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Warn [cpsrvd] pre-auth floor clamped low. Host may be I/O-saturated during cpsrvd startup

bloatedstoat
  • Edited

Hello,

Started receiving these messages today in /usr/local/cpanel/logs/error_log on two servers:

Main hosting server and a DNS Only server. Both servers were updated today to version 136.0.32 (at different times) but after each were updated the messages' appear in the logs.

Main server is CloudLinux v8.10.0
DNS Only AlmaLinux v9.8.0

[2026-07-30 19:48:18 +1000] info [cpsrvd] version 11.136.0.32 online
[2026-07-30 19:48:18 +1000] warn [cpsrvd] pre-auth floor clamped low: calibrated=0.085s, target=0.100s (two_crypts=0.023s). Host may be I/O-saturated during cpsrvd startup or running an unusually fast crypt algorithm.
==> cpsrvd 11.136.0.32 started
==> cpsrvd: loading security policy....Done
==> cpsrvd: Setting up SSL support ... Done
==> cpsrvd: transferred port bindings: 10,11,12,18,3,4,5,6,7,8,9
==> cpsrvd: bound to ports

Thank you.

Comments

6 comments

Date Votes
  • cPRex Jurassic Moderator

    Hey there!  Unfortunately you're in uncharted territory as I'm not finding this specific error message anywhere.  We'd need to see a ticket on this one.

    0
  • ciao70

    Hi,

    Same problem after updating cPanel 136.0.32

    Almalinux 8.10

    [2026-07-30 12:20:34 +0200] info [cpsrvd] version 11.136.0.32 online
    [2026-07-30 12:20:34 +0200] warn [cpsrvd] pre-auth floor clamped low: calibrated=0.059s, target=0.100s (two_crypts=0.006s). Host may be I/O-saturated during cpsrvd startup or running an unusually fast crypt algorithm.
    ==> cpsrvd 11.136.0.32 started
    ==> cpsrvd: loading security policy....Done
    ==> cpsrvd: Setting up SSL support ... Done
    ==> cpsrvd: transferred port bindings: 10,11,12,18,3,4,5,6,7,8,9
    ==> cpsrvd: bound to ports
    [2026-07-30 13:20:37 +0200] info [cpsrvd] version 11.136.0.32 online
    [2026-07-30 13:20:37 +0200] warn [cpsrvd] pre-auth floor clamped low: calibrated=0.059s, target=0.100s (two_crypts=0.006s). Host may be I/O-saturated during cpsrvd startup or running an unusually fast crypt algorithm.
    ==> cpsrvd 11.136.0.32 started
    ==> cpsrvd: loading security policy....Done
    ==> cpsrvd: Setting up SSL support ... Done
    ==> cpsrvd: transferred port bindings: 10,11,12,18,3,4,5,6,7,8,9
    ==> cpsrvd: bound to ports
    [2026-07-30 14:23:38 +0200] info [cpsrvd] version 11.136.0.32 online
    [2026-07-30 14:23:38 +0200] warn [cpsrvd] pre-auth floor clamped low: calibrated=0.059s, target=0.100s (two_crypts=0.006s). Host may be I/O-saturated during cpsrvd startup or running an unusually fast crypt algorithm.
    ==> cpsrvd 11.136.0.32 started
    ==> cpsrvd: loading security policy....Done
    ==> cpsrvd: Setting up SSL support ... Done
    ==> cpsrvd: transferred port bindings: 10,11,12,18,3,4,5,6,7,8,9
    ==> cpsrvd: bound to ports
    [2026-07-30 15:25:02 +0200] info [cpsrvd] version 11.136.0.32 online
    [2026-07-30 15:25:02 +0200] warn [cpsrvd] pre-auth floor clamped low: calibrated=0.059s, target=0.100s (two_crypts=0.006s). Host may be I/O-saturated during cpsrvd startup or running an unusually fast crypt algorithm.
    ==> cpsrvd 11.136.0.32 started
    ==> cpsrvd: loading security policy....Done
    ==> cpsrvd: Setting up SSL support ... Done
    ==> cpsrvd: transferred port bindings: 10,11,12,18,3,4,5,6,7,8,9
    ==> cpsrvd: bound to ports
    [2026-07-30 16:25:45 +0200] info [cpsrvd] version 11.136.0.32 online
    [2026-07-30 16:25:45 +0200] warn [cpsrvd] pre-auth floor clamped low: calibrated=0.059s, target=0.100s (two_crypts=0.006s). Host may be I/O-saturated during cpsrvd startup or running an unusually fast crypt algorithm.
    ==> cpsrvd 11.136.0.32 started
    ==> cpsrvd: loading security policy....Done
    ==> cpsrvd: Setting up SSL support ... Done
    ==> cpsrvd: transferred port bindings: 10,11,12,18,3,4,5,6,7,8,9

     

    0
  • cPRex Jurassic Moderator
    • Edited

    I created case CPANEL-55379 and linked this thread to it.  You shouldn't need to submit a ticket at this point as I think I have enough information for the developers to handle this now.

    I'll be sure to post again if I hear more on my side, but it's worth noting that this is a "warn" level error so it's not fatal to cPanel functions in any way.

    2
  • bloatedstoat

    Following a ticket I received the response as follows:

    Thank you for your patience, and understood. Reviewing the case Rex filed it looks like our developers have already verified the case which included the change that added this warning, this doesn't look to cause any issues with the cPanel software but it is still being reviewed.

    2
  • cPRex Jurassic Moderator

    Update - our team has a resolution for this in place so it should get included in the next update that goes out.

    1
  • cPRex Jurassic Moderator

    Update - this will be resolved in in the next 136 build once that is released, which is scheduled to be 136.0.33.

    1

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