1276993 - Investigate startup crashes in OOM | small with very low uptime, and safe mode turned on

Status: NEW

(Core :: General, defect)

Description

[Benjamin Smedberg]

https://crash-stats.mozilla.com/search/?product=Firefox&uptime=%3C8&safe_mode=__true__&process_type=%21plugin&process_type=%21content&signature=%3DOOM%20%7C%20small&_facets=signature&_facets=moz_crash_reason&_facets=abort_message&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform&_columns=last_crash&_columns=available_virtual_memory&_columns=available_physical_memory&_columns=available_page_file#crash-reports

This is a list of crashes in OOM | small with very low uptime, and running in safe mode. I cannot think of a reason in normal operation why we'd run out of memory in this configuration. I think we need to investigate this further and break this down:

* how many of these are actually running out of:
** physical memory
** actually running out of VM
** fragmenting VM to death
** not actually running out of memory - if so, why are we reporting this as OOM | small?

Comment 1

[David Bolter [:davidb] (NeedInfo me for attention)]

Possibly related (from an email thread about a surge in startup crash reports)...
"Yes, it seems socorro is mis-classifying these. Are we using the uptime at the time of submission to classify start up crashes? If so, that's pretty broken, we should be using the uptime at the time of crashing."

Comment 2

[Wayne Mery (:wsmwk)]

gcp,
Do you see value in keeping this?

Comment 3

[Gian-Carlo Pascutto [:gcp]]

Gabriele, is the behavior in comment 1 still a thing?

Comment 4

[Gabriele Svelto [:gsvelto] (PTO)]

Looking at the results of the query the vast majority of those crashes have minuscule amounts of commit space left, the machines they were running on were likely heavily loaded and running out of memory regardless of what Firefox did.

Comment 5

[Gabriele Svelto [:gsvelto] (PTO)]

I'd say those crashes are expected, I don't think an investigation here would turn up anything useful.