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6dba29a285
freebsd-nq/sys
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Luigi Rizzo 6dba29a285 Two performance-related fixes: 
1. as reported by Alexander Fiveg, the allocator was reporting
   half of the allocated memory. Fix this by exiting from the
   loop earlier (not too critical because this code is going
   away soon).

2. following a discussion on freebsd-current
    http://lists.freebsd.org/pipermail/freebsd-current/2012-January/031144.html
   turns out that (re)loading the dmamap was expensive and not optimized.
   This operation is in the critical path when doing zero-copy forwarding
   between interfaces.
   At least on netmap and i386/amd64, the bus_dmamap_load can be
   completely bypassed if the map is NULL, so we do it.

The latter change gives an almost 3x improvement in forwarding
performance, from the previous 9.5Mpps at 2.9GHz to the current
line rate (14.2Mpps) at 1.733GHz. (this is for 64+4 byte packets,
in other configurations the PCIe bus is a bottleneck).
2012-01-13 10:21:15 +00:00
..
amd64 Add the CAM Target Layer (CTL). 2012-01-12 00:34:33 +00:00
arm Add missing options so modules build/load correctly. 2012-01-05 20:18:01 +00:00
boot Get rid of a spurious warning on the console when booting the kernel 2012-01-09 20:25:14 +00:00
bsm
cam Silence some unnecessary verbosity. 2012-01-12 22:08:33 +00:00
cddl - Allow to change vfs.zfs.arc_meta_limit at runtime. 2012-01-05 22:16:41 +00:00
compat In sys/compat/linux/linux_ioctl.c, work around a warning when a pointer 2012-01-03 18:49:39 +00:00
conf Add the CAM Target Layer (CTL). 2012-01-12 00:34:33 +00:00
contrib - Do not enumerate PCIe bus on CN56XX Pass 1 devices to avoid hard hang. 2012-01-13 02:33:55 +00:00
crypto Update Copyright. 2011-10-27 14:15:26 +00:00
ddb Use strchr() and strrchr(). 2012-01-02 12:12:10 +00:00
dev Two performance-related fixes: 2012-01-13 10:21:15 +00:00
fs jwd@ reported via email that the "CacheSize" field reported by "nfsstat -e -s" 2012-01-11 02:46:42 +00:00
gdb kern cons: introduce infrastructure for console grabbing by kernel 2011-12-17 15:08:43 +00:00
geom Add support for >2TB disks in GEOM RAID for Intel metadata format. 2012-01-09 23:01:42 +00:00
gnu Replace GPL'd headers in the emu10kx snd driver code. 2012-01-11 21:17:14 +00:00
i386 Add the CAM Target Layer (CTL). 2012-01-12 00:34:33 +00:00
ia64 Add the CAM Target Layer (CTL). 2012-01-12 00:34:33 +00:00
isa - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
kern Convert the per-interface address list lock from a mutex to a reader/writer 2012-01-09 19:34:12 +00:00
kgssapi Add missing break statement to make sure all 3DES etypes really are treated 2011-10-10 09:13:07 +00:00
libkern Implement extensions on top of standards instead of the other way around. 2012-01-03 07:05:30 +00:00
mips - Fix .rela case of R_MIPS_26 relocation. Addednds save diferently for 2012-01-13 07:00:47 +00:00
modules Merge ACPICA 20120111. 2012-01-11 23:06:37 +00:00
net Clarify throughout the vlan(4) code the difference between a "tag" (the 2012-01-12 18:39:37 +00:00
net80211 Add the ability to kick an existing mesh node without waiting for it 2012-01-11 17:10:27 +00:00
netatalk Convert all users of IF_ADDR_LOCK to use new locking macros that specify 2012-01-05 19:00:36 +00:00
netgraph Use strchr() and strrchr(). 2012-01-02 12:12:10 +00:00
netinet Bunch of fixes to pfsync(4) module load/unload: 2012-01-09 08:50:22 +00:00
netinet6 Add an SCTP sysctl "blackhole", similar to the one for TCP. 2012-01-08 09:56:24 +00:00
netipsec Remove unused 'plen' variable. 2011-11-26 23:57:03 +00:00
netipx Convert all users of IF_ADDR_LOCK to use new locking macros that specify 2012-01-05 19:00:36 +00:00
netnatm
netncp Change ncp_scan_bindery_object() to pass a constant search string. 2011-10-16 08:44:03 +00:00
netsmb Add unicode support to msdosfs and smbfs; original pathes from imura, 2011-11-18 03:05:20 +00:00
nfs Some cleanup of BOOTP code. Initially I wanted to just change the ifioctl() 2011-12-13 07:02:48 +00:00
nfsclient jwd@ reported a problem via email where the old NFS client would 2011-12-21 02:45:51 +00:00
nfsserver Honor NFSv3 commit call (RFC 1813, Section 3.3.21) where when count is 0, 2011-12-15 02:26:53 +00:00
nlm Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
ofed Replace __signed by signed. 2011-12-13 13:38:03 +00:00
opencrypto
pc98 Flip these options on so the modules build correctly for now. 2012-01-06 08:51:20 +00:00
pci To save more power, switch to 10/100Mbps link when controller is 2011-11-23 23:29:18 +00:00
powerpc Add PWM monitoring sysctl to G4 MDD (Windtunnel) fan driver. While there, clean 2012-01-12 22:21:20 +00:00
rpc Both a crash reported on freebsd-current on Oct. 18 under the 2011-11-03 14:38:03 +00:00
security Use strchr() and strrchr(). 2012-01-02 12:12:10 +00:00
sparc64 Add the CAM Target Layer (CTL). 2012-01-12 00:34:33 +00:00
sys Add __generic(), to be able to use a very simple _Generic(). 2012-01-05 10:43:03 +00:00
teken Link the demo application against ncursesw to make Unicode work. 2011-10-13 14:20:27 +00:00
tools Restore the comment that I removed by accident. 2011-11-09 13:26:59 +00:00
ufs Avoid LOR between vfs_busy() lock and covered vnode lock on quotaon(). 2012-01-08 23:06:53 +00:00
vm Change the type of the paging_in_progress refcounter from u_short to 2012-01-10 18:05:44 +00:00
x86 Fix a few bugs in the SRAT parsing code: 2012-01-03 20:53:58 +00:00
xdr
xen s/timout/timeout 2011-12-15 06:29:13 +00:00
Makefile Improve the cscope target's handling of MD directories. Automatically 2012-01-03 17:31:27 +00:00