Nov
01
2017
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Samsung now offers an Enterprise Edition of the Note 8 for business

 The push to let employees bring their own devices to work has been underway for some time now — in fact, it’s a big part of what ultimately doomed enterprise-focused companies like BlackBerry’s hardware businesses. Samsung’s been walking the line for a while as well, rolling out enterprise features like Knox security for its consumer handsets, along with accessories… Read More

Mar
02
2017
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New skimmers fit right on top of chip and PIN credit card scanners

ped3-copy-940x698 As usual Mr. Krebs has some great images of a credit card skimmer found in the wild. This model uses Samsung phone parts and lays right over the Ingenico card scanners you’ve probably seen in stores. The interesting thing is that these scanners also support chip and PIN technology but, as evidenced by the photo, it looks like the retailer disabled it essentially sending the scanner back… Read More

Nov
16
2016
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Google signs on to the .NET Foundation as Samsung brings .NET support to Tizen

2016-11-15_1502 Microsoft is hosting its annual Connect(); developer event in New York today. With .NET being at the core of many of its efforts, including on the open-source side, it’s no surprise that the event also featured a few .NET-centric announcements, as well. For the most part, these center around the .NET Foundation, the open-source organization Microsoft established to guide the future… Read More

Oct
27
2016
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Samsung acquires Tachyon to extend enterprise mobile device management

samsung-AP-sm Samsung’s mobile operation has taken a big hit of late, with profits plunging 30% in the last quarter in the wake of the Note 7 recall. But today, the company is announcing an acquisition of a wireless enterprise startup that speaks to how it wants to grow other areas of its business to offset setbacks like this, as well as the larger overall slowdown in handset sales globally. Samsung… Read More

Jul
26
2016
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Testing Samsung storage in tpcc-mysql benchmark of Percona Server

tpcc-mysql benchmark

This blog post will detail the results of Samsung storage in

tpcc-mysql

 benchmark using Percona Server.

I had an opportunity to test different Samsung storage devices under tpcc-mysql benchmark powered by Percona Server 5.7. You can find a summary with details here https://github.com/Percona-Lab-results/201607-tpcc-samsung-storage/blob/master/summary-tpcc-samsung.md

I have in my possession:

  • Samsung 850 Pro, 2TB: This is a SATA device and is positioned as consumer-oriented, something that you would use in a high-end user desktop. As of this post, I estimate the price of this device as around $430/TB.
  • Samsung SM8631.92TB: this device is also a SATA, and positioned for a server usage. The current price is about $600/TB. 
  • Samsung PM1725, 800GB: This is an NVMe device, in a 2.5″ form factor, but it requires a connection to a PCIe slot, which I had to allocate in my server. The device is high-end, oriented for server-side and demanding workloads. The current price is about $1300/TB.

I am going to use 1000 warehouses in the 

tpcc-mysql

 benchmarks, which corresponds roughly to a data size of 100GB.

This benchmark varies the

innodb_buffer_pool_size

 from 5GB to 115GB. With 5GB buffer pool size only a very small portion of data fits into memory, which results in intensive foreground IO reads and intensive background IO writes. With 115GB almost all data fits into memory, which results in very small (or almost zero) IO reads and moderate background IO writes.

All buffer pool sizes in the middle of the interval correspond to resulting IO reads and writes. For example, we can see the read to write ratio on the chart below (received for the PM1725 device) with different buffer pool sizes:

tpcc-mysql benchmarks

We can see that for the 5GB buffer pool size we have 56000 read IOPs operations and 32000 write IOPs. For 115GB, the reads are minimal at about 300 IOPS and the background writes are at the 20000 IOPs level. Reads gradually decline with the increasing buffer pool size.

The charts are generated with the Percona Monitoring and Management tools.

Results

Let’s review the results. The first chart shows measurements taken every one second, allowing us to see the trends and stalls.

tpcc-mysql benchmarks

If we take averages, the results are:

tpcc-mysql benchmarks

In table form (the results are in new order transactions per minute (NOTPM)):

bp, GB pm1725 sam850 sam863 pm1725 / sam863 pm1725 / sam850
5 42427.57 1931.54 14709.69 2.88 21.97
15 78991.67 2750.85 31655.18 2.50 28.72
25 108077.56 5156.72 56777.82 1.90 20.96
35 122582.17 8986.15 93828.48 1.31 13.64
45 127828.82 12136.51 123979.99 1.03 10.53
55 130724.59 19547.81 127971.30 1.02 6.69
65 131901.38 27653.94 131020.07 1.01 4.77
75 133184.70 38210.94 131410.40 1.01 3.49
85 133058.50 39669.90 131657.16 1.01 3.35
95 133553.49 39519.18 132882.29 1.01 3.38
105 134021.26 39631.03 132126.29 1.01 3.38
115 134037.09 39469.34 132683.55 1.01 3.40

Conclusion

The Samsung 850 obviously can’t keep with the more advanced SM863 and PM1725. The PM1725 shows a greater benefit with smaller buffer pool sizes. In cases using large amounts of memory, there is practically no difference with SM863. The reason is that with big buffer pool sizes, MySQL does not push IO subsystem much to use all the PM1725 performance.

For the reference, my.cnf file is

[mysqld]
datadir=/var/lib/mysql
socket=/tmp/mysql.sock
ssl=0
symbolic-links=0
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
# general
thread_cache_size=2000
table_open_cache = 200000
table_open_cache_instances=64
back_log=1500
query_cache_type=0
max_connections=4000
# files
innodb_file_per_table
innodb_log_file_size=15G
innodb_log_files_in_group=2
innodb_open_files=4000
innodb_io_capacity=10000
loose-innodb_io_capacity_max=12000
innodb_lru_scan_depth=1024
innodb_page_cleaners=32
# buffers
innodb_buffer_pool_size= 200G
innodb_buffer_pool_instances=8
innodb_log_buffer_size=64M
# tune
innodb_doublewrite= 1
innodb_support_xa=0
innodb_thread_concurrency=0
innodb_flush_log_at_trx_commit= 1
innodb_flush_method=O_DIRECT_NO_FSYNC
innodb_max_dirty_pages_pct=90
join_buffer_size=32K
sort_buffer_size=32K
innodb_use_native_aio=0
innodb_stats_persistent = 1
# perf special
innodb_adaptive_flushing = 1
innodb_flush_neighbors = 0
innodb_read_io_threads = 16
innodb_write_io_threads = 8
innodb_purge_threads=4
innodb_adaptive_hash_index=0
innodb_change_buffering=none
loose-innodb-log_checksum-algorithm=crc32
loose-innodb-checksum-algorithm=strict_crc32
loose-innodb_sched_priority_cleaner=39
loose-metadata_locks_hash_instances=256

Feb
26
2015
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Samsung Filed The Most Patents In Europe In 2014, U.S. Led The Field By Country

4661050938_1f40e33d08_b While IBM is number-one when it comes to the number of patents filed in the U.S., in Europe, Samsung is leading the pack. Today, the European Patent Office released 2014 figures for patents filed in the region, which showed that the Korean company, and currently the world’s largest smartphone maker, filed 2,541 for the full year. In terms of countries, the U.S. dominated the list,… Read More

Feb
25
2015
--

Google Makes A Push For The Mobile Enterprise Market With Launch Of Android For Work

android-work At a small press event in San Francisco today, Google officially launched Android for Work, a set of technologies that makes it easier for companies to adopt Android and allows their users to bring their own devices to work. The company first unveiled a preview of this technology during its I/O developer conference last summer, but as Google’s director for product management for… Read More

Jan
14
2015
--

Samsung Reportedly Approached BlackBerry With A Takeover Bid (Update: BlackBerry Denies)

BlackBerry Classic Front Update: BlackBerry has responded with an official denial of takeover talks, while somewhat paradoxically also claiming it doesn’t comment on rumors or speculation. Full statement below: BlackBerry Limited (NASDAQ:BBRY)(TSX:BB) (“BlackBerry”) is aware of certain press reports published today with respect to a possible offer by Samsung to purchase BlackBerry. BlackBerry has… Read More

Nov
13
2014
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BlackBerry Teams With Samsung To Beef Up Android Security With Knox And BES12

knox BlackBerry is partnering with Samsung to make Android security more robust, using its own Knox solution for Galaxy devices, as well as BES12, BlackBerry’s enterprise device management and enterprise mobility solution. The partnership is significant on both sides, and gives Samsung and BlackBerry a way to dig in and protect market position as Apple and IBM move to own greater share of… Read More

Feb
25
2014
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Samsung Introduces KNOX Marketplace, An Enterprise App Store Powered By AppDirect

Samsung is making a big push with its enterprise market appeal today, thanks to the introduction of the new Samsung KNOX Marketplace. This is a special mobile-focused digital software storefront that offers up business apps, IT provisioning and tools for tech managers working within large organizations. Samsung and partner AppDirect, which powers the marketplace, are aiming to give companies… Read More

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