Date: Tue, 13 Aug 1996 16:36:03 -0400 From: Thomas David Rivers <ponds!rivers@dg-rtp.dg.com> To: freebsd-hackers@freefall.FreeBSD.org, lakes!rivers Subject: sio issues (silo overflows on a pentium, locked in ttywait, etc...) Message-ID: <199608132036.QAA02107@lakes>
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Ok - I know it's been some time since 2.1.5 came out; but I'm finally getting to installing it. The main reason I'm getting to this (besides the fact that I have vacation now) is that I'm dying to move up from 2.1.0 to try and fix the locked-up sio problems I'm experiencing. (Details: a 386dx-33 with an AHA1542B; any 38400 connection eventually hangs in ttywait. This is *with* the fix to the spl levels in the VM from last June.) Anyway, after tripping over the "I'm dead.." phenomena and discovering you have to have a nameserver entry, even if you're not using it (I was wondering why I was saving all that old mail...) - I'm now finally on the way to installing 2.1.5 on my Pentium 75 laptop. However, I'm rather distressed to see: sio0: 1 more silo overflow (total n) messages popping out on VTY-2. This is with a 19200 connection, the sending machine (of course, not experiencing any overflows) is a 486dx-66. The receiving machine is a Pentium 75, with 16550a uarts! This is a direct connection through a NULL modem with brand new cables, with '-h' specified on both slattach's, so rts/cts is being used... Seems to me a Pentium 75 should be able to keep up with 19200, and hopefully be able to do much better... am I the only one tripping over these sio issues? Is there some other magic to setting rts/cts that I don't know about? Is there any hope my 386dx with 16550As will be able to handle anything higher than 19200 without locking up? - Thanks - - Dave Rivers -
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