Linked Questions

7
votes
3answers
6k views

Postgres Write Performance on Intel S3700 SSD

I'm not seeing the Postgres write performance increases I thought I would with a single SSD vs a hardware RAID 10 array of (16) 15k RPM SAS drives. I have a Dell R820 with a PERC H700 hardware RAID ...
5
votes
3answers
5k views

How do I determine how much data is being written per day through insert, update and delete operations?

The longevity of SSDs is largely determined by the amount of bytes written by insert, update and delete operations. What is the best way to accurately determine how much data is being written by ...
2
votes
1answer
5k views

Hi disk I/O and crash when turning on sync_binlog in MySQL

I have a MySQL master server (MariaDB 10.0.17) that have a very odd behavior. It has one slave fetching data from it. When I set global sync_binlog = 1, the server I/O goes very high and after some ...
1
vote
3answers
2k views

Does innodb_flush_log_at_trx_commit = 1 wear out SSDs more than innodb_flush_log_at_trx_commit = 2?

I am running a Nextcloud instance and I suffer from a slow sync when a lot of small files are synchronized. I found out that innodb_flush_log_at_trx_commit = 1 is responsible for this so I was forced ...
2
votes
2answers
1k views

Where to place tempdb and logfiles

I have fallowing configuration for my SQL 2014 server: SSD RAID 1 - for data files SSD RAID 1 - for tempdb? logfiles? HDD (SAS 15K) RAID 1 - for tempdb? logfiles? I noticed that sql uses tempdb ...
2
votes
1answer
657 views

How big can innodb_doublewrite_file grow?

When I use the enable innodb_doublewrite_file ... How big can this file grow ? How can I calculate the optimal disk size, if it would be used only for this file?
1
vote
1answer
813 views

MySQL/Percona Server is taking long and I'd prefer to skip all this waiting even if it means data loss

Originally posted to https://www.facebook.com/groups/GNUAndLinux/permalink/10155020539805019/ but no replies received. I run Percona Server 5.6.21-70.0-688 x64 on Ubuntu Server 12.04 LTS x64, 64GB ...
3
votes
2answers
363 views

Should the Redo log on a production MySQL server be configured to another location?

Concerning the innoDB storage engine, should the innodb_log_group_home_dir option (The directory path to the InnoDB log files) be configured to another disk, other than the default directory, in order ...
5
votes
1answer
251 views

What is the best storing device for DB transaction log?

I'm using MySQL with InnoDB storing engine. Transactional log is placed to dedicated HDD. Still as it is HDD atopsar shows big load (>50%) to this HDD because of big amount of small IOs (about 50 ...
0
votes
2answers
393 views

Multiple Schemas for increasing MySQL (5.7) Performance

Lets start with my question first: Does having multiple schemas (1 main and 1 daily - having 5-6 tables with same structure as main, but only working for the day and will be synced back with the main ...
2
votes
1answer
182 views

Wordpress blog where pages are almost-always served from cache: SSD or more RAM?

I am working on the design of a Wordpress blog which when finished will almost-always serve pages from disk cache and this is because all posts will be published in batch and then cached, with at ...
1
vote
2answers
99 views

MySQL Drive Storage Allocation

In our production servers for SQL Server, we usually split our drives by Software, Logs, Data, and Backups. I've been assigned to help with a MySQL installation (On Windows Server) and I'm not as ...