Re: DHAT speed
Paul FLOYD <[email protected]>
| Newsgroups | gmane.comp.debugging.valgrind |
|---|---|
| Message-ID | <[email protected]> |
[snip - perf]
Well, no real surprises. This is with a testcase that runs standalone in about 5 seconds and under DHAT in about 200 seconds (so a reasonable slowdown of 40x).
# Overhead Command Shared Object
Symbol
# ........ ............... .................. ................................................................................................................................................................................................................
#
29.11% dhat-amd64-linu dhat-amd64-linux [.] interval_tree_Cmp
21.13% dhat-amd64-linu perf-26905.map [.] 0x00000010057a25f8
13.32% dhat-amd64-linu dhat-amd64-linux [.] vgPlain_lookupFM
9.56% dhat-amd64-linu dhat-amd64-linux [.] dh_handle_read
8.83% dhat-amd64-linu dhat-amd64-linux [.] vgPlain_nextIterFM
4.66% dhat-amd64-linu dhat-amd64-linux [.] check_for_peak
1.85% dhat-amd64-linu dhat-amd64-linux [.] vgPlain_disp_cp_xindir
1.32% dhat-amd64-linu [kernel.kallsyms] [k] 0xffffffff8103ec0a
1.00% dhat-amd64-linu dhat-amd64-linux [.] dh_handle_write
A+
Paul