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21fae96123
freebsd-dev/sys
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Jeff Roberson 21fae96123 Parallelize the buffer cache and rewrite getnewbuf(). This results in a 
8x performance improvement in a micro benchmark on a 4 socket machine.

 - Get buffer headers from a per-cpu uma cache that sits in from of the
   free queue.
 - Use a per-cpu quantum cache in vmem to eliminate contention for kva.
 - Use multiple clean queues according to buffer cache size to eliminate
   clean queue lock contention.
 - Introduce a bufspace daemon that attempts to prevent getnewbuf() callers
   from blocking or doing direct recycling.
 - Close some bufspace allocation races that could lead to endless
   recycling.
 - Further the transition to a more modern style of small functions grouped
   by prefix in order to improve growing complexity.

Sponsored by:	EMC / Isilon
Reviewed by:	kib
Tested by:	pho
2015-10-14 02:10:07 +00:00
..
amd64 Remove compatibility shims for legacy ATA device names. 2015-10-11 13:01:51 +00:00
arm Remove compatibility shims for legacy ATA device names. 2015-10-11 13:01:51 +00:00
arm64 Build changes that allow the modules on arm64. 2015-10-08 17:42:08 +00:00
boot Change gptldr from relocating 0xfff1 bytes of boot2 to relocating 0x20000 2015-10-08 15:38:34 +00:00
bsm
cam Make delete method set via kern.cam.da.X.delete_method persistent. 2015-10-11 18:26:06 +00:00
cddl FreeBSD-specific addition to r289191. 2015-10-12 18:15:25 +00:00
compat Properly format pointer size independent CloudABI system calls. 2015-10-08 05:27:45 +00:00
conf There are times when it would be really nice to have a record of the last few 2015-10-14 00:35:37 +00:00
contrib Flip on fast frames support for AR5416 and AR9300 series NICs. 2015-10-10 00:13:45 +00:00
crypto const'ify an arg that we don't update... 2015-07-29 23:37:15 +00:00
ddb Make kstack_pages a tunable on arm, x86, and powepc. On i386, the 2015-08-10 17:18:21 +00:00
dev NTB: MFV 58b88920: Document HW errata 2015-10-13 23:43:06 +00:00
fs Ensure that when a blockable open of fifo returns success, a valid 2015-09-20 21:18:33 +00:00
gdb
geom Remove compatibility shims for legacy ATA device names. 2015-10-11 13:01:51 +00:00
gnu Fixing a memory leak on module unloading. 2015-09-11 22:43:35 +00:00
i386 Remove compatibility shims for legacy ATA device names. 2015-10-11 13:01:51 +00:00
isa
kern Parallelize the buffer cache and rewrite getnewbuf(). This results in a 2015-10-14 02:10:07 +00:00
kgssapi
libkern Add the __aeabi_memclr8 symbol, clang 3.7 uses this. 2015-09-21 18:35:32 +00:00
mips Correct flash layout (this is a 4M flash unit). 2015-10-11 18:37:29 +00:00
modules urtwn(4): split *reg and *var parts (no functional change). 2015-10-12 05:14:49 +00:00
net Fix a bug that caused reinitialization failure of MAC addresses on 2015-10-07 06:32:34 +00:00
net80211 net80211: move ieee80211_free_node() call on error from ic_raw_xmit() to ieee80211_raw_output(). 2015-10-12 04:55:20 +00:00
netgraph Add support for PPP-Max-Payload PPPoE tag (RFC4638). 2015-09-11 09:15:27 +00:00
netinet There are times when it would be really nice to have a record of the last few 2015-10-14 00:35:37 +00:00
netinet6 Invoke lle_event for new entry iff it has lladdr set. 2015-10-04 19:10:27 +00:00
netipsec Take extra reference to security policy before calling crypto_dispatch(). 2015-09-30 08:16:33 +00:00
netnatm
netpfil Bump number of prefixes in O_IP_<SRC|DST> from 15 to 31 (max possible). 2015-10-03 05:42:25 +00:00
netsmb
nfs Wait up to 10 seconds for late-initializing network interfaces to arrive. 2015-09-26 13:55:55 +00:00
nfsclient
nfsserver
nlm
ofed Fix build broken by r287861. 2015-09-16 15:40:08 +00:00
opencrypto Make IPsec work with AES-GCM and AES-ICM (aka CTR) in OCF... IPsec 2015-08-04 17:47:11 +00:00
pc98 Remove compatibility shims for legacy ATA device names. 2015-10-11 13:01:51 +00:00
powerpc Use IIC_EBUSBSY and IIC_BUSERR status values consistantly across all drivers. 2015-10-09 22:49:50 +00:00
rpc Increase group limit for kerberized NFSv4 2015-09-26 16:30:16 +00:00
security fd: make 'rights' a manadatory argument to fget* functions 2015-07-05 19:05:16 +00:00
sparc64 Add support for weak symbols to the kernel linkers. It means that 2015-09-20 01:27:59 +00:00
sys There are times when it would be really nice to have a record of the last few 2015-10-14 00:35:37 +00:00
teken Sync HPA and VPA implementations with CUP. 2015-08-24 07:49:27 +00:00
tools save some bytes by using more concise SDT_PROBE<n> instead of SDT_PROBE 2015-09-28 12:14:16 +00:00
ufs In softdep_setup_freeblocks(): 2015-10-07 12:36:28 +00:00
vm Parallelize the buffer cache and rewrite getnewbuf(). This results in a 2015-10-14 02:10:07 +00:00
x86 Ensure the client regions for unmapped bounce buffers created through bus_dmamap_load_phys() do not span multiple pages. 2015-10-13 02:17:56 +00:00
xdr
xen xen/console: Introduce a new console driver for Xen guest 2015-10-08 16:39:43 +00:00
Makefile Kill EoL whitespace. 2015-05-29 14:03:07 +00:00