Re: Network Performance?
- Date: Sun, 08 Apr 2018 16:08:22 -0700
- From: L A Walsh <cygwin@xxxxxxxxx>
- Subject: Re: Network Performance?
Jordan Geoghegan wrote:
Thanks for the info. Would you be able to test file performance over the
network? If you could just try copying a ~1GB file or what have you via
sftp or rsync with actual writes to disk, I would be very interested to
see how the numbers change.
Here is scp and rsync, using a tar, and a 1g file filled
with zeros. Note, my env RSYNC_RSH=ssh
time scp default-nlaw.tar.7z ishtar:/tmp
default-nlaw.tar.7z 100% 62MB 83.1MB/s 00:00
0.91sec 0.04usr 0.01sys (6.65% cpu)
ssh ishtar rm /tmp/default-nlaw.tar.7z
time rsync -v default-nlaw.tar.7z ishtar:/tmp/
sent 64,588,267 bytes received 35 bytes 43,058,868.00 bytes/sec
total size is 64,572,413 speedup is 1.00
0.73sec 0.37usr 0.17sys (74.32% cpu)
time scp /tmp/1g ishtar:/tmp/
1g 100% 1014MB 72.3MB/s 00:14
15.00sec 0.04usr 0.07sys (0.81% cpu)
time rsync -v /tmp/1g ishtar:/tmp/
sent 1,063,515,721 bytes received 35 bytes 125,119,500.71 bytes/sec
total size is 1,063,256,064 speedup is 1.00
7.57sec 5.95usr 3.40sys (123.54% cpu)
CYGWIN_NT-6.1 Athenae 2.10.0(0.325/5/3) 2018-02-02 15:16 x86_64 Cygwin
I generally don't use them to transfer files over a closed
subnet as the performance is sub-optimal.
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