CURRENT slow and shaky network stability

O. Hartmann ohartman at zedat.fu-berlin.de
Sat Mar 26 19:01:32 UTC 2016


Am Sat, 26 Mar 2016 13:28:16 -0400
Michael Butler <imb at protected-networks.net> schrieb:

> -current is not great for interactive use at all. The strategy of
> pre-emptively dropping idle processes to swap is hurting .. big time.

What is the gain then?

If this "feature" results in corrupted ssh sessions, slow console sessions or even worse:
prolongued compilation times, then it is a big fail!

> 
> Compare inactive memory to swap in this example ..
> 
> 110 processes: 1 running, 108 sleeping, 1 zombie
> CPU:  1.2% user,  0.0% nice,  4.3% system,  0.0% interrupt, 94.5% idle
> Mem: 474M Active, 1609M Inact, 764M Wired, 281M Buf, 119M Free
> Swap: 4096M Total, 917M Used, 3178M Free, 22% Inuse
> 
>   PID USERNAME       THR PRI NICE   SIZE    RES STATE   C   TIME    WCPU
> COMMAND
>  1819 imb              1  28    0   213M 11284K select  1 147:44   5.97%
> gkrellm
> 59238 imb             43  20    0   980M   424M select  0  10:07   1.92%
> firefox
> 
>  .. it shouldn't start randomly swapping out processes because they're
> used infrequently when there's more than enough RAM to spare ..
> 
> It also shows up when trying to reboot .. on all of my gear, 90 seconds
> of "fail-safe" time-out is no longer enough when a good proportion of
> daemons have been dropped onto swap and must be brought back in to flush
> their data segments :-(
> 
> 	Michael

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 473 bytes
Desc: OpenPGP digital signature
URL: <http://lists.freebsd.org/pipermail/freebsd-current/attachments/20160326/01374f23/attachment.sig>


More information about the freebsd-current mailing list