jdolecek 9b785b5267 adjust heuristics for read-ahead to skip the full read-ahead when last page of ...

the range is already cached; this speeds up I/O from cache, since it avoids
the lookup and allocation overhead

on my system I observed 4.5% - 15% improvement for cached I/O - from 2.2 GB/s to
2.3 GB/s for cached reads using non-direct UBC, and from 5.6 GB/s to 6.5 GB/s
for UBC using direct map

part of PR kern/53124

2018-05-19 15:18:02 +00:00

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pmap

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files.uvm

Remove emap support. Unfortunately it never got to state where it would be

2018-05-19 11:39:37 +00:00

Makefile

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uvm_amap.c

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uvm_amap.h

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uvm_anon.c

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uvm_anon.h

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uvm_aobj.c

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uvm_aobj.h

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uvm_bio.c

change code to take advantage of direct map when available, avoiding the need

2018-05-19 15:13:26 +00:00

uvm_coredump.c

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uvm_ddb.h

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uvm_device.c

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uvm_device.h

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uvm_extern.h

Remove emap support. Unfortunately it never got to state where it would be

2018-05-19 11:39:37 +00:00

uvm_fault_i.h

don't store the rssmax in the lwp rusage, it is a per proc property. Instead

2018-05-08 19:33:57 +00:00

uvm_fault.c

don't store the rssmax in the lwp rusage, it is a per proc property. Instead

2018-05-08 19:33:57 +00:00

uvm_fault.h

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uvm_glue.c

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uvm_glue.h

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uvm_init.c

Remove emap support. Unfortunately it never got to state where it would be

2018-05-19 11:39:37 +00:00

uvm_io.c

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uvm_km.c

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uvm_km.h

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uvm_loan.c

detect wraparound when bumping page wire_count and loan_count

2018-05-19 11:02:33 +00:00

uvm_loan.h

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uvm_map.c

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uvm_map.h

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uvm_meter.c

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uvm_mmap.c

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uvm_mremap.c

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uvm_object.c

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uvm_object.h

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uvm_page.c

add experimental new function uvm_direct_process(), to allow of read/writes

2018-05-19 15:03:26 +00:00

uvm_page.h

add experimental new function uvm_direct_process(), to allow of read/writes

2018-05-19 15:03:26 +00:00

uvm_pager.c

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uvm_pager.h

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uvm_param.h

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uvm_pdaemon.c

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uvm_pdaemon.h

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uvm_pdpolicy_clock.c

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uvm_pdpolicy_clockpro.c

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uvm_pdpolicy_impl.h

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uvm_pdpolicy.h

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uvm_pglist.c

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uvm_pglist.h

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uvm_physseg.c

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uvm_physseg.h

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uvm_pmap.h

add experimental new function uvm_direct_process(), to allow of read/writes

2018-05-19 15:03:26 +00:00

uvm_prot.h

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uvm_readahead.c

adjust heuristics for read-ahead to skip the full read-ahead when last page of

2018-05-19 15:18:02 +00:00

uvm_readahead.h

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uvm_stat.c

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uvm_stat.h

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uvm_swap.c

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uvm_swap.h

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uvm_swapstub.c

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uvm_unix.c

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uvm_user.c

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uvm_vnode.c

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uvm.h

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