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Oct
14
comment What exactly is a “load” when referring to node status of a Compute Cluster?
@JacobHayden: Sorry, to clarify, the number of running and runnable THREADS, not processes. I don't know what you mean by the size of the processes; if you mean memory usage, then no, it doesn't affect the load average.
Oct
14
comment What exactly is a “load” when referring to node status of a Compute Cluster?
@JacobHayden: The number of running and runnable processes averaged over some period of time, typically, 1, 5, 15 minutes.
Oct
10
answered What exactly is a “load” when referring to node status of a Compute Cluster?
Aug
31
comment NFS v3 versus v4
Actually, Linux also defaults to mounting with tcp
Aug
11
answered better TCP performance over a “high delay network”
Jun
15
answered NFS performance troubleshooting
Jun
13
comment Best practices for mounting Sun SAN NFS on Linux (Debian Squeeze)
FWIW, Linux no longer supports the intr option. From nfs(5): "The intr / nointr mount option is deprecated after kernel 2.6.25. Only SIGKILL can interrupt a pending NFS operation on these kernels and if specified, this mount option is ignored to provide backwards compatibility with older kernels."
Jun
12
answered Transfer between internal disks slows down for large files
Jun
8
answered Open source cloud computing with scalable virtual machines
Jun
3
awarded  Yearling
Jun
1
answered Free alternative to NI Real-Time Hypervisor?
Jun
1
comment Free alternative to NI Real-Time Hypervisor?
From the words "real-time" in the name of the product, presumably it offers deterministic interrupt latency which is not something a general purpose OS offers.
May
16
answered compress remotely server folders and files and copy them to my local drive
May
14
answered Why is Apache running so many processes? Excessive RAM here?
May
10
answered Can I use blockdev --setra on a formatted device or exisiting RAID Array?
May
9
answered Can open files be unlinked on NFS mounted volumes while applications that still have them open read/write?
Apr
28
comment How to increase filename size limit on EXT3 (on ubuntu)
On Linux PATH_MAX is 4096. It might be possible to get around that for some syscalls by changing cwd and using relative paths, though. That being said, a redesign to not need such long file names in the first place is perhaps the least painful approach.
Apr
26
answered What file system to choose and mount options to use for serving a datastore to remote ESX server via NFS and ISCSI
Apr
17
answered PostgreSQL won't start because it “Cannot allocate memory”
Apr
14
comment Task spooler for computing server on Debian
slurm is another option which is quite popular, although perhaps more targeting efficient scheduling of large MPI jobs on large clusters.