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seen Mar 9 at 10:21

Mar
14
asked Linux WAN failover simple solution needed
Mar
13
awarded  Teacher
Mar
12
answered Find busiest databases and tables on MySQL server
Mar
9
answered Move HDDs to new hardware
Feb
15
comment Tuning Linux disk caching behaviour for maximum throughput
I have 20GB memory just for buffers, as my applications (base linux + vsftpd) use under 4GB (total 24GB). My backups are unter 20GB. If I can get them written into buffer and then written out to disk sequentially after the backup run, this would reduce the downtime of my backup source (virtual servers) significantly. PS: The server can come to a halt afterwards, no problem. It got 30 minutes to recover :)
Feb
15
awarded  Supporter
Feb
15
awarded  Scholar
Feb
15
accepted Tuning Linux disk caching behaviour for maximum throughput
Feb
15
comment Tuning Linux disk caching behaviour for maximum throughput
The filesystem was created with mkfs.xfs -l lazy-count=1,version=2,size=256m -i attr=2 -d sunit=512,swidth=1024 and is mounted with: rw,noatime,logbufs=8,logbsize=256k,osyncisdsync,delaylog,attr2,nobarrier,allocs‌​ize=256k
Feb
15
comment Tuning Linux disk caching behaviour for maximum throughput
Yes, I'm after write performance. The time it takes to fan out the backup to the backup slaves is none of my concerns. I also have a script in place for retransmission, should the primary backup server fail and the backups dont get through to the backup slaves. PS I've already read the link and tuned accordingly. Sorry for the mistake about free vs buffered vs total.
Feb
15
comment Tuning Linux disk caching behaviour for maximum throughput
@adaptr: Acutally, they are SATA2. And I was able to achieve the named throughput for sequential read/write on 10 Gigabyte files, sustained. I activated the caches in the hard disks and writeback in the controller. This is an unsafe state but as its only for backups that are mirrored out to other backup servers thats not a problem. Maximum throughput for the 10GE pipe is what I need.
Feb
15
comment Tuning Linux disk caching behaviour for maximum throughput
I'm using a heavily tuned XFS. More on in which regard its tuned in the comment above :)
Feb
15
comment Tuning Linux disk caching behaviour for maximum throughput
TOTALLY right. I'm synching virtual machine images (very small ones for compute nodes) which are down while synching. The app works like tar | ssh but using ftp. And well, the simulations need to run ... :)
Feb
15
asked Tuning Linux disk caching behaviour for maximum throughput
Feb
8
awarded  Student
Feb
8
comment View Desktop of all currently logged in Users on Windows Server
It's about viewing the Remote Desktop Sessions, not other sessions. We automated Mouse movement and want to show our "virtual users" working in ... like 4in1 on a Plasma :)
Jan
30
asked View Desktop of all currently logged in Users on Windows Server
Jan
29
answered How to permanently attach USB devices to a KVM vserver?
Jan
28
awarded  Tumbleweed
Jan
21
asked How to permanently attach USB devices to a KVM vserver?