[OpenAFS] low write/read performance with 1.8.x 1.9.0 client
Tue, 13 Oct 2020 15:28:42 +0200
I have seen that the first release of OpenAFS 1.9.0 is out and so I
thought that it was time to try at least 1.8.x and also 1.9 on our
production Linux x86-64 nodes, where we have used 1.6.x up to now.
Our AFS cell has file servers with OpenAFS 1.6.x and while over WAN the
performance can be rather poor, due to the well known rx latency
problem, in the LAN we have values between 70 e 80 MB/s both for read
and write. The clients are CentOS 6.x and 7.x all with OpenAFS 1.6.x.
So we have tried OpenAFS 1.8.6 clients on some production nodes (from
CentOS 7.3 to 7.8) and the performance on LAN have been poor, 15 MB/s
while the same nodes with 1.6.x clients has the normal performance.
Then we have installed a test AFS cell with OpenAFS 1.8.6 but no change
and at that point I we have checked also on user desktops using ubuntu.
1.8.4 and the performance are as low as for production nodes with 1.8.x
No improvement going to 1.9.0 (both server and clients) either.
Are we missing something important?
No special tuning in our installation.
phone +39 351 8804788
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