On Tue, Mar 21, 2017 at 10:52:02PM +0300, Slawa Olhovchenkov wrote: S> > On Tue, Mar 21, 2017 at 10:40:34AM -0700, John Baldwin wrote: S> > J> First, this is a very good change and long overdue in divorcing the S> > J> user-facing structure for live system reporting vs the kernel structure. S> > J> S> > J> However, I realize you don't use info from netstat when debugging kernel S> > J> crash dumps, but other people _do_. It's ok if the kvm bits of netstat S> > J> require a matching kernel and thus require recompiling everytime the ABI S> > J> changes, but it is useful to have them. Please restore those. S> > S> > I have very much anticipated this comment from you, John. S> > S> > I would like to remind you, that we have had this very exact conversation S> > back when I removed kvm support from netstat/route.c. Let me search the S> > archives: S> > S> > https://lists.freebsd.org/pipermail/svn-src-head/2015-April/070480.html S> > S> > This conversation has had a continuation on IRC, which I don't archive. S> > S> > AFAIR, first I told that with all my involvement into networking stack, S> > I never ever had experienced a need to run route stats on a core. The S> > debugger were the only useful tool. And that opinion was seconded by S> > other network hackers. Then we discussed that a proper tool chould use S> > dynamic type parsing and not kvm(3). You said that future gdb has python S> > scripting and that would work fine. Meanwhile, you insisted that I restore S> > the functionality. I resisted to put kvm(3) back into netstat/route.c, and S> > instead I created a gdb script that prints exactly what 'nestat -anr -M core' S> > prints. And I committed the script just to satisfy your demand: S> > S> > tools/debugscripts/netstat-anr.gdb S> > S> > Can you please fairly answer, have you (or anyone else) ever used the S> > script during these 2 years? S> > S> > I believe, the inpcb/tcpcb printing from a core functionality has the S> > same level of real usefulness. I could create the same script for pcbs, S> > and I am afraid it is going to share fate of netstat-anr.gdb. S> S> How long run this script for core file w/ 40K TCP connections?
You tell me. When I analyze cores, I don't read through 40K TCP connections. -- Totus tuus, Glebius. _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
