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Mustafa ERBAY

System architect with 20+ years in infrastructure. Building burncpu.com — an open-source social network. Personal blog: mustafaerbay.com.tr · EN/TR.

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System architect · DevOps · Open-source builder

The 204,800 Everyone Copies Costs 295 MiB of Kernel Memory

The 204,800 Everyone Copies Costs 295 MiB of Kernel Memory

6
Comments
10 min read

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My Runs Took 19 Hours, My Measurement Counted 58,530

My Runs Took 19 Hours, My Measurement Counted 58,530

6
Comments
12 min read
My Notification List Has 94 Rows, 25 Have No App Path

My Notification List Has 94 Rows, 25 Have No App Path

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Comments 2
13 min read
54 of My Apps Carry Intel Code; Two of Them Run It

54 of My Apps Carry Intel Code; Two of Them Run It

8
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13 min read
My Path Check Caught All Six Escapes, Then Let 24,378 Through

My Path Check Caught All Six Escapes, Then Let 24,378 Through

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14 min read
I Documented 29 Keys, Three Systems Lean on One Token

I Documented 29 Keys, Three Systems Lean on One Token

7
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12 min read
I Have 188 Packages, Brew Refuses to Read Two of Them

I Have 188 Packages, Brew Refuses to Read Two of Them

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13 min read
I Broke the Thundering Herd, One Worker Took 99% of Connections

I Broke the Thundering Herd, One Worker Took 99% of Connections

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Comments 1
13 min read
I Moved the Binary Twelve Ways, Six Kept the File Capability

I Moved the Binary Twelve Ways, Six Kept the File Capability

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17 min read
A 9 MiB Clone, Then Checkout Fetched 204 MiB More

A 9 MiB Clone, Then Checkout Fetched 204 MiB More

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Comments 1
13 min read
My Five TODOs Are 160 Days Old; Flutter Wrote the Two That Closed

My Five TODOs Are 160 Days Old; Flutter Wrote the Two That Closed

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Comments 1
11 min read
My Firewall Is Off, 42 of 55 Sockets Unreachable from the Network

My Firewall Is Off, 42 of 55 Sockets Unreachable from the Network

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13 min read
statx Said 512; the Kernel Only Went Direct at 4096

statx Said 512; the Kernel Only Went Direct at 4096

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Comments 1
17 min read
The File Was 99.98% Zeros and fallocate Freed Nothing

The File Was 99.98% Zeros and fallocate Freed Nothing

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Comments 1
13 min read
I Broke Six Rules, All Ninety-Three Tests Stayed Green

I Broke Six Rules, All Ninety-Three Tests Stayed Green

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13 min read
Of My Unindexed Pages, 5,511 Trace Back to My Own Site

Of My Unindexed Pages, 5,511 Trace Back to My Own Site

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11 min read
I Put Five Processes Under One Limit, the Kernel Killed One

I Put Five Processes Under One Limit, the Kernel Killed One

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14 min read
I Queried Eight Subdomains. Seven Don't Exist. All Eight Answered.

I Queried Eight Subdomains. Seven Don't Exist. All Eight Answered.

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16 min read
I Counted 37 Dead References; Only Three Actually Were

I Counted 37 Dead References; Only Three Actually Were

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13 min read
313 Files Carry No Open Stamp, 50 of 87 Opened Within a Minute

313 Files Carry No Open Stamp, 50 of 87 Opened Within a Minute

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12 min read
An Unrelated Rename Broke One in Five of My Hardened Opens

An Unrelated Rename Broke One in Five of My Hardened Opens

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15 min read
I Saved 65.9% on the Data I Trained On, 53.5% on Unseen Data

I Saved 65.9% on the Data I Trained On, 53.5% on Unseen Data

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Comments 1
16 min read
I Cleaned 455 Articles, 474 Numbers Stayed in the English Twin

I Cleaned 455 Articles, 474 Numbers Stayed in the English Twin

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15 min read
If Encryption Came Later, a Factory Reset Isn't Enough

If Encryption Came Later, a Factory Reset Isn't Enough

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12 min read
I Called MADV_FREE on 512 MiB and No Counter Came Down

I Called MADV_FREE on 512 MiB and No Counter Came Down

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13 min read
I Left a Stale .gz and Nginx 1.31.7 Served Two Bodies at One URL

I Left a Stale .gz and Nginx 1.31.7 Served Two Bodies at One URL

3
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14 min read
I Rewrote 167 of My 357 Fixes, 52 Within the Hour

I Rewrote 167 of My 357 Fixes, 52 Within the Hour

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12 min read
I Published a Reading Time 2,680 Times, 618 of Them Add Up

I Published a Reading Time 2,680 Times, 618 of Them Add Up

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14 min read
lazytime Didn't Defer mtime but Took 12 Transactions to Zero on Reads

lazytime Didn't Defer mtime but Took 12 Transactions to Zero on Reads

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13 min read
I Filled sqlite_stat1 and Six Query Plans Did Not Change

I Filled sqlite_stat1 and Six Query Plans Did Not Change

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17 min read
No Code Calls Nineteen of My Scripts, Nobody Calls Nine

No Code Calls Nineteen of My Scripts, Nobody Calls Nine

3
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14 min read
My Site Serves 4,008 Recommendations, Never Names 537 Posts

My Site Serves 4,008 Recommendations, Never Names 537 Posts

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13 min read
rq_affinity: 0 and 1 Looked the Same, Only 2 Moved Completions

rq_affinity: 0 and 1 Looked the Same, Only 2 Moved Completions

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13 min read
I Grew a File to 5,000 Bytes, nginx Sent 100

I Grew a File to 5,000 Bytes, nginx Sent 100

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Comments 2
20 min read
Seven Sources Return 404, Seventy-Five Changed Address

Seven Sources Return 404, Seventy-Five Changed Address

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11 min read
I Deleted 18 Apps; 661 MiB of Data Stayed on Disk

I Deleted 18 Apps; 661 MiB of Data Stayed on Disk

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16 min read
I Blew Past CommitLimit With 24 GiB and Nobody Stopped Me

I Blew Past CommitLimit With 24 GiB and Nobody Stopped Me

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15 min read
Git Wrote the Graph — I Taught It to Skip 3,287 Commits

Git Wrote the Graph — I Taught It to Skip 3,287 Commits

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14 min read
I Audited My Watchdogs: 1,973 Runs, 15 Lines in the Logbook

I Audited My Watchdogs: 1,973 Runs, 15 Lines in the Logbook

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13 min read
My Mac Remembers Fifteen Days, Only 3.7 Are Documented

My Mac Remembers Fifteen Days, Only 3.7 Are Documented

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15 min read
I Gave the Container 64 MiB, Hugepages Took 400 MiB

I Gave the Container 64 MiB, Hugepages Took 400 MiB

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15 min read
wal_checkpoint Counted 15,000 Frames, Moved Zero

wal_checkpoint Counted 15,000 Frames, Moved Zero

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15 min read
Seven Claims in My Recipe Get the Code Wrong

Seven Claims in My Recipe Get the Code Wrong

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13 min read
1.19 Million Files in My Home Directory Are Outside Search

1.19 Million Files in My Home Directory Are Outside Search

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12 min read
I Cut Requests 31x, the IOPS Ceiling Did Not Budge

I Cut Requests 31x, the IOPS Ceiling Did Not Budge

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11 min read
NODE_COMPILE_CACHE Halved tsc Startup, Not Type-Checking

NODE_COMPILE_CACHE Halved tsc Startup, Not Type-Checking

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13 min read
I Merged Before the Review Ended, and Missed Three Findings

I Merged Before the Review Ended, and Missed Three Findings

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13 min read
My Bots Made 433 of the Night's Commits

My Bots Made 433 of the Night's Commits

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12 min read
Ten Values for tcp_adv_win_scale, One Window: 31,856 Bytes

Ten Values for tcp_adv_win_scale, One Window: 31,856 Bytes

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16 min read
I Asked for Three Lines, Git Walked 36,811 Entries

I Asked for Three Lines, Git Walked 36,811 Entries

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17 min read
I Silenced the Conflict, Ten Records Never Came Back

I Silenced the Conflict, Ten Records Never Came Back

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13 min read
I Own 146 Directories and Can't Open a Single One

I Own 146 Directories and Can't Open a Single One

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Comments 1
14 min read
A Neighboring Container Shrank My Pipes Eightfold

A Neighboring Container Shrank My Pipes Eightfold

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15 min read
Two Hundred MiB Fit Inside a Hundred MiB Limit

Two Hundred MiB Fit Inside a Hundred MiB Limit

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18 min read
Thirty-Six Pairs Would Fail the Gate, All Still Live

Thirty-Six Pairs Would Fail the Gate, All Still Live

8
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15 min read
Eight Rows Were Blocking Sleep. None Survive a Closed Lid.

Eight Rows Were Blocking Sleep. None Survive a Closed Lid.

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13 min read
CPU Quota Does Not Look at Your Average

CPU Quota Does Not Look at Your Average

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14 min read
I Could Not Turn On Journal Sealing; Only the Debug Log Said Why

I Could Not Turn On Journal Sealing; Only the Debug Log Said Why

2
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14 min read
I Trust 158 Root Certificates. I Installed Three of Them

I Trust 158 Root Certificates. I Installed Three of Them

9
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11 min read
Forty-Four Posts in a Row From One Category, a Reader Caught It

Forty-Four Posts in a Row From One Category, a Reader Caught It

8
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14 min read
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