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...on, I use some tsd_*() functions and kmem_zalloc() function. These functions might be heavy and affect the performance. I want to call this function only when DTrace is running or the DTrace probes are enable. So is there a way to check DTrace is running or DTrace probe is enabled? Regards, Danhua

We recently had a strange NFS performance anomaly between a V880 running snv_124 and two NetApp filers. To investigate, a DTrace NFSv4 (and eventually NFSv3) client provider would been extremely helpful. Unfortunately, all I could find were a request for code review of a v3 client provider and another request for help developing a v4 provider. Nothing seems to have come from those initiatives,

Hi, I have got an implementation of DTrace probes for NFS v3 client. Webrev of my change is at: http://cr.opensolaris.org/~danhua/webrev/ The provider and probes are described in attached proposal. Welcome comments! Regards, Danhua -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: proposal-nfsv3client.txt URL: <http://mail.opensolaris.org/pipermail/dtrace-discuss/att...

...racing NFS v3 client activities such as sending RPC requests to NFS v3 server and receiving RPC replies from NFS v3 server. Formats and arguments of these new probes are quite similar to existing NFS v3 probes on server side (provider: nfsv3). If you have any comments, please voice them. Regards, Danhua -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: proposal-nfsv3client.txt URL: <http://mail.opensolaris.org/pipermail/dtrace-discuss/attachments/20080910/d8652c4b/attachment.txt>

Hi, Thanks for the comment for my nfsv3client probe implementation! I have made changes accordingly. Webrev: http://cr.opensolaris.org/~danhua/webrev/ To reduce the overhead, I use a local variable to save XID, rather than alloc memory space with kmem_zalloc(). According to the overhead caused by tsd_get() and tsd_set(), I did an experiment to measure it. In this experiment, I run a dtrace script to enable nfsv3client probes and mea...