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visits member for 1 year, 11 months
seen Sep 21 at 17:11

Sep
27
answered Disk Cached IO very slow
Sep
27
comment EC2 backup strategy, 2 EBS volumes
Good advice about syncing the MySQL tables to disk. This can be accomplished using the FLUSH TABLES command. Make sure you remember to unlock the tables after you've finished taking the snapshot. Also, the flush command works differently for MyISAM and InnoDB, so make sure you read the documentation and choose the form that applies to your database.
Sep
22
awarded  Teacher
Sep
20
awarded  Editor
Sep
20
revised Poor NFS Performance Using Multiple Disks
Added additional information and links.
Sep
20
answered Poor NFS Performance Using Multiple Disks
Sep
18
comment Poor NFS Performance Using Multiple Disks
Also, if you temporarily disable sync, are you able to get full speed over the network?
Sep
18
comment Poor NFS Performance Using Multiple Disks
What underlying filesystem are you using? ZFS? If so, maybe the ZIL speed is the bottleneck here...
Sep
18
comment Move large (100GB) file to EC2 instance from my colo data center
It's possible that using CIFS/SMB was causing it to use sync writes rather than async, therefore it was waiting for a response after each filesystem block write instead of queuing up a lot at once. FTP transfers work as a stream so it doesn't employ the concept of writing filesystem blocks one by one.
Sep
18
answered Getting the executed source from bash
Jun
15
comment Why are enterprise SAS disk enclosures seemingly so expensive?
@DietrichEpp I legitimately lol'ed at your comment... I was thinking the same thing
Jan
20
awarded  Supporter