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[Gcl-devel] Profiling [ was Re: lisp reader enhancement ]
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From: |
Camm Maguire |
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Subject: |
[Gcl-devel] Profiling [ was Re: lisp reader enhancement ] |
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Date: |
04 Aug 2003 19:21:07 -0400 |
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User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 |
Greetings! Just a followup note here in case you're still interested in
trying to analyze the performance.
1) If you reran with the new gbc-time, I'd be interested to know
what it was.
2) I've been looking at GCL's two profiling modes. The first is based
on the 'profil' call to libc. It works, but unfortunately our
documentation is misleading/wrong. The idea is to:
0) Apply the following two patches:
===================================================================
RCS file: /cvsroot/gcl/gcl/o/fat_string.c,v
retrieving revision 1.14
diff -u -r1.14 fat_string.c
--- fat_string.c 15 Feb 2003 00:38:28 -0000 1.14
+++ fat_string.c 4 Aug 2003 22:52:09 -0000
@@ -49,7 +49,7 @@
if( type_of(start_address)!=t_fixnum || type_of(scale)!=t_fixnum)
FEerror("Needs start address and scale as args",0);
- profil((void *) (ar->ust.ust_self), (ar->ust.ust_dim),
+ profil(!(fix(start_address)*fix(scale)) ? NULL : (void *)
(ar->ust.ust_self), (ar->ust.ust_dim),
fix(start_address),fix(scale) << 8);
RETURN1(start_address);
}
--- ptable.h 12 Jul 2002 22:00:48 -0000 1.4
+++ ptable.h 4 Aug 2003 22:51:56 -0000
@@ -50,7 +50,7 @@
#ifdef SPECIAL_RSYM
struct string_address_table c_table;
#else
-static struct bfd_link_info link_info;
+struct bfd_link_info link_info;
#endif
struct string_address_table combined_table;
a) in your program, first run set-up-profile, defined in
profile.lsp (should be in your gcl autoload path). The first
argument is the size of the profile array, with 1000000 being
suggested in the docs -- this works for me. What is not
documented is the optional second argument specifying the
maximum number of functions in your image. I had to supply
this to increase the default value when testing in maxima.
Here is my call:
:lisp (si::set-up-profile 1000000 8000)
Loaded c and other function addresses
Using profile-array length 1000000
Use (si::prof 0 90) to start and (prof 0 0) to stop:
This starts monitoring at address 0
thru byte (256/90)*(length *profile-array*)
(si::display-prof) displays the results
NIL
b) run si::prof with the starting address you desire to
examine, and a 'scale' parameter indicating how many counter
profile array elements to allocate to each 256 bytes of code.
You can see these addresses reported on loading binary
modules, or you could use the DBEGIN value issued at configure
time. You could also try function-address. We need to make
it easier to just say 'profile my whole program', but what I
did was find the address of _init in gdb, find the value of
heap_end in gdb, figure out a good scale for this amount of
memory to correspond to a 1000000 byte array, and issue the
following call for maxima:
:lisp (si::prof 134522412 15)
c) run some intesive code, I did load("tests.lisp");
d) Turn off the profiler
:lisp (si::prof 0 0)
e) display the results, probably using the same scale and
start address as in b):
:lisp (si::display-profile 134522412 15)
My output follows. There are a few gotchas in interpretation
-- If a global function in GCL's core is separated from the
next such function by a bunch of static functions, all counts
for the static functions get lumped into the first's counter.
The large values for 'enter_mark_origin' thus refers to the
GBC time in the marker and sweeper located in between in the
code. Also needs cleaning up.
All user functions are not thus afflicted. But the core
function counts are probably illustrative, as they may indicate
inefficiencies in the lisp compiler's optimization/inlining of
calls.
I short, I'd appreciate seeing your version of the following:
0.10% ( 1): strerror
0.10% ( 1): memmove
0.39% ( 4): IapplyVector
0.39% ( 4): Iinvoke_c_function_from_value_stack
0.10% ( 1): make_fixnum1
0.10% ( 1): pack_hash
0.19% ( 2): intern
0.10% ( 1): Lintern
0.10% ( 1): Lunuse_package
0.10% ( 1): Lparse_namestring
0.10% ( 1): fLrationalp
0.10% ( 1): fLfunctionp
1.07% ( 11): eql
0.58% ( 6): equal
0.29% ( 3): init_predicate_function
0.10% ( 1): edit_double
0.78% ( 8): write_object
0.68% ( 7): Lwrite_char
0.10% ( 1): princ
0.19% ( 2): init_prog
0.58% ( 6): read_object
0.39% ( 4): NIL
0.19% ( 2): NIL
0.87% ( 9): Lread_char
0.10% ( 1): rl_putc_em
0.48% ( 5): symbol_function
0.10% ( 1): Lelt
1.55% ( 16): elt
0.39% ( 4): elt_set
0.87% ( 9): length
0.19% ( 2): nreverse
0.10% ( 1): fSclear_connection_state
0.19% ( 2): coerce_to_string
0.10% ( 1): get_string_start_end
0.19% ( 2): Lstring_neq
0.10% ( 1): Lmake_string
0.19% ( 2): Lstring_right_trim
0.10% ( 1): structure_ref
0.68% ( 7): symbol_value
1.84% ( 19): getf
0.10% ( 1): get
0.19% ( 2): remf
0.10% ( 1): remprop
0.19% ( 2): Lgetf
0.39% ( 4): check_type_symbol
0.10% ( 1): check_type_string
0.10% ( 1): check_type_cons
0.10% ( 1): Ltype_of
2.62% ( 27): alloc_object
3.30% ( 34): make_cons
0.39% ( 4): alloc_relblock
0.29% ( 3): fLrow_major_aref
0.10% ( 1): fSaset1
0.10% ( 1): fSget_aelttype
0.19% ( 2): gset
0.10% ( 1): array_allocself
0.10% ( 1): fLfill_pointer
0.48% ( 5): setq
0.10% ( 1): fLmakunbound
0.10% ( 1): fSset_gmp_allocate_relocatable
0.19% ( 2): new_bignum
0.10% ( 1): normalize_big_to_object
0.10% ( 1): mul_int_big
0.39% ( 4): normalize_big
0.10% ( 1): big_minus
0.19% ( 2): maybe_replace_big
0.39% ( 4): integer_quotient_remainder_1
0.19% ( 2): parse_key_new_new
0.19% ( 2): Lchar_eq
0.10% ( 1): Lchar_neq
0.10% ( 1): Lchar_upcase
0.10% ( 1): cplus
0.10% ( 1): init_error
1.94% ( 20): funcall
0.19% ( 2): funcall_no_event
0.10% ( 1): super_funcall
0.29% ( 3): super_funcall_no_event
0.10% ( 1): readc_stream
0.10% ( 1): unreadc_stream
0.58% ( 6): writec_stream
0.29% ( 3): flush_stream
0.39% ( 4): read_fasl_data
0.10% ( 1): Lformat
0.29% ( 3): fLformat
0.10% ( 1): frs_sch_catch
0.10% ( 1): call_or_link
0.48% ( 5): c_apply_n
3.39% ( 35): call_proc_new
31.62% ( 326): enter_mark_origin
0.10% ( 1): perm_writable
1.65% ( 17): car
1.65% ( 17): cdr
0.29% ( 3): kar
1.26% ( 13): list
0.19% ( 2): listA
0.10% ( 1): append
0.19% ( 2): copy_list
0.19% ( 2): Lcdr
0.10% ( 1): cddr
0.39% ( 4): Llast
0.39% ( 4): Lmake_list
0.10% ( 1): Lrevappend
0.29% ( 3): nconc
0.10% ( 1): Lreconc
0.10% ( 1): fixnum_add
0.19% ( 2): number_plus
0.19% ( 2): number_minus
0.19% ( 2): get_gcd
0.97% ( 10): number_compare
0.10% ( 1): Lall_the_same
0.10% ( 1): number_expt
0.10% ( 1): GET-INSTREAM
0.29% ( 3): READ-FROM-STRING
0.10% ( 1): TYPEP
0.10% ( 1): SYSTEM::NORMALIZE-TYPE
0.48% ( 5): SYSTEM::KNOWN-TYPE-P
0.29% ( 3): SUBTYPEP
0.10% ( 1): CONCATENATE
0.10% ( 1): SYSTEM::BAD-SEQ-LIMIT
0.10% ( 1): REMOVE
0.10% ( 1): DELETE
0.19% ( 2): POSITION
0.10% ( 1): SORT
0.10% ( 1): WITH-HASH-TABLE-ITERATOR
0.10% ( 1): user_match
0.10% ( 1): ASSQR
0.10% ( 1): SYS-FREE-MEMORY
0.19% ( 2): MGET
0.10% ( 1): MACLISP-TYPEP
0.19% ( 2): BOTHCASE-IMPLODE
0.10% ( 1): LIST-STRING
0.10% ( 1): TYO
0.39% ( 4): TYI
0.10% ( 1): FILE-TO-STRING
0.10% ( 1): ALPHALESSP
0.78% ( 8): MEMQ
0.10% ( 1): DELQ
0.29% ( 3): SAFE-GET
0.19% ( 2): GETL
0.10% ( 1): SUB
0.19% ( 2): ASSOL
0.10% ( 1): ASSOLIKE
0.10% ( 1): MAXIMA-SUBSTITUTE
0.19% ( 2): GETOP
0.19% ( 2): GETOPR
0.10% ( 1): $LISTP
0.10% ( 1): SPANG1
0.10% ( 1): $GETCHAR
0.10% ( 1): MEVALARGS
0.10% ( 1): SAFE-MGETL
1.36% ( 14): MEVAL1
0.10% ( 1): GETL-LM-FCN-PROP
0.10% ( 1): MGETL
0.10% ( 1): $SQRT
0.10% ( 1): $BINOMIAL
0.19% ( 2): ONEP1
0.39% ( 4): ZEROP1
0.19% ( 2): MNUMP
0.10% ( 1): RATNUMP
0.10% ( 1): MEXPTP
0.10% ( 1): $RATNUMP
0.10% ( 1): SPECREPCHECK
0.10% ( 1): CONSTANT
0.10% ( 1): MAXIMA-CONSTANTP
0.10% ( 1): MXORLISTP1
0.10% ( 1): CONSTFUN
0.10% ( 1): FREE
0.58% ( 6): SIMPLIFYA
0.29% ( 3): EQTEST
0.10% ( 1): RULECHK
0.10% ( 1): TIMESK
0.10% ( 1): PLS
0.10% ( 1): TESTT
0.10% ( 1): TESTTNEG
0.19% ( 2): SIMPTIMES
0.10% ( 1): STIMEX
0.10% ( 1): TMS
0.10% ( 1): SIGNUM1
0.19% ( 2): EXPTRL
0.10% ( 1): SIMPEXPT
0.29% ( 3): TIMESIN
0.58% ( 6): ALIKE1
0.10% ( 1): ALIKE
0.10% ( 1): ORDHACK
0.10% ( 1): RATNUMERATOR
0.39% ( 4): NTHKDR
0.10% ( 1): $MKEY
0.10% ( 1): MEVAL*
0.10% ( 1): KILL1
0.10% ( 1): REMALIAS
0.10% ( 1): STRING*
0.10% ( 1): $NOUNIFY
0.10% ( 1): PFLATTEN
0.10% ( 1): PMINUSP
0.10% ( 1): PQUOTIENT
0.19% ( 2): ALGORD
0.10% ( 1): PSIMP
0.10% ( 1): PCETIMES1
0.10% ( 1): PCTIMES
0.10% ( 1): PEXPTSQ
0.58% ( 6): $APROPOS
0.10% ( 1): DIVISORS
0.10% ( 1): COMPLETEVECTOR
0.10% ( 1): CFACTOR
0.19% ( 2): SAVEFACTORS
0.10% ( 1): FACTOROUT1
0.10% ( 1): PFACTOR1
0.10% ( 1): PSQUOREM1
0.10% ( 1): OLDCONTENT1
0.10% ( 1): PCONTENTZ
0.19% ( 2): $RATSIMP
0.10% ( 1): $FACTOR
0.10% ( 1): RATSETUP1
0.10% ( 1): GENSYM-READABLE
0.10% ( 1): ORDERPOINTER
0.10% ( 1): RATREP*
0.10% ( 1): RATF
0.29% ( 3): PREP1
0.10% ( 1): NEWVAR1
0.10% ( 1): PDISREP
0.10% ( 1): PDISREP!
0.10% ( 1): PDISREP2
0.10% ( 1): $RATDISREP
0.10% ( 1): CDISREP
0.10% ( 1): NEWVAR
0.10% ( 1): RADSORT
0.10% ( 1): RDIS*
0.10% ( 1): PRODCOEF
0.19% ( 2): FREEOF
0.10% ( 1): FLGREAT1
0.19% ( 2): STRING1
0.19% ( 2): MSIZE
0.10% ( 1): MSIZE-ATOM
0.10% ( 1): MSZ
0.10% ( 1): MSZ-MEXPT
0.29% ( 3): STRMDOIN
0.10% ( 1): NFORMAT
0.39% ( 4): FORM-MTIMES
0.10% ( 1): IMEMBER
0.10% ( 1): ALPHABETP
0.10% ( 1): ASCII-NUMBERP
0.10% ( 1): TYI-PARSE-INT
0.10% ( 1): ALIASLOOKUP
0.19% ( 2): GOBBLE-WHITESPACE
0.10% ( 1): PARSER-ASSOC
0.19% ( 2): READ-COMMAND-TOKEN-AUX
0.10% ( 1): READLIST
0.19% ( 2): SCAN-DIGITS
0.10% ( 1): COLLISION-CHECK
0.10% ( 1): MREAD
0.29% ( 3): ADD-LINEINFO
0.10% ( 1): TRIGINT
0.10% ( 1): $LISTOFVARS
0.19% ( 2): DIMENSION
0.10% ( 1): MAKESTRING
0.10% ( 1): DIMENSION-SUPERSCRIPT
0.10% ( 1): CHECKFIT
0.19% ( 2): CHECKBREAK
0.19% ( 2): OUTPUT
0.10% ( 1): DRAW-LINEAR
0.10% ( 1): D-SUMSIGN
0.48% ( 5): EXPLODEN
0.10% ( 1): CNTP
0.10% ( 1): LEARN
0.10% ( 1): LIKE
0.10% ( 1): DEQ
0.10% ( 1): TESTA*
0.10% ( 1): E1-
0.10% ( 1): PSTIMES
0.19% ( 2): PSEXPT1
0.10% ( 1): GET-ARRAY-POINTER
0.10% ( 1): SIMPLIM%INVERSE_JACOBI_DS
0.10% ( 1): %$ETEST
Total ticks 1031
134522412
f) I'd like suggestions on how to improve the usability here.
3) The gprof mode will require a bit more work, as recent gprof in
Linux calls monstartup authmatically in gcrt0.o, foiling the
existing strategy in the code.
Take care,
--
Camm Maguire address@hidden
==========================================================================
"The earth is but one country, and mankind its citizens." -- Baha'u'llah
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Camm Maguire <=