| 1 |
> -----Original Message----- |
| 2 |
> From: bobwxc <bobwxc@××.com> |
| 3 |
> Sent: Friday, January 15, 2021 08:57 |
| 4 |
> To: gentoo-user@l.g.o |
| 5 |
> Subject: Re: [gentoo-user] network transfer speed |
| 6 |
> |
| 7 |
> 在 2021/1/15 下午2:56, thelma@×××××××××××.com 写道: |
| 8 |
> > On both of my systems the network card speed is showing 1000 |
| 9 |
> > cat /sys/class/net/enp4s0/speed 1000 |
| 10 |
> > |
| 11 |
> > but when I do rsync larage file I only see about: 20 to 22MB/s On my |
| 12 |
> > home network I get about 110MB/s between PC's |
| 13 |
> > |
| 14 |
> > Both PC's have SSD and the swith is Gigabit (I think). |
| 15 |
> > How to find a the bottleneck? |
| 16 |
> 1000Mbps network card's maximum theoretical speed is about 125MiB/s. |
| 17 |
> It only works in short distances. |
| 18 |
|
| 19 |
Correct but that's the line speed that you'll never reach, when you take into account Ethernet frame overhead, IP (and possibly TCP) header overhead and application ( rsync, FTP, SMB, NFS) overhead you get lower figures. In my experience 900Mbps (110MiBps) on a 1000Mbps line is more realistic for 'normal' transfers.
|
| 20 |
|
| 21 |
raffaele |
Archives