347 reputation
18
bio website
location
age
visits member for 4 years, 2 months
seen Dec 17 '12 at 22:09

Apr
17
comment Sync SSD to spindle drive using RAID or DRBD
He could see a performance hit on random/sequential writes with a fully synchronous setup. SSDs are just absolutely crushing spindled drives in every category including write performance. The only 2 categories HDDs have over SSDs are still price and reliability.
Jan
6
comment How to drop all tables in a MySQL database without dropping the database?
Would you consider revising your answer to include the proper commands and procedure then?
Jan
5
comment How to drop all tables in a MySQL database without dropping the database?
Extremely bad idea for any non-trivial setup as MySQL is not expecting these files to suddenly disappear and could be in the middle of any number of operations, transactions, replication, locks...
Oct
20
comment Delegating Windows permissions to different groups of administrators
@Harvey - As indicated by syneticon-dj it will be MORE work to accomplish what you want with your current configuration and your users will STILL find ways to break out. The most secure, viable path I see is to have 1 role per server.
Oct
19
comment Delegating Windows permissions to different groups of administrators
Can you split the servers so each server does exactly one job? Then you dont have to worry about the DBA accidentally touching the IIS stuff because thats a different server. Virtual servers could help here.
Sep
26
comment What is Linux process 'SMBD' running on my server?
@JM4 - samba is not related to apache at all. You would edit the system startup configuration to disable smbd (and its compliment nmbd).
Aug
24
comment How many partitions should we create if there are around 100 millions rows
@N.B - Its not true that there will be no benefit at all if its all on the same disk. The concept of "partition pruning" can speed up queries dramatically. Smaller per-partition indexes will have another benefit as well. He'll be better off with multiple disks but partitioning is about more than just that.
Jun
2
comment What is a “virtual context switch”
No, I suppose I'm overthinking it. Its exactly like a regular context switch but on a virtual processor. A process running on a VP hasn't completed but the hypervisor is deciding to evict it for another process so must save the state of the first process. Right?
Jun
2
comment What is a “virtual context switch”
So does that mean that when a VP has no more work to do a virtual context switch is recorded when it gives up its remaining time to any other VPs that need it? I'm trying to diagnose what seeing 500,000 (yes half a million) virtual context switches on a badly behaving machine means exactly.
Apr
11
comment Minimum hardware requirements for LAMP server
Something in your requirements doesn't add up. 300 visits per second is 25.9 million a day. Across 10,000 unique visits each visitor is making 2,590 requests. Can we assume you mean the PEAK load is 300 per second? What about the average load? Did you just make up your numbers based on how much traffic you would like to have to your site?
Apr
8
comment What tools exist for identity management w/ Active Directory?
Excellent comment. Due to the varying requirements of systems I've written more than a few scripts and processes to sync these independent systems up with the enterprise LDAP/AD solution and propogate additions and deletions.
Jan
7
comment FreeBSD: Samba performance over GBit-Ethernet
Are you using jumbo frames?
Nov
17
comment Why is it necessary to chmod o+r parent directory to fix 403 access forbidden error with Nginx and Passenger?
Wrong. Unixes know how secondary groups work with permissions. You dont have to sg to get access to files readable only to your secondary groups.
Nov
17
comment Setting up a network for 16 users
I think the op meant 'providing outgoing internet access to each client' not 'providing incoming RDP or VNC access to each client'
Nov
15
comment How to recovery a 5TB raid 5
If the files are worth >$1000 to you, which presumably they are, and you have time I would buy a few 2TB consumer level SATA drives, then use a disk imager (or linux dd) and image each drive individually to the backup drives. Be sure to label/mark them with the exact order they were in in your original array! That way you can "rollback" if your repair efforts only cause more damage.