Hi All,
I'm using fuse-2.6.5 and ntfs-3g-1.417 on ARM board to mount NTFS
partitions. I find that the memory usage of ntfs-3g process was continuously
increasing when I read or write files from NTFS partitions until system out
of memory happen. Actually my board has only 32MB SDRAM, so it very easy to
suffer from this issue.
The very strange thing is with the same source code tar ball, I
uncompress it on PC with FC4, make and make install, after mount NTFS
partitions even I read write hugh files there is no such issue, the memory
usage of ntfs-3g process will not increase.
This is the steps to reproduce this issue:
Use arm-linux-gcc to compile ntfs-3g and fuse. Connect a USB harddisk to the
ARM board. Mount a fat32 partition then mount a NTFS partition with ntfs-3g.
This is the system memory useage before read / write any data.
/ # cat /proc/meminfo
MemTotal: 29432 kB
MemFree: 15640 kB
Buffers: 10492 kB
Cached: 856 kB
/ # ps
PID Uid VmSize Stat Command
678 root SW [scsi_eh_0]
679 root SW [usb-storage]
741 root 568 S ntfs-3g /dev/sda5 /mnt/sda2/
Copy a 40MB size file from FAT32 partition to NTFS partition, check the
memory usage:
PID Uid VmSize Stat Command
741 root 1664 R ntfs-3g /dev/sda5 /mnt/sda2/
745 root 300 S cp -f /mnt/sda1/2008_0~3.log /mnt/sda2/
check ntfs-3g memory usage by ps
PID Uid VmSize Stat Command
741 root 5952 R ntfs-3g /dev/sda5 /mnt/sda2/
745 root 300 S cp -f /mnt/sda1/2008_0~3.log /mnt/sda2/
check ntfs-3g memory usage by ps
PID Uid VmSize Stat Command
741 root 6456 R ntfs-3g /dev/sda5 /mnt/sda2/
745 root 300 S cp -f /mnt/sda1/2008_0~3.log /mnt/sda2/
check ntfs-3g memory usage by ps
PID Uid VmSize Stat Command
741 root 7076 R ntfs-3g /dev/sda5 /mnt/sda2/
745 root 300 S cp -f /mnt/sda1/2008_0~3.log /mnt/sda2/
check ntfs-3g memory usage by ps
PID Uid VmSize Stat Command
741 root 9496 R ntfs-3g /dev/sda5 /mnt/sda2/
745 root 300 S cp -f /mnt/sda1/2008_0~3.log /mnt/sda2/
check ntfs-3g memory usage by ps
PID Uid VmSize Stat Command
741 root 10376 R ntfs-3g /dev/sda5 /mnt/sda2/
745 root 300 S cp -f /mnt/sda1/2008_0~3.log /mnt/sda2/
check ntfs-3g memory usage by ps
PID Uid VmSize Stat Command
741 root 13300 S ntfs-3g /dev/sda5 /mnt/sda2/
754 root 320 R ps
Check system memory usage
/ # cat /proc/meminfo
MemTotal: 29432 kB
MemFree: 1096 kB
Buffers: 11480 kB
Cached: 1440 kB
If we copy this file repeatedly , the system will going to Out Of Memory
soon. If we directly copy a huge file then the system will also Out Of
Memory.
I have tested the latest fuse and ntfs-3g release there is same issue.
Please help.
Thanks.
Alec
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