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b49d824e8b
freebsd-skq/sys
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Mike Silbersack b49d824e8b Add the SF_NODISKIO flag to sendfile. This flag causes sendfile to be 
mindful of blocking on disk I/O and instead return EBUSY when such
blocking would occur.

Results from the DeBox project indicate that blocking on disk I/O
can slow the performance of a kqueue/poll based webserver.  Using
a flag such as SF_NODISKIO and throwing connections that would block
to helper processes/threads helped increase performance.

Currently, only the Flash webserver uses this flag, although it could
probably be applied to thttpd with relative ease.

Idea by:	Yaoping Ruan & Vivek Pai
2004-02-08 07:35:48 +00:00
..
alpha Regen. 2004-02-04 22:00:44 +00:00
amd64 I forgot to add the NO_MODULES override for NOTES 2004-02-08 00:39:38 +00:00
arm Add sysentvec->sv_fixlimits() hook so that we can catch cases on 64 bit 2003-09-25 01:10:26 +00:00
boot Argh, unbreak "make depend" for AMD64. 2004-02-07 23:30:45 +00:00
cam Fix type in comment, 's/writtent/written/' 2004-01-18 00:17:14 +00:00
coda - Implement selwakeuppri() which allows raising the priority of a 2003-11-09 09:17:26 +00:00
compat Argh. kthread_suspend() when in P_KTHREAD context, tsleep() when not, 2004-02-07 23:47:10 +00:00
conf Reduce the inline limit from 20000 to 8000 after the previous changes 2004-02-06 20:40:04 +00:00
contrib This commit was generated by cvs2svn to compensate for changes in r124528, 2004-01-14 18:54:22 +00:00
crypto Fix a reentrancy issue in md5_calc(). 2004-01-27 18:57:21 +00:00
ddb If not in the debugger or if the user requests it with the 2004-01-28 06:51:18 +00:00
dev Don't hold NDIS_LOCK() around call to ndis_getstate_80211() since it 2004-02-07 23:52:58 +00:00
fs Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
geom We don't need to hold Giant to create the worker kthread. 2004-02-07 23:01:17 +00:00
gnu Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
i4b Based on an excellent suggestion from tanimura@ define I4BPRI and use it 2003-11-10 14:20:34 +00:00
i386 Regen. 2004-02-06 20:21:18 +00:00
ia64 Sort PFIL_HOOKS. 2004-01-27 20:22:53 +00:00
isa Significantly reduce the "jitter" that is typical for PS/2 mice 2003-12-11 11:28:11 +00:00
isofs/cd9660 Spell magic '16' number as IO_SEQSHIFT. 2004-01-19 20:03:43 +00:00
kern Add the SF_NODISKIO flag to sendfile. This flag causes sendfile to be 2004-02-08 07:35:48 +00:00
libkern Translate from GNU C to ISO C. 2004-01-14 07:47:10 +00:00
modules Always build ext2fs module. There is no written policy preventing the 2004-01-28 04:16:13 +00:00
net Add the kernel side of network interface renaming support. 2004-02-04 02:54:25 +00:00
net80211 Change WI_RID_SCAN_RES compatibility interface to return the result after 2004-01-19 05:25:43 +00:00
netatalk Eliminate a duplicate free when deleting an interface address. This 2003-11-28 04:19:41 +00:00
netatm Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
netgraph Use the official ng_timeout function to trigger sending. This means, 2004-01-30 15:34:57 +00:00
netinet pass pcb rather than so. it is expected that per socket policy 2004-02-03 18:20:55 +00:00
netinet6 KNF 2004-02-04 12:55:45 +00:00
netipsec must convert protocol to sa type when preparing a DELETE message 2004-02-05 23:19:17 +00:00
netipx Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
netkey avoid duplicate free. 2004-01-25 17:18:12 +00:00
netnatm Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
netncp The present defaults for the open and close for device drivers which 2003-09-27 12:01:01 +00:00
netsmb Add support for SMB request signing, which prevents "man in the middle" 2004-01-02 22:38:42 +00:00
nfs University of Michigan's Citi NFSv4 kernel client code. 2003-11-14 20:54:10 +00:00
nfs4client This patch fixes two little portability (to !GCC compilers) problems: 2003-12-11 11:30:26 +00:00
nfsclient Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
nfsserver Fix some becuase -> because typos. 2003-12-17 16:12:01 +00:00
opencrypto Do not aggressively unroll the AES implementation, in non-benchmarking use 2004-02-04 08:44:10 +00:00
pc98 MFi386: revision 1.397 (cosmetic changes) 2004-01-30 13:15:42 +00:00
pccard - Implement selwakeuppri() which allows raising the priority of a 2003-11-09 09:17:26 +00:00
pci Fix multicast and promiscuous mode handling for Yukon devices. 2004-01-21 22:32:15 +00:00
posix4 The sem_timedwait() and ksem_timedwait() functions both 2004-02-03 22:27:03 +00:00
powerpc - add a description of what .gdbinit should contain. 2004-02-04 13:23:05 +00:00
rpc Don't panic because of RPC proto mismatches. Whitespace cleanup. 2004-01-17 21:25:05 +00:00
security Commit file missed in last pass: MAC api uses 'struct pipepair', not 2004-02-01 21:52:09 +00:00
sparc64 - Fix for sparc64 to use new __panic() function 2004-01-27 15:02:18 +00:00
sys Add the SF_NODISKIO flag to sendfile. This flag causes sendfile to be 2004-02-08 07:35:48 +00:00
tools Attempt to clean up the emu10k1-alsa.h stuff so that config doesn't 2004-02-05 22:51:16 +00:00
ufs Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
vm swp_pager_async_iodone() no longer requires Giant. Modify bufdone() 2004-02-07 08:54:50 +00:00
Makefile Replaced outdated comment. 2004-01-17 03:28:27 +00:00