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[CRYPTO] tcrypt: Speed benchmark support for digest algorithms
This patch adds speed tests (benchmarks) for digest algorithms. Tests are run with different buffer sizes (16 bytes, ... 8 kBytes) and with each buffer multiple tests are run with different update() sizes (e.g. hash 64 bytes buffer in four 16 byte updates). There is no correctness checking of the result and all tests and algorithms use the same input buffer. Signed-off-by: Michal Ludvig <michal@logix.cz> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Michal Ludvig
Herbert Xu
parent
14fdf477a7
commit
e805792851
2 changed files with 206 additions and 0 deletions
170
crypto/tcrypt.c
170
crypto/tcrypt.c
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@ -570,6 +570,122 @@ out:
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crypto_free_tfm(tfm);
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}
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static void test_digest_jiffies(struct crypto_tfm *tfm, char *p, int blen,
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int plen, char *out, int sec)
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{
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struct scatterlist sg[1];
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unsigned long start, end;
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int bcount, pcount;
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for (start = jiffies, end = start + sec * HZ, bcount = 0;
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time_before(jiffies, end); bcount++) {
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crypto_digest_init(tfm);
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for (pcount = 0; pcount < blen; pcount += plen) {
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sg_set_buf(sg, p + pcount, plen);
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crypto_digest_update(tfm, sg, 1);
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}
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/* we assume there is enough space in 'out' for the result */
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crypto_digest_final(tfm, out);
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}
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printk("%6u opers/sec, %9lu bytes/sec\n",
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bcount / sec, ((long)bcount * blen) / sec);
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return;
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}
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static void test_digest_cycles(struct crypto_tfm *tfm, char *p, int blen,
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int plen, char *out)
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{
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struct scatterlist sg[1];
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unsigned long cycles = 0;
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int i, pcount;
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local_bh_disable();
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local_irq_disable();
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/* Warm-up run. */
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for (i = 0; i < 4; i++) {
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crypto_digest_init(tfm);
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for (pcount = 0; pcount < blen; pcount += plen) {
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sg_set_buf(sg, p + pcount, plen);
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crypto_digest_update(tfm, sg, 1);
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}
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crypto_digest_final(tfm, out);
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}
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/* The real thing. */
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for (i = 0; i < 8; i++) {
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cycles_t start, end;
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crypto_digest_init(tfm);
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start = get_cycles();
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for (pcount = 0; pcount < blen; pcount += plen) {
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sg_set_buf(sg, p + pcount, plen);
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crypto_digest_update(tfm, sg, 1);
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}
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crypto_digest_final(tfm, out);
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end = get_cycles();
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cycles += end - start;
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}
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local_irq_enable();
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local_bh_enable();
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printk("%6lu cycles/operation, %4lu cycles/byte\n",
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cycles / 8, cycles / (8 * blen));
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return;
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}
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static void test_digest_speed(char *algo, unsigned int sec,
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struct digest_speed *speed)
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{
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struct crypto_tfm *tfm;
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char output[1024];
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int i;
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printk("\ntesting speed of %s\n", algo);
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tfm = crypto_alloc_tfm(algo, 0);
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if (tfm == NULL) {
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printk("failed to load transform for %s\n", algo);
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return;
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}
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if (crypto_tfm_alg_digestsize(tfm) > sizeof(output)) {
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printk("digestsize(%u) > outputbuffer(%zu)\n",
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crypto_tfm_alg_digestsize(tfm), sizeof(output));
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goto out;
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}
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for (i = 0; speed[i].blen != 0; i++) {
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if (speed[i].blen > TVMEMSIZE) {
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printk("template (%u) too big for tvmem (%u)\n",
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speed[i].blen, TVMEMSIZE);
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goto out;
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}
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printk("test%3u (%5u byte blocks,%5u bytes per update,%4u updates): ",
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i, speed[i].blen, speed[i].plen, speed[i].blen / speed[i].plen);
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memset(tvmem, 0xff, speed[i].blen);
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if (sec)
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test_digest_jiffies(tfm, tvmem, speed[i].blen, speed[i].plen, output, sec);
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else
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test_digest_cycles(tfm, tvmem, speed[i].blen, speed[i].plen, output);
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}
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out:
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crypto_free_tfm(tfm);
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}
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static void test_deflate(void)
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{
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unsigned int i;
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@ -1086,6 +1202,60 @@ static void do_test(void)
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des_speed_template);
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break;
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case 300:
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/* fall through */
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case 301:
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test_digest_speed("md4", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 302:
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test_digest_speed("md5", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 303:
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test_digest_speed("sha1", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 304:
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test_digest_speed("sha256", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 305:
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test_digest_speed("sha384", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 306:
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test_digest_speed("sha512", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 307:
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test_digest_speed("wp256", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 308:
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test_digest_speed("wp384", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 309:
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test_digest_speed("wp512", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 310:
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test_digest_speed("tgr128", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 311:
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test_digest_speed("tgr160", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 312:
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test_digest_speed("tgr192", sec, generic_digest_speed_template);
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if (mode > 300 && mode < 400) break;
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case 399:
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break;
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case 1000:
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test_available();
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break;
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@ -65,6 +65,11 @@ struct cipher_speed {
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unsigned int blen;
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};
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struct digest_speed {
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unsigned int blen; /* buffer length */
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unsigned int plen; /* per-update length */
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};
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/*
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* MD4 test vectors from RFC1320
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*/
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@ -2975,4 +2980,35 @@ static struct cipher_speed des_speed_template[] = {
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{ .klen = 0, .blen = 0, }
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};
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/*
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* Digest speed tests
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*/
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static struct digest_speed generic_digest_speed_template[] = {
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{ .blen = 16, .plen = 16, },
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{ .blen = 64, .plen = 16, },
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{ .blen = 64, .plen = 64, },
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{ .blen = 256, .plen = 16, },
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{ .blen = 256, .plen = 64, },
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{ .blen = 256, .plen = 256, },
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{ .blen = 1024, .plen = 16, },
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{ .blen = 1024, .plen = 256, },
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{ .blen = 1024, .plen = 1024, },
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{ .blen = 2048, .plen = 16, },
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{ .blen = 2048, .plen = 256, },
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{ .blen = 2048, .plen = 1024, },
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{ .blen = 2048, .plen = 2048, },
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{ .blen = 4096, .plen = 16, },
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{ .blen = 4096, .plen = 256, },
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{ .blen = 4096, .plen = 1024, },
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{ .blen = 4096, .plen = 4096, },
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{ .blen = 8192, .plen = 16, },
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{ .blen = 8192, .plen = 256, },
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{ .blen = 8192, .plen = 1024, },
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{ .blen = 8192, .plen = 4096, },
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{ .blen = 8192, .plen = 8192, },
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/* End marker */
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{ .blen = 0, .plen = 0, }
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};
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#endif /* _CRYPTO_TCRYPT_H */
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