Re: On understanding Linux I/O problems.

2011-03-23 Thread Dan Serban
On 03/23/11 03:18, Henrique de Moraes Holschuh wrote: On Wed, 23 Mar 2011, Dan Serban wrote: So, I'm asking, what do most sysadmins use to diagnose IO problems? dmesg, blktrace, perf tools (linux-tools-2.6), on top of those you already mentioned. Appreciate the pointers, perf to

Re: On understanding Linux I/O problems.

2011-03-23 Thread Henrique de Moraes Holschuh
On Wed, 23 Mar 2011, Dan Serban wrote: > So, I'm asking, what do most sysadmins use to diagnose IO problems? dmesg, blktrace, perf tools (linux-tools-2.6), on top of those you already mentioned. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkn

On understanding Linux I/O problems.

2011-03-23 Thread Dan Serban
Recently I have been running into different issues related to IO problems on different machines. Diagnosing faulty hardware, bandwidth limits and IO caused by different problems which took me quite some time to figure out and I'm still not 100% clear if I've fixed them. So, I'm asking, what d