[Netarchivesuite-users] Your URI/sec and KB/sec figures?
Tue Hejlskov Larsen
tlr at kb.dk
Mon Jun 24 15:16:11 CEST 2019
The 70 TB is based on NAS GUI/crawllog numbers - and before deduplication and gz - about 20 TB gz uploaded.
"A broadcrawl" runs about 2 - 2 1/2 months - and we do some job follow up during step 2 ( this part takes about 1 ½ month) and the selective broad crawl job "mega big sites" (runs for a month or more and here we use another queue assign policy and much lower delays and harvest only domains which can take a huge number of crawling requests!)
Best regards
Tue
From: NetarchiveSuite-users <netarchivesuite-users-bounces at ml.sbforge.org> On Behalf Of Peter Svanberg
Sent: Monday, June 24, 2019 2:54 PM
To: netarchivesuite-users at ml.sbforge.org
Subject: Re: [Netarchivesuite-users] Your URI/sec and KB/sec figures?
Thank you Tue, this is very interesting information!
About 70 TB in how many days?
You emphasize "harvested" - do you aim at that more data is downloaded but not archived (sorted out duplicates/irrelevant?)?
I'll return when I have gathered corresponding info on our environment.
Regards,
-----
Peter Svanberg
National Library of Sweden
Phone: +46 10 709 32 78
E-mail: peter.svanberg at kb.se<mailto:peter.svanberg at kb.se>
Web: www.kb.se<http://www.kb.se>
Från: NetarchiveSuite-users <netarchivesuite-users-bounces at ml.sbforge.org<mailto:netarchivesuite-users-bounces at ml.sbforge.org>> För Tue Hejlskov Larsen
Skickat: den 24 juni 2019 12:22
Till: netarchivesuite-users at ml.sbforge.org<mailto:netarchivesuite-users at ml.sbforge.org>
Ämne: Re: [Netarchivesuite-users] Your URI/sec and KB/sec figures?
Hi Peter
We have currently only minor performance issues during harvesting. We have almost finished with our 2. broadcrawl this year - it will end up between 60-70 TB harvested pages.
Our harvesting capacity is 90-100 Heritrix harvesters including some virtual Umbra harvesters...
We are using physical servers for the broadcrawl harvesters and virtual servers for selective harvesters.
The 5 physical servers have each:
32 G MEM, 24 CPU's, 4 TB local storage
The 5 Virtual servers using NFS:
20 G RAM, 8 CPU's and 3 TB NFS storage
On each server we have between 8-10 Heritrix instances running - withdrawn the Umbra harvesters which only have one per server.
Between the harvester and the www we have a firewall and throttling firewall agreements with about 5 webhotels, because they blocked/throttled our harvesters.
Best regards
Tue
From: NetarchiveSuite-users <netarchivesuite-users-bounces at ml.sbforge.org<mailto:netarchivesuite-users-bounces at ml.sbforge.org>> On Behalf Of Peter Svanberg
Sent: Monday, June 24, 2019 11:39 AM
To: netarchivesuite-users at ml.sbforge.org<mailto:netarchivesuite-users at ml.sbforge.org>
Subject: [Netarchivesuite-users] Your URI/sec and KB/sec figures?
Hello!
I discovered a Heritrix mailinglist(*). Amongst some interesting tips on making the crawl faster, I also read some speed figures far from what we ever get. So I ask you: what do you get as speed values?
Our latest 19 selective harvests have the following figures (from crawl-report.txt in the jobs metadata WARC file):
URIs/sec: slowest job 0,83; fastest job 9,8; average 5,11
KB/sec: slowest 34; fastest 863; average 313
(I realize that this besides NAS/Heritrix configuration depends much on hardware, memory, disk I/O, network capacity etc. but don't know which such figures that are most relevant to add to this comparison. Suggestions?)
* https://groups.yahoo.com/neo/groups/archive-crawler/conversations/messages
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://ml.sbforge.org/pipermail/netarchivesuite-users/attachments/20190624/1e0e995a/attachment.html>
More information about the NetarchiveSuite-users
mailing list