Robert Watson wrote:
I would suggest making just the HZ -> 4000 change for now and see how it
goes.
OK, I will try testing HZ=4000 tomorrow morning, although I'm pretty
sure there still will be some drops.
Can someone please say how to increase the "ifnet transmit queue sizes"?
Unfortunately, I fear that this is driver-specific, and in the case of
bce requires a recompile. In the driver init code in if_bce, the
following code appears:
ifp->if_snd.ifq_drv_maxlen = USABLE_TX_BD;
IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
IFQ_SET_READY(&ifp->if_snd);
Which evaluates to a architecture-specific value due to varying
pagesize. You might just try forcing it to 1024.
I think I'll try this too, if HZ=4000 doesn't help, thanks a lot.
In the long run we'll switch to some high-quality 10 GiGE cards.
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