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Mold the redbean binary to minimize page faults

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This change brings page faults for precompressed static asset serving
down from 27 to 20 (or fewer) after fork. This is more of an art than
science. Hopefully Blinkenlights can visualize page faults soon.
This commit is contained in:
Justine Tunney 2021-05-03 12:09:35 -07:00
parent 2d34819779
commit e56a9d0e23
14 changed files with 978 additions and 782 deletions
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29
test/libc/nexgen32e/memrchr_test.c Normal file
View file

@ -0,0 +1,29 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2021 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/nexgen32e/nexgen32e.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
TEST(memrchr, test) {
EXPECT_STREQ(".there", memrchr("yo.hi.there", '.', 11));
}
BENCH(memrchr, bench) {
EZBENCH2("memrchr", donothing, EXPROPRIATE(memrchr("yo.hi.there", '.', 11)));
}

27
test/libc/str/memmem_test.c
View file

@ -21,6 +21,8 @@
#include "libc/mem/mem.h"
#include "libc/str/internal.h"
#include "libc/str/str.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/hyperion.h"
#include "libc/testlib/testlib.h"
#define MakeMemory(SL) memcpy(malloc(sizeof(SL) - 1), SL, sizeof(SL) - 1)
@ -60,6 +62,22 @@ TEST(memmem, testEndOfMemory) {
free(needle);
}
TEST(memmem, testOneNo) {
char *needle = MakeMemory("z");
char *haystk = MakeMemory("abc123");
EXPECT_EQ(0, memmem(haystk, 6, needle, 1));
free(haystk);
free(needle);
}
TEST(memmem, testOneYes) {
char *needle = MakeMemory("3");
char *haystk = MakeMemory("abc123");
EXPECT_EQ(&haystk[5], memmem(haystk, 6, needle, 1));
free(haystk);
free(needle);
}
TEST(memmem, testCrossesSseRegister) {
char *needle = MakeMemory("eeeeeeeeeeeeefffffffffffff");
char *haystk = MakeMemory("eeeeeeeeeeeeeeeeffffffffffffffffrrrrrrrrrrrrrrrr");
@ -113,3 +131,12 @@ TEST(memmem, testEmptyHaystackAndNeedle_returnsHaystack) {
TEST(memmem, testWut) {
ASSERT_STREQ("x", memmem("x", 1, "x", 1));
}
BENCH(memmem, bench) {
EZBENCH2("memmem", donothing,
EXPROPRIATE(memmem(kHyperion, kHyperionSize, "THE END", 7)));
EZBENCH2("memmem", donothing,
EXPROPRIATE(memmem(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab",
62, "aaaaaab", 7)));
}

44
test/libc/str/strstr_test.c
View file

@ -46,6 +46,12 @@ TEST(strstr, test_notFound) {
free(haystack);
}
TEST(strstr, test_notFound1) {
MAKESTRING(haystack, "abc123def");
ASSERT_EQ(NULL, strstr(haystack, gc(strdup("x"))));
free(haystack);
}
TEST(strstr, test_middleOfString) {
MAKESTRING(haystack, "abc123def");
ASSERT_STREQ(&haystack[3], strstr(haystack, gc(strdup("123"))));
@ -80,8 +86,40 @@ TEST(strstr, test) {
BENCH(strstr, bench) {
EZBENCH2("strstr", donothing, EXPROPRIATE(strstr(kHyperion, "THE END")));
EZBENCH2("strstr", donothing,
EZBENCH2("strstr torture 1", donothing,
EXPROPRIATE(strstr(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab",
"aaaaaab")));
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab",
"b")));
EZBENCH2("strstr torture 2", donothing,
EXPROPRIATE(strstr(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab",
"ab")));
EZBENCH2("strstr torture 4", donothing,
EXPROPRIATE(strstr(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab",
"aaab")));
EZBENCH2("strstr torture 8", donothing,
EXPROPRIATE(strstr(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab",
"aaaaaaab")));
EZBENCH2("strstr torture 16", donothing,
EXPROPRIATE(strstr(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab",
"aaaaaaaaaaaaaaab")));
EZBENCH2("strstr torture 32", donothing,
EXPROPRIATE(strstr(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab",
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab")));
}