32 and a large one that is ext3.
files transfer to the ext3 partition at normal eSATA speeds - about 33MB/s. but the transfer speed to the fat32 partition is only around 10MB/s max, and usually slows to around 6MB/s as the transfer proceeds.
if i change the options from the ext3 partition from "relatime" (the default) to "rw,auto,user,sync" so that i can unmount it without going through root, the transfer speeds to the ext3 partition ALSO slow down to ~10MB/s.
so what is it in the "relatime" default that makes mount recognize the connection as full eSATA? and how can i make the fat32 partition transfer at full eSATA speed?
here's the relevant stuff from /etc/fstab:
# <file system> <mount point> <type> <options> <dump> <pass>
#
#External Hard Drive:
#
# /media/Archive was on /dev/sdb3 during installation.
UUID=2d840736-429e-4984-9f75-7ad1c532c9b0 /media/Archive ext3 relatime 0 2
# /media/ExternalAudio was on /dev/sdb2 during installation
UUID=49E2-61B0 /media/ExternalAudio vfat rw,noauto,user,sync,shortname=mixed,utf8 0 1
files transfer to the ext3 partition at normal eSATA speeds - about 33MB/s. but the transfer speed to the fat32 partition is only around 10MB/s max, and usually slows to around 6MB/s as the transfer proceeds.
if i change the options from the ext3 partition from "relatime" (the default) to "rw,auto,user,sync" so that i can unmount it without going through root, the transfer speeds to the ext3 partition ALSO slow down to ~10MB/s.
so what is it in the "relatime" default that makes mount recognize the connection as full eSATA? and how can i make the fat32 partition transfer at full eSATA speed?
here's the relevant stuff from /etc/fstab:
# <file system> <mount point> <type> <options> <dump> <pass>
#
#External Hard Drive:
#
# /media/Archive was on /dev/sdb3 during installation.
UUID=2d840736-429e-4984-9f75-7ad1c532c9b0 /media/Archive ext3 relatime 0 2
# /media/ExternalAudio was on /dev/sdb2 during installation
UUID=49E2-61B0 /media/ExternalAudio vfat rw,noauto,user,sync,shortname=mixed,utf8 0 1