was limited to one segment under the faulty assumption of a retransmit.
Due to this the opportunity to initialize the increased congestion window
according to RFC3390 was missed.
Support for RFC3465 introduced in r187289 uncovered the bug as the ACK
to SYN/ACK no longer caused snd_cwnd increase by MSS (actually, this
increase shouldn't happen as it's explicitly forbidden by RFC3390, but
it's another issue). Snd_cwnd remains really small (1*MSS + 1) and this
causes really bad interaction with delayed acks on other side.
The variable name sc_rxmits is a bit misleading as it counts all transmits,
not just retransmits.
Submitted by: Maxim Dounin <mdounin-at-mdounin-dot-ru>
MFC after: 10 days
Xeon 5500/5600 series:
- Utilize IA32_TEMPERATURE_TARGET, a.k.a. Tj(target) in place
of Tj(max) when a sane value is available, as documented
in Intel whitepaper "CPU Monitoring With DTS/PECI"; (By sane
value we mean 70C - 100C for now);
- Print the probe results when booting verbose;
- Replace cpu_mask with cpu_stepping;
- Use CPUID_* macros instead of rolling our own.
Approved by: rpaulo
MFC after: 1 month
from the inline assembly. This allows the compiler to cache invocations of
curthread since it's value does not change within a thread context.
Submitted by: zec (i386)
MFC after: 1 week
a PMC. It was possible that we could have turned a bit on but
never cleared it.
Extend the calls to rdmsr() to all necessary functions, not
just those which previously caused a panic.
Pointed out by: jhb@
MFC after: 1 week
Fix another fallout from r208833. savectx() is used to save CPU context
for crash dump (dumppcb) and kdb (stoppcbs). For both cases, we cannot
have a valid pointer in pcb_save. This should restore the previous
behaviour.
for crash dump (dumppcb) and kdb (stoppcbs). For both cases, there cannot
have a valid pointer in pcb_save. This should restore the previous
behaviour.
So a command like
kill _HUP 1
now fails without sending SIGTERM to init.
The behaviour when kill(2) fails remains unchanged: processing continues.
This matches other implementations and POSIX and is useful for killing
multiple processes at once when some of them may already be gone.
PR: bin/40282
run. This makes the 'ctfconvert' and 'ctfmerge' programs show up during
a build when compiling a kernel, a library or a program.
Sponsored by: The FreeBSD Foundation
PR SCTP FWD-TSN's would not be sent and thus
cause a stalled connection. Also the rwnd
Calculation was also off on the receiver side for
PR-SCTP.
MFC after: 1 month
The emulation of 'ld' and 'sd' instructions only works for ABIs that support
64-bit registers and the instructions 'ldl' and 'ldr' that operate on those
registers.
Reviewed by: jmallett
