Performance Instrumentation Counters: short talk

Performance Instrumentation Counters (PICs) allow CPU internals to be observed, and are especially useful for identifying why exactly CPUs are busy – not just that they are. I’ve blogged about them before, as part of analyzing HyperTransport utilization and CPI (Cycles-per-Instruction). There are a number of performance analysis needs for which can only be answered [...]

Posted on May 15, 2010 at 4:26 pm by Brendan Gregg · Permalink · 4 Comments
In: Performance · Tagged with: , , , ,

7410 hardware update, and analyzing the HyperTransport

Today we have released an update to the Sun Storage 7410, which upgraded the CPUs from Barcelona to Istanbul: 7410 (Barcelona) 7410 (Istanbul) Max 4 sockets quad core AMD Opteron CPU Max 4 sockets of six core AMD Opteron CPU Max 128 Gbytes DRAM Max 256 Gbytes DRAM HyperTransport 1.0 HyperTransport 3.0 This is per [...]

Posted on September 22, 2009 at 11:42 pm by Brendan Gregg · Permalink · 7 Comments
In: Fishworks · Tagged with: , , , , ,