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Linux Mastering Development

Output from Bonnie++ doesn’t match up

I just ran bonnie++ ten times to test the performance of a file server. After removing the verbose output this is what remains: format_version,bonnie_version,name,concurrency,seed,file_size,io_chunk_size,putc,putc_cpu,put_block,put_block_cpu,rewrite,rewrite_cpu,getc,getc_cpu,get_block,get_block_cpu,seeks,seeks_cpu,num_files,max_size,min_size,num_dirs,file_chunk_size,seq_create,seq_create_cpu,seq_stat,seq_stat_cpu,seq_del,seq_del_cpu,ran_create,ran_create_cpu,ran_stat,ran_stat_cpu,ran_del,ran_del_cpu,putc_latency,put_block_latency,rewrite_latency,getc_latency,get_block_latency,seeks_latency,seq_create_latency,seq_stat_latency,seq_del_latency,ran_create_latency,ran_stat_latency,ran_del_latency 1.98,1.98,15.local,1,1602631781,8G,,8192,5,901,93,45205,13,23092,10,1162,90,66262,8,369.7,16,1,,,,100,18,1,360,4,21,0,18,1,542,4,20,0,12295us,665ms,1903ms,48384us,1944ms,5397ms,1652ms,13917us,2866ms,507ms,4953us,803ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,891,93,46620,14,23701,10,1177,90,66461,8,674.0,15,1,,,,100,18,1,406,4,22,0,18,1,559,4,23,0,12010us,1415ms,1264ms,52618us,496ms,69643us,1267ms,10064us,515ms,958ms,4650us,829ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,909,93,47824,14,21431,9,1147,88,67050,8,754.3,17,1,,,,100,20,1,400,4,19,0,14,1,530,3,20,0,11888us,1177ms,2710ms,45197us,1021ms,127ms,398ms,4562us,2874ms,1317ms,4810us,1006ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,890,91,37540,12,21765,9,1183,90,66822,8,1419,22,1,,,,100,19,1,461,3,23,0,19,1,547,3,19,0,11992us,548ms,864ms,46664us,480ms,25566us,760ms,44844us,1036ms,704ms,4778us,6449ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,795,83,43425,13,23066,10,1218,93,938042,27,1282,17,1,,,,100,19,1,406,4,21,0,18,1,560,4,23,0,53141us,14308ms,2786ms,39855us,71572us,6216ms,1761ms,6592us,1224ms,511ms,4654us,504ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,870,91,37339,11,21559,9,1187,91,924835,26,1499,19,1,,,,100,20,1,401,5,25,1,19,1,545,4,20,0,11615us,907ms,1870ms,44530us,352ms,1694us,626ms,4660us,359ms,659ms,5166us,972ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,881,93,37399,11,22194,9,1199,92,66756,8,1341,21,1,,,,100,17,1,409,4,20,0,17,1,557,4,23,0,11831us,1334ms,1113ms,45929us,579ms,29992us,4185ms,4348us,985ms,521ms,4889us,442ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,879,92,37592,12,21603,9,1208,93,4320730,99,1485,18,1,,,,100,17,1,403,4,22,0,16,1,570,3,19,0,11683us,665ms,1118ms,23421us,158us,5495ms,1623ms,4401us,592ms,863ms,10107us,1072ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,879,92,37386,11,21728,9,1168,90,554500,18,1516,19,1,,,,100,19,1,410,4,25,1,18,1,553,3,27,1,11325us,1617ms,1546ms,42335us,476ms,1812us,681ms,4294us,357ms,870ms,4776us,261ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,850,92,37915,11,21600,9,1159,88,141678,10,1513,20,1,,,,100,20,1,403,5,22,0,16,1,604,3,22,0,12674us,1461ms,1496ms,62742us,382ms,123ms,786ms,5874us,690ms,956ms,5011us,795ms but pasting this into a spread sheet results in missing columns (there are two header columns fewer than there are data […]

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Mastering Development

Fast way to remove array of specific row values from 2D numpy array

I have a 2D array like this: a = np.array([[25, 83, 18, 71], [75, 7, 0, 85], [25, 83, 18, 71], [25, 83, 18, 71], [75, 48, 8, 43], [ 7, 47, 96, 94], [ 7, 47, 96, 94], [56, 75, 50, 0], [19, 49, 92, 57], [52, 93, 58, 9]]) and I want to […]

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Mastering Development

Finding the shortest distance between clusters

I have 10 data points in a 2D array: array([[74, 89], [31, 55], [89, 74], [73, 20], [95, 35], [93, 82], [47, 81], [21, 83], [78, 54], [39, 45]]) I calculated their distance from each other using sklearn NearestNeighbors. I also clustered them into 5 clusters. My distance array looks like this: array([[ 0. , […]

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Mastering Development

Neural Network ValueError

I am currently trying to run a neural network to predict whether a given house is above or below the median housing value. I have six inputs which include square feet, number of bedrooms, number of bathrooms, number of garage spaces, etc. The response variable is a binary variable indicated whether the price is below […]

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Mastering Development

How to manipulate the n.label values with paste0() for the number of observations using the plotmean() function in the gplot() package in R

Problem: I have a data frame called FID and I want to label the number of observations for each mean and the upper and lower confidence intervals. Because the data frame shows the number of observations per month over three years (below), the n.labels are being labelled as n=3 (see figure 1 below). I created […]

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Mastering Development

Object.keys(myObject) returns an arbitrary list of numbers, not expected value

This is a bit of a head-scratcher – and has been a source of pain for the past 3 hours. Here’s my code. const payloadBody = JSON.parse(gatewayEvent.body); console.log(payloadBody); console.log(gatewayEvent.body); console.log(payloadBody.paymentMethodId); console.log(payloadBody[‘paymentMethodId’]); console.log(Object.keys(payloadBody)); If I look at the CloudWatch logs for this (I am executing in Lambda), the line console.log(payloadBody) logs: { "customerId": "cus_REDACTED", "paymentMethodId": "pm_REDACTED", […]

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Ask Chemistry

What are the fragments that result from taking the Mass Spectrum of o-fluronitrobenzene?

I am doing my online lab, and we are on mass spec right now. I am having a very tough time figuring out the shape of the fragments of o-fluronitrobenzene, especially the large peaks. Especially the one at 75, 83, and 111. I have been drawing fragmentation diagrams for a while now, but have come […]

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Ask Chemistry

What are the fragments that result from taking the Mass Spectrum of o-fluronitrobenzene?

I am doing my online lab, and we are on mass spec right now. I am having a very tough time figuring out the shape of the fragments of o-fluronitrobenzene, especially the large peaks. Especially the one at 75, 83, and 111. I have been drawing fragmentation diagrams for a while now, but have come […]

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Mastering Development

filter dateframe by certain date

I have a csv file containing dates in german format: date,D11,D21,D31,D41 19.03.2018 00:00:00,6,4,6,2 19.03.2018 01:00:00,5,8,5,1 20.03.2018 00:00:00,2,2,3,0 20.03.2018 01:00:00,2,5,4,1 21.03.2018 00:00:00,3,7,8,3 21.03.2018 01:00:00,18,22,19,3 22.03.2018 00:00:00,32,69,47,10 22.03.2018 01:00:00,105,105,69,32 23.03.2018 00:00:00,117,134,106,57 23.03.2018 01:00:00,97,83,95,73 I want to get rows by certain dates. In order to get this output: date,D11,D21,D31,D41 21.03.2018 00:00:00,3,7,8,3 21.03.2018 01:00:00,18,22,19,3 I tried this: import pandas […]

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User Help

How to use FILTER function in excel to to exclude certain values?

First, this is becoming very difficult for me to explain, so please bear with me. I want to make it easier to calculate for a puzzle (killer sudokus basically). So I made an excel table for all possible permutations possible with 1 to 9, their sum, and their number of digits. Now I am trying […]