Le Mon, 20 Jan 2014 18:59:02 -0200, Eduardo Meyer <[email protected]> a écrit :
> hello, > > I am doing some basic testings on the above mentioned scenario and I > am stuck on some limits which I consider to be very low: I cannot get > more than 27Kpps and 200Mbit/s routing performance without starting > to loose packets. > ... > All 6 network cards are Intel 82571EB which support MSI-X and should, > in theory support IRQ balance. MSI are disabled on this chipset since OpenBSD 5.2... You can try to renabled MSI in em(4), here this helps a lot (on amd64). Check the thread "(5.3) load problem on em(4) MSI / interrupt ?" on misc@ https://www.mail-archive.com/[email protected]/msg123743.html Regards, patch on 5.3: --- /usr/src/sys/dev/pci/if_em.c.orig Tue Oct 1 14:45:36 2013 +++ /usr/src/sys/dev/pci/if_em.c Tue Oct 1 14:48:52 2013 @@ -337,7 +337,7 @@ * Only use MSI on the newer PCIe parts, with the exception * of 82571/82572 due to "Byte Enables 2 and 3 Are Not Set" errata */ - if (sc->hw.mac_type <= em_82572) + if (sc->hw.mac_type < em_82571) sc->osdep.em_pa.pa_flags &= ~PCI_FLAGS_MSI_ENABLED; /* Parameters (to be read from user) */
