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[[!meta copyright="Copyright © 2012, 2013 Free Software Foundation, Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]
[[!tag open_issue_documentation]]There should be a page listing ways to get
system statistics, how to interpret them, and some example/expected values.
# IRC, frenode, #hurd, 2012-11-04
<mcsim> Hi, is that normal that memory cache "ipc_port" is 24 Mb already?
Some memory has been already swapped out.
<mcsim> Other caches are big too
<braunr> how many ports ?
<mcsim> 45922
<braunr> yes it's normal
<braunr> ipc_port 0010 76 4k 50 45937 302050
24164k 4240k
<braunr> it's a bug in exim
<braunr> or triggered by exim, from time to time
<braunr> lots of ports are created until the faulty processes are killed
<braunr> the other big caches you have are vm_object and vm_map_entry,
probably because of a big build like glibc
<braunr> and if they remain big, it's because there was no memory pressure
since they got big
<braunr> memory pressure can only be caused by very large files on the
hurd, because of the limited page cache size (4000 objects at most)
<braunr> the reason you have swapped memory is probably because of a glibc
test that allocates a very large (more than 1.5 GiB iirc) block and fills
it
<mcsim> yes
<braunr> (a test that fails with the 2G/2G split of the debian kernel, but
not on your vanilla version btw)
## IRC, frenode, #hurd, 2013-01-26
<braunr> ah great, one of the recent fixes (probably select-eintr or
setitimer) fixed exim4 :)
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