Re: [perf-discuss] Tracing waits in LatencyTOP [was: Seeking feedback on LatencyTOP]

2009-05-18 Thread Lejun Zhu
Hi Krish, Yes that is the window I plan to use, the content will be switching between park/wait and locks, instead of showing them at the same time. This separates latency statistics into different point of views. For example, if file read operation uses lock a and b, write uses lock a and c, l

[perf-discuss] Tracing waits in LatencyTOP [was: Seeking feedback on LatencyTOP]

2009-05-11 Thread Lejun Zhu
Regarding the questions Eric raised, I think we can answer "What/who is it waiting on" by adding a new view like: Process XYZ:Total: 80 msec Type:Name Count AverageMax Mutex:ff02532845f

Re: [perf-discuss] Seeking feedback on LatencyTOP

2009-04-21 Thread Lejun Zhu
Hi Krishnendu, Thank you for these excellent suggestions, I think they will improve the usability of LatencyTOP. For the adaptive-block probe, it is possible to add it to the D script, but when it happens, the sleep time will be counted by both adaptive-block and the off-cpu/on-cpu probes in L

Re: [perf-discuss] Project proposal: LatencyTOP

2009-01-23 Thread Lejun Zhu
Hi Rafael, Thank you for your suggestions :) Please see my comments below. > Hi Lejun > > The design doc looks good, here are my comments. > > Sec 2.2: Is there a limit to the number of rules the > user can specify in > the configuration file? There's no explicit limit. The rule matching will

Re: [perf-discuss] Project proposal: LatencyTOP

2009-01-19 Thread Lejun Zhu
Hi all, Here's the design document for LatencyTop. Comments are welcome. Thanks. -- This message posted from opensolaris.org LatencyTOP High Level Design Document Zhu, Lejun(lejun@intel.com)