lkml.org 
[lkml]   [2003]   [Feb]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch] procfs/procps threading performance speedup, 2.5.62

eg. with 16,000 threads in /proc, "ls /proc" is still fast:

real:0m0.032s user:0m0.007s sys:0m0.024s

without those threads, it's:

real:0m0.014s user:0m0.004s sys:0m0.010s

15 msecs difference. Even simple 'ls' reads the full /proc directory (all
16K+ entries). So performance-wise there's not a big difference.

architecture-wise there is a difference, and i'd be the last one arguing
against a tree-based approach to thread groups. It's much easier to find
threads belonging to a single 'process' via /proc this way - although no
functionality in procps has or requires such a feature currently.

Ingo

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:33    [W:0.107 / U:7.892 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site