zfs discuss - Sep 2009 - Unusual latency issues

Hi, this may not be correct mailinglist for this, but I''d like to share
this with you, I noticed weird network behavior with osol snv_123.
icmp for host lags randomly between 500ms-5000ms and ssh sessions seem to
tangle, I guess this could affect iscsi/nfs as well.

what was most intresting that I found workaround to be running snoop with
promiscuous mode disabled on interfaces suffering lag, this did make
interruptions go away. Is this somekind cpu/irq scheduling issue?

Behaviour was noticed on two different platform and with two different nics (bge
and e1000).

Yours
Markus Kovero
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Markus Kovero wrote:

Hi, this may not be correct
mailinglist for
this, but I’d like to share this with you, I noticed weird network
behavior
with osol snv_123.

icmp for host lags randomly
between 500ms-5000ms
and ssh sessions seem to tangle, I guess this could affect iscsi/nfs as
well.

what was most intresting that
I found
workaround to be running snoop with promiscuous mode disabled on
interfaces
suffering lag, this did make interruptions go away. Is this somekind
cpu/irq
scheduling issue?

Behaviour was noticed on two
different
platform and with two different nics (bge and e1000).

Unless you have some specific reason for thinking this is a zfs issue,
you probably want to ask on the crossbow-discuss mailing list.

-- 

Andrew


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