Am Mittwoch, 20. März 2013 schrieb David Sterba:
> Hi,
>
> finally removing the obsolete utilities, adding the fragmentation
> visualisation tool in exchange, setting of io priority for scrub, few
> more fixes and updates to the build system.
The fragmentation visuation tool works nicely. Tried it on about 200 GiB
/home, almost no fragmentation, some 3-4%, but mostly 0.something%,
and on about 20 GiB root, were some chunks were fragmented upto 30-40%.
What kind of fragmentation does the tool count? From what I understand
by looking at the source, extent fragmentation?
82 static void
83 print_bg(FILE *html, char *name, u64 start, u64 len, u64 used, u64 flags,
84 »······· u64 areas)
85 {
86 »·······double frag = (double)areas / (len / 4096) * 2;
87
88 »·······fprintf(html, "<p>%s chunk starts at %lld, size is %s, %.2f%% used, "
89 »·······»······· "%.2f%% fragmented</p>\n", chunk_type(flags), start,
90 »·······»······· pretty_sizes(len), 100.0 * used / len, 100.0 * frag);
91 »·······fprintf(html, "<img src=\"%s\" border=\"1\" />\n", name);
92 }
Thanks,
--
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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