Today we decided to upgrade some custom mikrotik using supermicro mobo / E3-1230v2 xeon cpu / with (4) dual intel pro 1000 nics
this server have always been < 10 % cpu usage this MT is 24/7 with 100k connections, 10k to 16k pps, 45 Mbps.
As soon as we upgraded we noticed massive packet loss!! from lan/wan and all this with 3% cpu usage. I could not test other brand of Ethernet because of the time, but I mean Intel dual PRO/1000 is like the most common used card in the world.
We downgraded to v5.25 and no problem, no packet loss.
Update: I have found no solution with Intel boards for 6.0. Same problem on non-Intel boards on a different system, same packet loss. X86 simply looses packets on interfaces on more than 10Kpps links.
The issue also affects intra-router communications such as vrrp sessions which do not work properly anymore due to packet loss and master/backup configurations just work randomly. BGP sessions disconnect frequently due to the same issue.
Not sure if this is related but…
Today my RB493G died, but luckily i have VRRP (fallback router is sitting inside ESXi VM. Also supermicro mobo (X9SCL±F) with Xeon E3-1230v2) and puchased license just couple of days ago…
Well this is all offtopic. VRRP took master role to that VM box. I noticed strange lags and ran a quick test to verify everything is OK.
Not everything, i have around 3-5% packet loss to default gw (located on VRRP interface). No loss on management IP of that router (same physical interface. Same subnet.)
(And i can confirm that there was no problem with 5.22. Shame on me, it was cracked, but it worked. Now i have legal version and it does not work. Lol)
I emulate intel e1000 on that VM.
You didn;t get the point, if you want to make a problem/bug report then you have to mail the mikrotik team since this forum isn;t for reporting issues.
if you see all mikrotik forum you can check all users posts mikrotik issues,
and share information with other users, in order to try to find a solution .