> > Disable TCP slow start on idle connections
> > net.ipv4.tcp_slow_start_after_idle = 0
This looks like it's generically applicable and sensible?
> > Disable source routing and redirects
> > net.ipv4.conf.all.send_redirects = 0
> > net.ipv4.conf.all.accept_redirects = 0
> > net.ipv4.conf.all.ac
;> net.ipv4.conf.all.send_redirects = 0
>> net.ipv4.conf.all.accept_redirects = 0
>> net.ipv4.conf.all.accept_source_route = 0
>>
>> I added the net.core.somaxconn after this experience, since the default is
>> 128. This represents the allowed socket backlog in the
est performance for both
solutions. At the time this wasn't needed (and made little difference)
on the OSDs, but it appears that maybe TCP tuning in general is
something we need to look more closely.
echo 33554432 | sudo tee /proc/sys/net/core/rmem_default
echo 33554432 | sudo tee /proc
I stumbled across this comment in the bug tracker from Jake Young:
http://tracker.ceph.com/issues/9844
It's unrelated to the original bug, but wanted to post it here for comment
as a quick glance at this makes me think some of these tunings would be
good for users in general.
sage
"My
