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Groups > linux.kernel > #1268881
| From | Baolin Wang <baolin.wang@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 0/2] Introduce the request handling for dm-crypt |
| Date | 2015-11-13 12:40 +0100 |
| Message-ID | <qukRY-5MX-9@gated-at.bofh.it> (permalink) |
| References | <qtA2K-Xz-15@gated-at.bofh.it> <qtZDQ-z5-13@gated-at.bofh.it> <qubYm-gb-5@gated-at.bofh.it> <quiwN-4sk-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 13 November 2015 at 17:05, Arnd Bergmann <arnd@arndb.de> wrote: > On Friday 13 November 2015 10:05:28 Baolin Wang wrote: >> >> Well, I did a simple test with dd reading, cause my engine limitation is 1M, >> (1) so the time like below when handle 1M at one time. >> 1048576 bytes (1.0 MB) copied, 0.0841235 s, 12.5 MB/s >> 1048576 bytes (1.0 MB) copied, 0.0836294 s, 12.5 MB/s >> 1048576 bytes (1.0 MB) copied, 0.0836526 s, 12.5 MB/s >> >> (2) These handle 64K at one time * 16 times >> 1048576 bytes (1.0 MB) copied, 0.0937223 s, 11.2 MB/s >> 1048576 bytes (1.0 MB) copied, 0.097205 s, 10.8 MB/s >> 1048576 bytes (1.0 MB) copied, 0.0935884 s, 11.2 MB/s >> >> Here is a 10ms level difference, try to image if the hardware engine's >> throughput is bigger than that. But like Jens said, we can measure it >> by the performance data. > > The absolute numbers look really low. Does this include writing to > a hard drive? That would certainly make the difference appear > less significant. > OK, I'll supply the complete performance data to measure it. > Could you try backing this with a ram disk backing for comparison, > and also use 'time dd' to show the CPU utilization for all cases? > For completeness, including cpu-only performance might also help > put this into perspective. > OK, I'll try. Thanks. > Arnd -- Baolin.wang Best Regards -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-11 10:40 +0100
[PATCH 1/2] block: Introduce BIO_ENDIO_FREE for bio flags Baolin Wang <baolin.wang@linaro.org> - 2015-11-11 10:40 +0100
Re: [PATCH 1/2] block: Introduce BIO_ENDIO_FREE for bio flags Mike Snitzer <snitzer@redhat.com> - 2015-11-11 19:00 +0100
Re: [PATCH 1/2] block: Introduce BIO_ENDIO_FREE for bio flags Baolin Wang <baolin.wang@linaro.org> - 2015-11-12 05:10 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Christoph Hellwig <hch@infradead.org> - 2015-11-11 10:50 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-12 03:20 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Jan Kara <jack@suse.cz> - 2015-11-12 10:20 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-12 10:50 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Jan Kara <jack@suse.cz> - 2015-11-12 12:10 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-12 12:50 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Jan Kara <jack@suse.cz> - 2015-11-12 13:30 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Arnd Bergmann <arnd@arndb.de> - 2015-11-12 14:00 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Mark Brown <broonie@kernel.org> - 2015-11-12 16:10 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-13 04:30 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-13 04:30 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-12 14:00 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Jan Kara <jack@suse.cz> - 2015-11-12 14:00 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-13 03:10 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Arnd Bergmann <arnd@arndb.de> - 2015-11-13 10:10 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-13 12:40 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Mike Snitzer <snitzer@redhat.com> - 2015-11-11 19:20 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-12 03:40 +0100
Re: [dm-devel] [PATCH 0/2] Introduce the request handling for dm-crypt Christoph Hellwig <hch@infradead.org> - 2015-11-12 10:10 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-12 09:30 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Mark Brown <broonie@kernel.org> - 2015-11-12 11:10 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Jens Axboe <axboe@kernel.dk> - 2015-11-12 16:30 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Baolin Wang <baolin.wang@linaro.org> - 2015-11-13 03:10 +0100
Re: [PATCH 0/2] Introduce the request handling for dm-crypt Mark Brown <broonie@kernel.org> - 2015-11-13 13:00 +0100
Re: [dm-devel] [PATCH 0/2] Introduce the request handling for dm-crypt Christoph Hellwig <hch@infradead.org> - 2015-11-12 10:10 +0100
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