databricks delta

Install Yum install-y sysstatSar-d 1 1 RRQM/S: The number of read operations per second for the merge. Delta (rmerge)/s wrqm/s: The number of write operations per second for the merge. Delta (wmerge)/s r/s: Number of Read I/O devices completed per second. Delta (RIO)/s w/s: Number of write I/O devices completed per second.

substitute it into the function, the extreme value of the function can be obtained.Similarly, we now require the Extreme Value of J θ, so we need to first make J θ about the partial derivative of θ, or about θ 0, θ 1, θ 2 ,... the partial derivative of θ n is 0. The partial derivative of J θ j is: \ [\ Frac {\ delta J }}{{ \ delta {\ theta _ j }}=\ frac {1} {m} \ sum \ limits _ {I = 1} ^ m {({x ^ {(I) T }}

about 1MB. iostat-d-x-k 1device:rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkb/s wkb/s avgrq-sz avgqu-sz await SVCTM%utilSDA 1.56 28.31 7.84 31.50 43.65 3.16 21.82 1.58 1.19 0.03 0.80 2.61 10.29SDA 1.98 24.75 419.80 6.93 13465.35 253.47 6732.67 126.73 32.15 2.00 4.70 2.00 85.25SDA 3.06 41.84 444.90 54.08 14204.08 2048.98 7102.04 1024.49 32.57 2.10 4.21 1.85 92.24 You can see the average response time of the disk Extended:rrqm/s:The number of read operations for the merge per second.

CentOS view CPU, memory, network traffic, and disk I/O installation yum install-y sysstat sar-d 1 1 rrqm/s: the number of merge read operations per second. That is, delta (rmerge)/swrqm/s: Number of merge write operations per second. Delta (wmerge)/sr/s: the number of read I/O devices per second. That is, delta (rio)/sw/s: the number of write I/O devices complete

Install unzip at in CentOS source code Install unzip at in source code: # Wget http://perso.orange.fr/sebastien.godard/sysstat-8.0.4.1.tar.gz# Tar zxvf sysstat-8.0.4.1.tar.gz# Cd sysstat-8.0.4.1#./Configure# Make# Make install Use iostat to analyze servers under too much pressure: $ Iostat-x 1Linux 2.6.33-fukai (fukai-laptop) _ i686 _ (2 CPU)Avg-cpu: % user % nice % system % iowait % steal % idle5.47 0.50 8.96 48.26 0.00 36.82Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await sv

The latest I/O statistics Tool in CentOS As a Linux system administrator, it is essential to count various types of IO. Iostat is obviously the most important statistical tool. However, iostat is not the focus of this article, because there are already a lot of tutorials on the network for your reference. Here, I want to introduce some other statistical tools to meet different requirements.Iostat Iostat is exceptionally powerful and has many output items, as shown in the following example: 123 D

table. The effect is to place the end date of the data with the end date greater than the load date and not the maximum date to the maximum date. Make it effectiveUpdate set end_dt= $max _dt where End_dt >= $tx _date and End_dt 3. Create a temporary table for storing data extracted from the source tableCreate multiset volatile table new;4. Create a temporary delta table for storing incremental dataCreate multiset volatile Table Inc;5, according to ce

: The number of read operations per second for the merge. That is Delta (rmerge)/s WRQM/S: The number of write operations per second for the merge. That is, Delta (wmerge)/s R/S: Number of Read I/O devices completed per second. Delta (RIO)/s W/S: Number of write I/O devices completed per second. Delta (WIO)

exclusive with-c option.The-X device output specifies the disk device name to be counted, and defaults to all disk devices.-interval: Refers to two times of statistical interval-Count: The number of times that are counted according to the time interval specified by interval%usr: Percentage of CPU time consumed by the user process.%nice: The percentage of CPU time that is consumed by running the normal process.%system: The percentage of CPU time that the system process consumes.%iowait:i/o the p

Linux system has a performance problem, generally we can use Top.iostat,vmstat and other commands to view the initial location problem. 1. Top top-16:50:36up1day, 4:59,2users,loadaverage:0.06,0.08,0.08tasks: 159total,1running,158sleeping,0stopped , 0zombiecpu (s): 0.2%us,0.1%sy,0.0%ni,99.8%id, 29.6%wa,0.0%hi,0.0%si,0.0%stMem:16332240k Total,5605800kused,10726440kfree,377964kbuffersswap: 1048572ktotal,10144kused,1038428kfree, 2244152kcached View 29.6% WA The percentage of CPU time consumed by IO

0.02 0.00 0.00 99.67Percentage of CPU time%user users%nice Nice is the percentage of CPU time for negative processes%sys the percentage of CPU time that the system core occupies%iowait the percentage of CPU time that the I/O waits%idle percentage of CPU idle timeINTR/S number of interrupts received per second CPU4. Iostat command: View disk I/O statusLinux 2.6.32-131.0.15.el6.x86_64 (Localhost.localdomain) April 20, 2015 _x86_64_ (4 CPU) Avg-cpu: %user %nice% System%iowait %steal

?The change of weights \ (w^{(l)}_{ij}\) in the neural network will affect the next layer, reaching the output layer, and finally affecting the cost function.?\ (\color{red}{formula derivation symbol description}\) symbols Description \ (n_l\) Number of network layers \ (y_j\) Output Layer section \ (j\) class label \ (s_l\) Number of neurons ( l\) layer (excluding bias) \ (g (x) \) Excitation

0.00 33.33 33.33 0.00Sda5 0.01 1.59 0.03 0.51 0.34 8.40 32.20 0.00 1.19 0.58 0.03Sda6 0.00 0.00 0.00 0.12 0.00 0.48 8.18 0.00 5.02 4.53 0.05SDA7 0.00 0.00 0.00 0.00 0.00 0.00 45.00 0.00 5.52 3.04 0.00SDA8 0.00 0.00 0.00 0.00 0.00 0.00 40.88 0.00 7.62 6.03 0.00SDA9 0.00 0.00 0.00 0.00 0.00 0.00 39.71 0.00 7.37 5.83 0.00SDA10 0.00 0.00 0.00 0.00 0.00 0.00 37.57 0.00 5.70 3.54 0.00SDA11 0.00 11.74 0.01 0.76 0.08 49.97 131.48 0.01 10.74 0.57 0.04SDB 0.01 3.91 20.24 20.21 1262.95 1853.94 154.09 0.52

This article mainly introduces a simple example of a JS mouse pulley scrolling Event binding (compatible with mainstream browsers). Need friends can come to the reference, I hope to help you. nbsp; Code as follows:/** event handler for mouse wheel event.nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;* Mouse scrolling event nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;*/nbsp; nbsp; nbsp; nbsp; nbsp; var wheel = function (event) {nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; var delta