485 reputation
29
bio website zlynx.org
location Greenwood Village, CO
age 39
visits member for 4 years, 10 months
seen 2 days ago

Nothing interesting about me. This is not the user you are looking for. Move along. Move along.


Apr
15
comment 4TB drives using an ARC-1231 controller?
@StefanLasiewski: A new RAID controller is as likely to fail as an older one. If really new, even more likely.
Apr
9
answered Guaranteeing Shell Responsiveness on Pegged System
Apr
9
comment Why is 1 of my 24 CPUs Pegged at 100%?
Couldn't that also be a driver bug or a piece of bad hardware interacting with a driver with no error recovery? Or maybe software calling into the kernel in a tight loop.
Mar
31
comment Force edit txt file that is in use windows
I remember seeing programs that would forcably break file locks. I believe they did it by attaching to each process with the lock and closing the file handle from inside the process.
Mar
5
answered troubleshooting out of memory error messages from mysql
Oct
16
awarded  Popular Question
Feb
22
answered Serving html from linux ramdisk
Mar
2
awarded  Yearling
Feb
16
comment Tuning Linux disk caching behaviour for maximum throughput
@PeterMeyer: Even if you have a lot of RAM it is still a mistake to wait for writes to start. The only time that makes any sense at all is if you are going to be editing or deleting files (like a temporary file) before it would get to disk. A backup does not do that. You want to start background writes as soon as possible. Set your background_ratio to 1 or 2.
Feb
15
comment Tuning Linux disk caching behaviour for maximum throughput
Wouldn't it make more sense to start writing as soon as possible? Otherwise it reaches the maximum buffer size and suddenly comes to a halt. If it was writing all along it gives you more time.
Dec
13
comment How do I speed up and cache mmap file access over NFS on Linux?
I added some info about proc mounts to the question.
Dec
13
revised How do I speed up and cache mmap file access over NFS on Linux?
Add details about autofs and proc mounts.
Dec
13
comment How do I speed up and cache mmap file access over NFS on Linux?
@DavidSchwartz: Right. Since these are virtual systems there aren't any real local disks. It's all virtual. The "local disk" is a VMware image backed by iSCSI.
Dec
13
comment How do I speed up and cache mmap file access over NFS on Linux?
Sequential read/write runs at 80MB/s per second, so that part of the NFS tuning is okay.
Dec
13
awarded  Student
Dec
13
asked How do I speed up and cache mmap file access over NFS on Linux?
Nov
30
comment In TCP/IP terms, how does a download speed limiter in an office work?
@TessellatingHeckler: The method that I like also enables the use of ECN which actually does tell the sending server to slow down without dropping packets. This method is to apply the rate limiter such as RED to packets leaving on the LAN interface, instead of trying to use an ingress filter on the WAN interface.
Nov
23
comment Networking Units: Not getting expected performance from 100Mb Ethernet
@MarkM: If you look at the reviews of NAS equipment, you will find that 40/20 MB/s is not an unusual speed.
Nov
23
comment Hot spare or extra parity drive in RAID array?
+1: I agree. I see no reason to use RAID-5 when RAID-6 is available. Benchmark the hardware. It should be able to do RAID-6 at full speed, or nearly.
Nov
23
revised Networking Units: Not getting expected performance from 100Mb Ethernet
Fix 10x faster to say faster and can reach the NAS speed.