May 24, 2012

Comment: Testing Fusion-io ioDrive2 Duo

I actually requested pricing just last week, here are the numbers I received: 365GB MLC = $5,950 785GB MLC = $9,950 1.2TB MLC = $13,900 2.4TB Duo MLC = $28,500

Comment: Percona Replication Manager, a solution for MySQL high availability with replication using Pacemaker

… “CHANGE MASTER TO MASTER_HOST=” ” will make an error and stop this script. As I can see, Yves fixed this in…

Comment: How to change innodb_log_file_size safely

… tried innodb_log_file_size = 64MB Then: /sbin/service mysqld stop Then rename the logfiles: mv ib_logfile0 ib_logfile0.bak…

Comment: Moving Subtrees in Closure Table Hierarchies

… more or less in the future. How can reordered the receive data correctly to do so ? I saw the article with…

Comment: What to tune in MySQL Server after installation

… are several queries with while loop in my application. I request to all please help me to resolve the issue. I…

Post: Testing STEC SSD MACH16 200GB SLC

…=${size}G –file-test-mode=rndwr –max-time=18000 –max-requests=0 –num-threads=$numthreads –rand-init=on –file-num=64…

Post: Testing Samsung SSD SATA 256GB 830 - not all SSD created equal

…=${size}G –file-test-mode=rndwr –max-time=18000 –max-requests=0 –num-threads=$numthreads –rand-init=on –file-num=64…

Comment: Percona XtraDB Cluster Feature 2: Multi-Master replication

… 14:14:26 [Note] WSREP: Node 1 (ubuntu-server-129) requested state transfer from ‘*any*’. Selected 0 (ubuntu-server-128)(SYNCED… ubuntu-server-129 mysqld: 120401 14:14:26 [Note] WSREP: Requesting state transfer: success, donor: 0 Apr 1 14:14:27… ubuntu-server-129 mysqld: 120401 14:14:27 [Note] WSREP: Received SST: 8630f2a8-7be8-11e1-0800-7e1ae413f999:5010 Apr 1 14…

Post: Introducing new type of benchmark

… Queueing theory. In short we can assume that users send requests with some arrival rate (which can be different in the…, but they all are idle until asked to handle a request Benchmarks generates transactions with a given rate, i.e. M… response time grows linearly up to ~30 sec, where benchmark stops, because the queue is full. I am looking for your…

Comment: Percona XtraDB Cluster Feature 1: High Availability

Also to mention, if mysql replication on the cluster node (the slave) had any problem (dup key or something like that), after fix the replication, this node will NOT distribute/receive transactions within the cluster. No errors until reboot.