From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1944) id B9F1B385840C; Wed, 4 May 2022 06:00:11 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B9F1B385840C Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Szabolcs Nagy To: glibc-cvs@sourceware.org Subject: [glibc/nsz/bug23293] benchtests: Improve bench-strrchr X-Act-Checkin: glibc X-Git-Author: Noah Goldstein X-Git-Refname: refs/heads/nsz/bug23293 X-Git-Oldrev: 8ea20ee5f6145de4bff9481d3e09ac36ba9df8f3 X-Git-Newrev: c2ff9555a18b84732004d061b1a797ea1a432c6a Message-Id: <20220504060011.B9F1B385840C@sourceware.org> Date: Wed, 4 May 2022 06:00:11 +0000 (GMT) X-BeenThere: glibc-cvs@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Glibc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 May 2022 06:00:11 -0000 https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c2ff9555a18b84732004d061b1a797ea1a432c6a commit c2ff9555a18b84732004d061b1a797ea1a432c6a Author: Noah Goldstein Date: Fri Apr 22 14:11:59 2022 -0500 benchtests: Improve bench-strrchr 1. Use json-lib for printing results. 2. Expose all parameters (before pos, seek_char, and max_char where not printed). 3. Add benchmarks that test multiple occurence of seek_char in the string. Reviewed-by: H.J. Lu Diff: --- benchtests/bench-strrchr.c | 126 +++++++++++++++++++++++++++++---------------- 1 file changed, 82 insertions(+), 44 deletions(-) diff --git a/benchtests/bench-strrchr.c b/benchtests/bench-strrchr.c index abdae60c51..7cd2a15484 100644 --- a/benchtests/bench-strrchr.c +++ b/benchtests/bench-strrchr.c @@ -23,6 +23,7 @@ # define TEST_NAME "strrchr" #endif #include "bench-string.h" +#include "json-lib.h" #define BIG_CHAR MAX_CHAR @@ -53,7 +54,8 @@ SIMPLE_STRRCHR (const CHAR *s, int c) } static void -do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res) +do_one_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s, int c, + CHAR *exp_res) { CHAR *res = CALL (impl, s, c); size_t i, iters = INNER_LOOP_ITERS8; @@ -61,8 +63,8 @@ do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res) if (res != exp_res) { - error (0, 0, "Wrong result in function %s %p %p", impl->name, - res, exp_res); + error (0, 0, "Wrong result in function %s %p %p", impl->name, res, + exp_res); ret = 1; return; } @@ -73,23 +75,25 @@ do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res) CALL (impl, s, c); } TIMING_NOW (stop); - TIMING_DIFF (cur, start, stop); - TIMING_PRINT_MEAN ((double) cur, (double) iters); + json_element_double (json_ctx, (double) cur / (double) iters); } static void -do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char) +do_test (json_ctx_t *json_ctx, size_t align, size_t pos, size_t len, + int seek_char, int max_char, size_t freq) /* For wcsrchr: align here means align not in bytes, but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ { size_t i; + size_t pos_chunk_sz = freq ? (pos / freq) : pos; + size_t last_pos = len; CHAR *result; CHAR *buf = (CHAR *) buf1; - align &= 7; + align &= (getpagesize () - 1); if ((align + len) * sizeof (CHAR) >= page_size) return; @@ -103,6 +107,16 @@ do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char) if ((i > pos || pos >= len) && buf[align + i] == seek_char) buf[align + i] = seek_char + 10 + (random () & 15); } + + if (pos_chunk_sz == 0 && pos) + pos_chunk_sz = 1; + + for (i = pos_chunk_sz; i < pos && i < len; i += pos_chunk_sz) + { + buf[align + i] = seek_char; + last_pos = i; + } + buf[align + len] = 0; if (pos < len) @@ -110,66 +124,90 @@ do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char) buf[align + pos] = seek_char; result = (CHAR *) (buf + align + pos); } + else if (last_pos < len) + result = (CHAR *) (buf + align + last_pos); else if (seek_char == 0) result = (CHAR *) (buf + align + len); else result = NULL; - printf ("Length %4zd, alignment in bytes %2zd:", len, align * sizeof (CHAR)); + json_element_object_begin (json_ctx); + json_attr_uint (json_ctx, "len", len); + json_attr_uint (json_ctx, "pos", pos); + json_attr_uint (json_ctx, "align", align); + json_attr_uint (json_ctx, "freq", freq); + json_attr_uint (json_ctx, "seek", seek_char); + json_attr_uint (json_ctx, "max_char", max_char); + json_array_begin (json_ctx, "timings"); FOR_EACH_IMPL (impl, 0) - do_one_test (impl, (CHAR *) (buf + align), seek_char, result); + do_one_test (json_ctx, impl, (CHAR *) (buf + align), seek_char, result); - putchar ('\n'); + json_array_end (json_ctx); + json_element_object_end (json_ctx); } int test_main (void) { - size_t i; + json_ctx_t json_ctx; + size_t i, j; + int seek; test_init (); + json_init (&json_ctx, 0, stdout); - printf ("%20s", ""); - FOR_EACH_IMPL (impl, 0) - printf ("\t%s", impl->name); - putchar ('\n'); - - for (i = 1; i < 8; ++i) - { - do_test (0, 16 << i, 2048, 23, SMALL_CHAR); - do_test (i, 16 << i, 2048, 23, SMALL_CHAR); - } + json_document_begin (&json_ctx); + json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); - for (i = 1; i < 8; ++i) - { - do_test (i, 64, 256, 23, SMALL_CHAR); - do_test (i, 64, 256, 23, BIG_CHAR); - } + json_attr_object_begin (&json_ctx, "functions"); + json_attr_object_begin (&json_ctx, TEST_NAME); + json_attr_string (&json_ctx, "bench-variant", ""); - for (i = 0; i < 32; ++i) - { - do_test (0, i, i + 1, 23, SMALL_CHAR); - do_test (0, i, i + 1, 23, BIG_CHAR); - } + json_array_begin (&json_ctx, "ifuncs"); + FOR_EACH_IMPL (impl, 0) + json_element_string (&json_ctx, impl->name); + json_array_end (&json_ctx); - for (i = 1; i < 8; ++i) - { - do_test (0, 16 << i, 2048, 0, SMALL_CHAR); - do_test (i, 16 << i, 2048, 0, SMALL_CHAR); - } + json_array_begin (&json_ctx, "results"); - for (i = 1; i < 8; ++i) + for (seek = 0; seek <= 23; seek += 23) { - do_test (i, 64, 256, 0, SMALL_CHAR); - do_test (i, 64, 256, 0, BIG_CHAR); + for (j = 1; j < 32; j += j) + { + for (i = 1; i < 9; ++i) + { + do_test (&json_ctx, 0, 16 << i, 2048, seek, SMALL_CHAR, j); + do_test (&json_ctx, i, 16 << i, 2048, seek, SMALL_CHAR, j); + } + + for (i = 1; i < 8; ++i) + { + do_test (&json_ctx, i, 64, 256, seek, SMALL_CHAR, j); + do_test (&json_ctx, i, 64, 256, seek, BIG_CHAR, j); + + do_test (&json_ctx, i * 15, 64, 256, seek, SMALL_CHAR, j); + do_test (&json_ctx, i * 15, 64, 256, seek, BIG_CHAR, j); + } + + for (i = 0; i < 32; ++i) + { + do_test (&json_ctx, 0, i, i + 1, seek, SMALL_CHAR, j); + do_test (&json_ctx, 0, i, i + 1, seek, BIG_CHAR, j); + do_test (&json_ctx, getpagesize () - i / 2 - 1, i, i + 1, seek, + SMALL_CHAR, j); + } + if (seek == 0) + { + break; + } + } } - for (i = 0; i < 32; ++i) - { - do_test (0, i, i + 1, 0, SMALL_CHAR); - do_test (0, i, i + 1, 0, BIG_CHAR); - } + json_array_end (&json_ctx); + json_attr_object_end (&json_ctx); + json_attr_object_end (&json_ctx); + json_document_end (&json_ctx); return ret; }