I recently did some work on 40Gb and 100Gb ethernet interfaces and these are a
few of the things that helped me during lnet_selftest:
* On lnet: credits set to higher than the default (e.g: 1024 or more),
peer_credits to 128 at least for network testing (it’s just 8 by default which
is goo
Thanks Jongwoo.
I have the MTU set for 9000 and also ring buffer setting set to max.
ip link set dev $primaryNICInterface mtu 9000
ethtool -G $primaryNICInterface rx 2047 tx 2047 rx-jumbo 8191
I read about changing Interrupt Coalesce, but unable to find what values
should be change
Have you tried MTU >= 9000 bytes (AKA jumbo frame) on the 25G ethernet and
the switch?
If it is set to 1500 bytes, ethernet + IP + TCP frame headers take quite
amount of packet, reducing available bandwidth for data.
Jongwoo Han
2019년 11월 28일 (목) 오전 3:44, Pinkesh Valdria 님이
작성:
> Thanks Andreas
Hi,
It seems that it still saves a lot of space to use ashift=9 on ZFS MDTs.
However, for DoM one would want the performance of ashift=12 for SSDs.
What is your thoughts?
Thanks,
Hans Henrik
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