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87ee6303e5
freebsd-dev/sys
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Alan Cox 87ee6303e5 Prior to r254304, we only began scanning the active page queue when the 
amount of free memory was close to the point at which we would begin
reclaiming pages.  Now, we continuously scan the active page queue,
regardless of the amount of free memory.  Consequently, we are continuously
calling pmap_ts_referenced() on active pages.

Prior to this change, pmap_ts_referenced() would always demote superpage
mappings in order to obtain finer-grained reference information.  This made
sense because we were coming under memory pressure and would soon have to
begin reclaiming pages.  Now, however, with continuous scanning of the
active page queue, these demotions are taking a toll on performance.  To
address this problem, I have replaced the demotion with a heuristic for
periodically clearing the reference flag on superpage mappings.

Approved by:	re (kib)
Sponsored by:	EMC / Isilon Storage Division
2013-09-11 17:23:42 +00:00
..
amd64 Fix a limitation in bhyve that would limit the number of virtual machines to 2013-09-11 07:11:14 +00:00
arm Export a function to allow BCM2835's peripheral devices to enable their 2013-09-07 18:48:15 +00:00
boot Initial support for the Digi ConnectCore(c) i.MX53 / Wi-i.MX53 boards. 2013-09-01 20:15:35 +00:00
bsm Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
cam Make SES driver adequately react on simple enclosure devices -- read Short 2013-09-06 15:41:37 +00:00
cddl MFV r247844 (illumos-gate 13975:ef6409bc370f) 2013-09-10 01:46:47 +00:00
compat Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use 2013-09-09 18:11:59 +00:00
conf Back out r255440. /usr/bin/gcc @r255185 (2013-09-03) can build this. 2013-09-10 16:50:13 +00:00
contrib Fix !INET6 build. 2013-09-07 09:47:18 +00:00
crypto Use the fact that the AES-NI instructions can be pipelined to improve 2013-09-03 18:31:23 +00:00
ddb
dev Clear correct data structure. 2013-09-11 10:18:36 +00:00
fs Fix the length calculation for the final block of a sendfile(2) 2013-09-10 10:05:59 +00:00
gdb rename scheduler->swapper and SI_SUB_RUN_SCHEDULER->SI_SUB_LAST 2013-07-24 09:45:31 +00:00
geom Remove stub implementation. 2013-09-05 09:44:09 +00:00
gnu/fs/reiserfs
i386 Prior to r254304, we only began scanning the active page queue when the 2013-09-11 17:23:42 +00:00
ia64 Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use 2013-09-09 18:11:59 +00:00
isa
kern Implement sendfile(2) for the posix shared memory segment file descriptor, 2013-09-11 06:41:15 +00:00
kgssapi Add support for host-based (Kerberos 5 service principal) initiator 2013-07-09 01:05:28 +00:00
libkern Fix watchdog pretimeout. 2013-07-27 20:47:01 +00:00
mips Netlogic XLP network driver update 2013-09-07 18:26:16 +00:00
modules Back out r255440. /usr/bin/gcc @r255185 (2013-09-03) can build this. 2013-09-10 16:50:13 +00:00
net Clean up SIOCSIFDSTADDR usage from ifnet drivers. The ioctl itself is 2013-09-11 09:19:44 +00:00
net80211 Create a new function to complete 802.11 mbuf transmission. 2013-08-27 14:37:13 +00:00
netatalk
netgraph MFC 2013-09-06 17:42:12 +00:00
netinet Fix the aborting of association with the iterator using an empty 2013-09-09 21:40:07 +00:00
netinet6 Fix the length calculation for the final block of a sendfile(2) 2013-09-10 10:05:59 +00:00
netipsec Remove most of the remaining sysctl name list macros. They were only 2013-08-26 18:16:05 +00:00
netipx
netnatm Fix the length calculation for the final block of a sendfile(2) 2013-09-10 10:05:59 +00:00
netpfil Merge 1.12 of pf_lb.c from OpenBSD, with some changes. Original commit: 2013-09-02 10:14:25 +00:00
netsmb Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
nfs Changes to allow using BOOTP_NFSROOT and mounting an nfs root filesystem 2013-07-31 19:14:00 +00:00
nfsclient A problem with the old NFS client where large writes to large files 2013-07-04 00:54:23 +00:00
nfsserver Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
nlm Intermittent crashes in the NLM (rpc.lockd) code during system 2013-09-06 23:14:31 +00:00
ofed Handle cases where capability rights are not provided. 2013-09-05 11:58:12 +00:00
opencrypto Make sendfile() a method in the struct fileops. Currently only 2013-08-15 07:54:31 +00:00
pc98 MFi386: r254619 2013-08-22 16:39:59 +00:00
pci Update PCI drivers to no longer look at the MEMIO-enabled bit in the PCI 2013-08-12 23:30:01 +00:00
powerpc Revert r255420. This seems to break some Powermac systems and will be 2013-09-09 13:40:53 +00:00
rpc It was reported via email that the cu_sent field used by the 2013-09-06 02:34:34 +00:00
security - Use make_dev_credf(MAKEDEV_REF) instead of the race-prone make_dev()+ 2013-09-07 13:45:44 +00:00
sparc64 Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use 2013-09-09 18:11:59 +00:00
sys Make a bump for r255426. 2013-09-10 10:38:15 +00:00
teken
tools
ufs Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
vm Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use 2013-09-09 18:11:59 +00:00
x86 Implement PV IPIs for PVHVM guests and further converge PV and HVM 2013-09-06 22:17:02 +00:00
xdr
xen Implement PV IPIs for PVHVM guests and further converge PV and HVM 2013-09-06 22:17:02 +00:00
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