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0c4f60b734
freebsd-dev/sys
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Andriy Gapon 0c4f60b734 MFV r353619: 9691 fat zap should prefetch when iterating 
illumos/illumos-gate@52abb70e07
52abb70e07

https://www.illumos.org/issues/9691
  When iterating over a ZAP object, we're almost always certain to
  iterate over the entire object. If there are multiple leaf blocks, we
  can realize a performance win by issuing reads for all the leaf blocks
  in parallel when the iteration begins.
  For example, if we have 10,000 snapshots, "zfs destroy -nv
  pool/fs@1%9999" can take 30 minutes when the cache is cold. This
  change provides a >3x performance improvement, by issuing the reads
  for all ~64 blocks of each ZAP object in parallel.

Author: Matthew Ahrens <mahrens@delphix.com>
Obtained from:	illumos
MFC after:	2 weeks
2019-10-16 07:09:00 +00:00
..
amd64 (6/6) Convert pmap to expect busy in write related operations now that all 2019-10-15 03:51:46 +00:00
arm (6/6) Convert pmap to expect busy in write related operations now that all 2019-10-15 03:51:46 +00:00
arm64 (6/6) Convert pmap to expect busy in write related operations now that all 2019-10-15 03:51:46 +00:00
bsm
cam Add kern.cam.da.X.quirks tunable, similar existing for ada. 2019-09-26 14:48:39 +00:00
cddl MFV r353619: 9691 fat zap should prefetch when iterating 2019-10-16 07:09:00 +00:00
compat Fix missing epochification of the LinuxKPI after r353292. 2019-10-15 11:14:14 +00:00
conf powerpc: Add AmigaOne platform, a subclass of MPC85xx 2019-10-16 00:38:50 +00:00
contrib Fix read past end of struct in ncsw glue code. 2019-10-12 23:16:17 +00:00
crypto Stop using des_cblock * for arguments to DES functions. 2019-08-26 17:25:07 +00:00
ddb ddb(4): Add some support for lexing IPv6 addresses 2019-09-09 16:32:23 +00:00
dev ixgbe: Disable EEE for backplane X550EM_X 2019-10-15 21:56:19 +00:00
dts dtso: allwinner: Add an overlay for H3 thermal node 2019-08-24 13:26:34 +00:00
fs (4/6) Protect page valid with the busy lock. 2019-10-15 03:45:41 +00:00
gdb gdb(4): Root a sysctl tree at 'debug.gdb.' 2019-09-08 22:52:47 +00:00
geom Add a "count_until_fail" option to gnop, which says to start failing 2019-09-13 23:03:56 +00:00
gnu arm: dts: ti: Fix mmc3 instance by setting it to disabled 2019-10-07 08:11:49 +00:00
i386 (6/6) Convert pmap to expect busy in write related operations now that all 2019-10-15 03:51:46 +00:00
isa
kern Generalize ARM specific comments in devmap 2019-10-15 23:21:52 +00:00
kgssapi Stop using des_cblock * for arguments to DES functions. 2019-08-26 17:25:07 +00:00
libkern Remove zlib 1.0.4 from kernel. 2019-08-25 17:13:00 +00:00
mips Use -march=octeon+ for OCTEON1. 2019-10-15 17:28:26 +00:00
modules Add a missing include of opt_sctp.h. 2019-10-12 23:01:16 +00:00
net The two functions ifnet_byindex() and ifnet_byindex_locked() are exactly the 2019-10-15 12:08:09 +00:00
net80211 Don't use if_maddr_rlock() in 802.11, use epoch(9) directly instead. 2019-10-10 23:55:33 +00:00
netgraph Don't use if_maddr_rlock() in ng_eiface(4), use epoch(9) directly instead. 2019-10-10 23:49:19 +00:00
netinet Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
netinet6 in6ifa_llaonifp() is never called from fast path, so do not require 2019-10-14 15:33:53 +00:00
netipsec Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
netpfil Use epoch(9) directly instead of obsoleted KPI. 2019-10-14 16:37:41 +00:00
netsmb Stop using des_cblock * for arguments to DES functions. 2019-08-26 17:25:07 +00:00
nfs
nfsclient
nfsserver
nlm
ofed Fix missing epochification of the ibcore code after r353292. 2019-10-15 11:12:31 +00:00
opencrypto kTLS support for TLS 1.3 2019-09-27 19:17:40 +00:00
powerpc powerpc/mpc85xx: Fix function type for fsl_pcib_error_intr() 2019-10-16 03:03:59 +00:00
riscv (6/6) Convert pmap to expect busy in write related operations now that all 2019-10-15 03:51:46 +00:00
rpc Avoid relying on header pollution from sys/refcount.h. 2019-07-29 20:26:01 +00:00
security Define macro VM_MAP_ENTRY_FOREACH for enumerating the entries in a vm_map. 2019-10-08 07:14:21 +00:00
sparc64 (6/6) Convert pmap to expect busy in write related operations now that all 2019-10-15 03:51:46 +00:00
sys Generalize ARM specific comments in devmap 2019-10-15 23:21:52 +00:00
teken Adjust teken to allow build as part of loader 2019-09-05 18:07:40 +00:00
tests
tools fw_stub.awk: use @generated tag in generated files 2019-09-11 13:35:22 +00:00
ufs ufs: add root vnode caching 2019-10-06 22:18:03 +00:00
vm (5/6) Move the VPO_NOSYNC to PGA_NOSYNC to eliminate the dependency on the 2019-10-15 03:48:22 +00:00
x86 x86: Use canonical spelling of MOVDIR64B feature/instruction 2019-10-14 20:55:01 +00:00
xdr
xen
Makefile