Debian Bug report logs - #24412
libc6/linuxthreads runs out of thread memory space

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Jesper Angelo <guru@borsen.dk>

To: submit@bugs.debian.org

Subject: libc6/linuxthreads runs out of thread memory space

Date: Fri, 10 Jul 1998 12:30:12 +0200

================================ [  PROBLEM   ]
================================


Package: libc6
Version: 2.0.7r-5
Severity: Seriuos


After upgrading to libc6 version 2.0.7r-5 (from 2.0.7r-2), our mysql
database
started hanging/failing with the error 'Out of thread space/memory'.

Testing several versions of mysql (Debian dist., binary release from
tcx, source
compiled on system), in different versions, we have ruled out that mySql
is the
problem. (Also, it *was* running smoothly yesterday...on the previous
release of
libc6)

Our server is running on a Dual 300MHz Pentium II (Dell PowerEdge 4200).

We have also found the problem on a single 2333 MHz Pentium II system
(Dell
OptiPlex GXa).

We have not (yet?) been able to provoke the error on an older single
processor
133 MHz Pentium (586).

The problem seem to be directly caused by a total large number of thread
operations from one application (aprx. 15.000-20.000), as done by
mySql...

Restarting the mySql server every 10.000 operation (5 min on our server)
helps.

The easiest way to demonstrate this fault is with the mySql benchmark
program.
First and second (sometimes third time) this is run, it completes with
no errors.
After this, libc6 "gets tired", and the benchmark program produces:

# ./run-all-tests  
Benchmark DBD suit:  1.2
Date of test:        1998-07-10 11:11:22
Running tests on:    Linux 2.0.34 i686
Arguments:           
Comments:            
Limits from:         
Got error: 'Out of thread space/memory' when connecting to
DBI:mysql:test:localhost with user: '' password: '' at
/usr/lib/mysql/sql-bench/server-cfg line 150.
guru:/usr/lib/mysql/sql-bench# ./run-all-tests 
Benchmark DBD suit:  1.2
Date of test:        1998-07-10 11:13:30
Running tests on:    Linux 2.0.34 i686
Arguments:           
Comments:            
Limits from:         
Server version:      MySQL 3.21.31

ATIS: Total time: 74 secs (13.22 usr  4.61 sys = 17.83 cpu)
big-tables: Total time: 27 secs ( 2.26 usr  1.58 sys =  3.84 cpu)
connect: Can't execute connect.  Check the 'output' directory


After the 'Out of thread space/memory' error, the server is still
running, but
its impossible to both connect to it as to kill it with anything else
than
kill -9 <pid of mysql root process>.

Following the process with "watch mysqladmin status" shows that crash
typically
(but not always) happens after aprx. 15000 mysql database requests. The
number
of simultanous threads never got past 5.


================================ [ INFO BLOCK ]
================================

Debian version: 2.0

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Kernel: Linux 2.0.34 #3 Tue Jul 7 11:09:18 CEST 1998 i686 unknown

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

libc versions
-------------
# ls -l /lib/libc*
-rwxr-xr-x   1 root     root       650904 Jul  4 20:53
/lib/libc-2.0.7.so
lrwxrwxrwx   1 root     root           14 Jul  2 10:13 /lib/libc.so.5 ->
libc.so.5.4.38
-rwxr-xr-x   1 root     root       584776 Jun  7 14:09
/lib/libc.so.5.4.38
lrwxrwxrwx   1 root     root           13 Jul  9 11:04 /lib/libc.so.6 ->
libc-2.0.7.so

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

libc6 package information
-------------------------
# dpkg --list libc6 
Desired=Unknown/Install/Remove/Purge
|
Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err:
uppercase=bad)
||/ Name            Version        Description
+++-===============-==============-============================================
ii  libc6           2.0.7r-5       The GNU C library version 2 (run-time
files)

# dpkg --status libc6
Package: libc6
Status: install ok installed
Priority: required
Section: base
Installed-Size: 1502
Maintainer: Dale Scheetz <dwarf@polaris.net>
Source: glibc
Version: 2.0.7r-5
Pre-Depends: ldso (>= 1.8.10-1)
Conflicts: libc5 (<< 5.4.33-7), libpthread0 (<< 0.7-10)
Description: The GNU C library version 2 (run-time files).
 Includes shared libraries needed to run programs.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Hardware
--------

# cat /proc/cpuinfo 
processor       : 0
cpu             : 686
model           : 3
vendor_id       : GenuineIntel
stepping        : 4
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid           : yes
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic 11 mtrr pge
mca cmov mmx
bogomips        : 299.01

processor       : 1
cpu             : 686
model           : 3
vendor_id       : GenuineIntel
stepping        : 4
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid           : yes
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic 11 mtrr pge
mca cmov mmx
bogomips        : 298.19


# cat /proc/meminfo 
        total:    used:    free:  shared: buffers:  cached:
Mem:  263393280 256016384  7376896 83283968 85561344 77365248
Swap: 131567616        0 131567616
MemTotal:    257220 kB
MemFree:       7204 kB
MemShared:    81332 kB
Buffers:      83556 kB
Cached:       75552 kB
SwapTotal:   128484 kB
SwapFree:    128484 kB


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Webserver
---------

Apache Server Status for atlas.borsen.dk

Server Version: Apache/1.3.0 (Unix) Debian/GNU PHP/3.0
Server Built: Jun 11 1998 12:47:25

Current Time: Friday, 10-Jul-1998 11:48:25 CEST
Restart Time: Friday, 10-Jul-1998 10:29:03 CEST
Server uptime: 1 hour 19 minutes 22 seconds
Total accesses: 21155 - Total Traffic: 34.3 MB
CPU Usage: u14.56 s21.21 cu1.02 cs2.62 - .828% CPU load
4.44 requests/sec - 7.4 kB/second - 1701 B/request
18 requests currently being processed, 13 idle servers 

WK__KKW_.K_KK_.KK.W...WKK_.K_KK__.___..K_.......................
................................................................
................................................................
................................................................

Scoreboard Key: 
"_" Waiting for Connection, "S" Starting up, "R" Reading Request,
"W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup,
"L" Logging, "G" Gracefully finishing, "." Open slot with no current
process

Srv  PID    Acc      M   CPU   SS  Req  Conn  Child  Slot 
Host           VHost          Request
0    32567  1/4/585  W   0.20  1   373  0.0   0.000  0.81 
152.73.42.122  www.borsen.dk  ...

                <...snip 60 more entries...>

Srv    Server number
PID    OS process ID
Acc    Number of accesses this connection / this child / this slot
M      Mode of operation
CPU    CPU usage, number of seconds
SS     Seconds since beginning of most recent request
Req    Milliseconds required to process most recent request
Conn   Kilobytes transferred this connection
Child  Megabytes transferred this child
Slot   Total megabytes transferred this slot

Message #16 received at 24414-close@bugs.debian.org (full text, mbox, reply):

From: Ben Collins <bcollins@debian.org>

To: 24414-close@bugs.debian.org

Subject: Bug#24414: fixed in glibc 2.2-6

Date: Mon, 18 Dec 2000 14:55:49 -0500

We believe that the bug you reported is fixed in the latest version of
glibc, which has been installed in the Debian FTP archive:

libc6-dev_2.2-6_powerpc.deb
  to pool/main/g/glibc/libc6-dev_2.2-6_powerpc.deb
locales_2.2-6_all.deb
  to pool/main/g/glibc/locales_2.2-6_all.deb
libc6-prof_2.2-6_sparc.deb
  to pool/main/g/glibc/libc6-prof_2.2-6_sparc.deb
nscd_2.2-6_powerpc.deb
  to pool/main/g/glibc/nscd_2.2-6_powerpc.deb
libc6-dbg_2.2-6_sparc.deb
  to pool/main/g/glibc/libc6-dbg_2.2-6_sparc.deb
nscd_2.2-6_i386.deb
  to pool/main/g/glibc/nscd_2.2-6_i386.deb
i18ndata_2.2-6_all.deb
  to pool/main/g/glibc/i18ndata_2.2-6_all.deb
libc6-prof_2.2-6_powerpc.deb
  to pool/main/g/glibc/libc6-prof_2.2-6_powerpc.deb
libc6-i686_2.2-6_i386.deb
  to pool/main/g/glibc/libc6-i686_2.2-6_i386.deb
libc6-dbg_2.2-6_i386.deb
  to pool/main/g/glibc/libc6-dbg_2.2-6_i386.deb
libc6-pic_2.2-6_sparc.deb
  to pool/main/g/glibc/libc6-pic_2.2-6_sparc.deb
libc6_2.2-6_i386.deb
  to pool/main/g/glibc/libc6_2.2-6_i386.deb
glibc_2.2-6.diff.gz
  to pool/main/g/glibc/glibc_2.2-6.diff.gz
libc6-dev_2.2-6_i386.deb
  to pool/main/g/glibc/libc6-dev_2.2-6_i386.deb
libc6-pic_2.2-6_i386.deb
  to pool/main/g/glibc/libc6-pic_2.2-6_i386.deb
glibc_2.2-6.dsc
  to pool/main/g/glibc/glibc_2.2-6.dsc
libc6_2.2-6_sparc.deb
  to pool/main/g/glibc/libc6_2.2-6_sparc.deb
libc6-prof_2.2-6_i386.deb
  to pool/main/g/glibc/libc6-prof_2.2-6_i386.deb
nscd_2.2-6_sparc.deb
  to pool/main/g/glibc/nscd_2.2-6_sparc.deb
glibc-doc_2.2-6_all.deb
  to pool/main/g/glibc/glibc-doc_2.2-6_all.deb
libc6-pic_2.2-6_powerpc.deb
  to pool/main/g/glibc/libc6-pic_2.2-6_powerpc.deb
libc6-dbg_2.2-6_powerpc.deb
  to pool/main/g/glibc/libc6-dbg_2.2-6_powerpc.deb
libc6-dev_2.2-6_sparc.deb
  to pool/main/g/glibc/libc6-dev_2.2-6_sparc.deb
libc6-v9_2.2-6_sparc.deb
  to pool/main/g/glibc/libc6-v9_2.2-6_sparc.deb
libc6_2.2-6_powerpc.deb
  to pool/main/g/glibc/libc6_2.2-6_powerpc.deb
libc6-i586_2.2-6_i386.deb
  to pool/main/g/glibc/libc6-i586_2.2-6_i386.deb
A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 24414@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Ben Collins <bcollins@debian.org> (supplier of updated glibc package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.7
Date: Fri, 15 Dec 2000 15:30:16 -0500
Source: glibc
Binary: locales libc0.2-dbg glibc-doc nscd libc6-i586 libc6.1-dbg libc6-i686 libc0.2 libc6-dbg libc6-v9 libc0.2-prof libc6.1 libc6 libc0.2-pic libc6.1-prof libc6-prof libc0.2-dev libc6.1-pic libc6-pic i18ndata libc6.1-dev libc6-dev
Architecture: source all sparc powerpc i386
Version: 2.2-6
Distribution: unstable
Urgency: low
Maintainer: Ben Collins <bcollins@debian.org>
Changed-By: Ben Collins <bcollins@debian.org>
Description: 
 glibc-doc  - GNU C Library: Documentation
 i18ndata   - GNU C Library: National Language (locale) data [source]
 libc6      - GNU C Library: Shared libraries and Timezone data
 libc6-dbg  - GNU C Library: Libraries with debugging symbols
 libc6-dev  - GNU C Library: Development Libraries and Header Files.
 libc6-pic  - GNU C Library: PIC archive library
 libc6-prof - GNU C Library: Profiling Libraries.
 libc6-v9   - GNU C Library: Shared libraries [v9 optimized]
 libc6-i586 - GNU C Library: Shared libraries [i586 optimized]
 libc6-i686 - GNU C Library: Shared libraries [i686 optimized]
 locales    - GNU C Library: National Language (locale) data [support]
 nscd       - GNU C Library: Name Service Cache Daemon
Closes: 10689 17528 19168 20988 21272 23547 24414 24652 25773 26226 27227 29675 30427 31465 31502 33197 34442 35089 35123 35624 35644 36139 36498 37296 37409 37681 38028 39077 39080 39562 39578 39582 39585 39693 39705 40053 40184 41455 41800 41917 41947 41952 42088 42135 42512 42912 42944 46173 48476 52420 52914 53748 57101 57729 58713 59429 59622 60743 61154 64074 64878 65634 66138 66757 70012 70658 74164 74945 75473 75865 77170 78495 78881 78937 79221 79224
Changes: 
 glibc (2.2-6) unstable; urgency=low
 .
   * Added m68k lchown fixes, plus removed conflict for libstdc++2.10-dev
     on m68k. Bug/patch provided by Michael Fedrowitz
     <michael.fedrowitz@informatik.uni-ulm.de>, closes: #78937
   * libc-opt: added memprof to the death list of packages that don't work
     with our optimized libraries, closes: #79224
   * Added Provides: glibc2.2 to libc6/libc6.1/libc0.2 so I can make
     locales dep on it, closes: #78495
   * CVS sync as of 2000-12-15
   * Fixed previously: closes: #75865, #77170, #75473
   * Added a "." counter while checking services for install, closes: #78881
   * %hhn works as expected in i386 in this version of glibc, closes: #79221
   * Looks like this is resolved, closes: #59429
   * The libc info page says not to use fgets on streams that may have NULL
     char's, which sockets might, closes: #57729
   * This is probably fixed, if not reopen it please, closes: #24414
   * Well this bug report has no report in the BTS, I am going to assume
     from the age and type of the title, that it is fixed, closes: #21272
   * Old ld.so issue, most likely resolved in hamm, closes: #46173
   * This bug is a simple programming mistake. For one the child never
     fills the buffer in certain cases, so it's contents are never flushed.
     If the program called fflush after every output, then it works fine,
     closes: #26226
   * The new upgrade code in libc postint should resolve this, closes: #64074
   * This is a compilation error. libc.so.6 does not contain fxstat
     (libc-nonshared.a does), so if you don't link properly (like with
     gcc), you will miss some symbols, closes: #36139
   * Similar to the above, also resolved, closes: #30427
   * Old ld.so bug, fixed, closes: #70658
   * Current localedef doesn't seem to segv on improper input, closes: #65634, #64878
   * YAOLDSOB (Yet Another LDSO Bug), closes: #42944
   * Lack of useful info in the BTS ("I suspect glibc" doesn't cut it),
     closes: #36498
   * Someone needs to read release notes, closes: #41455
   * Uh, tzconfig works. Tzselect is not for changing timezones, but for
     querying what the available ones are. From tzselect(1):
 .
       Note  that tzselect will not actually change the timezone
       for you. Use the tzconfig(8) utility to achieve this.
 .
     So you see, this is how it's meant to be, closes: #37409
   * Fixed in glibc 2.2, closes: #42512
   * a) all init scripts need to support restart
     b) postinst uses stop/start now anyway
     c) postinst fails much better now when things go wrong
 .
     closes: #52914
   * getaddrinfo does DNS lookups regardless because of the nature of the
     function. Also it handles ipv4/ipv6 better now, closes: #60743
   * I don't see why libc6 needs to create /etc/rcS.d/ when dpkg does it so
     closes: #66138
   * strstr seems pretty fast now, closes: #10689
   * Latest emacs/libc6 is working fine, closes: #48476
   * YAOLDSOB, closes: #42135
   * libstdc++-v3/glibc2.2 compiles fine together, closes: #66757
   * strerror() with maxerror+1 works as expected now, closes: #40184
   * No other info, and no similar reports. Assuming user error, closes: #31465
   * Old ssh-nonfree getting a sigsegv is not a bug in libc6, but sshd,
     closes: #41800
   * Restarting woffle already, closes: #74164
   * I believe this was due to some old nss1 issues, which are now resolved
     during upgrades, closes: #35089
   * This is something libc6 itself cannot fix. Either way, rsh/rlogin is
     broken by nature, closes: #19168
   * Well, I can't retroactively go back to hamm and add a stub for
     setresuid(), closes: #29675
   * Fixed upstream a long time ago, closes: #39693
   * From unix/getlogin.c:
 .
     /* Get name of tty connected to fd 0.  Return NULL if not a tty or
        if fd 0 isn't open.  Note that a lot of documentation says that
        getlogin() is based on the controlling terminal---what they
        really mean is "the terminal connected to standard input".  The
        getlogin() implementation of DEC Unix, SunOS, Solaris, HP-UX all
        return NULL if fd 0 has been closed, so this is the compatible
        thing to do.  Note that ttyname(open("/dev/tty")) on those
        systems returns /dev/tty, so that is not a possible solution for
        getlogin().  */
 .
     So basically, closes: #17528
   * Current nis/nss-compat code looks like it handles this right,
     closes: #33197
   * libc6 cannot compensate for broken coding, closes: #42912
   * nprocs is fixed in 2.2, closes: #57101
   * libdb.so.2 does have shlibs now, closes: #39578
   * getcwd now returns NULL in the case shown in this bug report, so there
     is no suprise if the program checks the return correctly, closes:
     #27227
   * Adduser now restarts nscd as needed, closes: #37296
   * getaddrinfo fixes for ipv4/ipv6 fixes this, closes: #58713
   * Programs using libc5/libc6 at the same time via dynamically loading
     libc5 apps from a libc6 apps) simply does not work, closes: #42088
   * getaddrinfo fix, closes: #70012
   * libc-64 was never meant to work right, closes: #53748
   * libNoVersion.so.1 is gone, closes: #37681
   * libc/postinst is file-rc friendly now, closes: #40053
   * libdb2 is no longer a reference for libdb stuff, closes: #61154
   * ld.so/ldconfig now have man pages, closes: #41917
   * Bah, libtricks is old and gone, closes: #39080
   * /var/state/glibc is gone, closes: #39562, #39705
   * glibc no longer includes db/db2, so look for docs in those seperate
     packages, closes: #23547
   * scsi/scsi.h is there, closes: #31502
   * linux/joystick.h is there, closes: #38028
   * db.h is no longer in libc6-dev, closes: #39077, #74945
   * nprocs works on sparc now, closes: #52420
   * ldd now supports libc5 better, closes: #35644
   * Unreproducable, closes: #39582, #25773, #35624, #35123
   * /var/lib/misc/Makefile does not refer to /var/db, closes: #41947
   * llseek is obsolete, use lseek64 now, closes: #20988
   * Actually this looks like an error in the program, closes: #41952
   * Hmm, I would guess that libc6/libc5.4.38 is correct, and libc5.4.17 is
     wrong, close: #21839
   * Fixed in the Before Time, during the Great Long-Long Ago,
     closes: #39585, #34442, #59622, #24652
   * That's all for now...
Files: 
 d3f54e6f043aa7553347577e3309c740 1069 libs required glibc_2.2-6.dsc
 3d6939d2bb7f0a89f02a1e24753e538d 556928 libs required glibc_2.2-6.diff.gz
 e140e92c90f0098b0addb515062068e9 3401834 base required libc6_2.2-6_sparc.deb
 900ce8aeeec887856055b43bce16f5e5 2330376 devel standard libc6-dev_2.2-6_sparc.deb
 300208e4b121c50d5c81d1fc9474a543 971026 devel extra libc6-prof_2.2-6_sparc.deb
 285945a50567f8d255cb2af743b83694 2824524 devel extra libc6-dbg_2.2-6_sparc.deb
 fdec002e9f2388322f68042ceaeb3a4b 850026 devel extra libc6-pic_2.2-6_sparc.deb
 c1951c98aec054b4c386a44b1d903b3a 902314 libs extra libc6-v9_2.2-6_sparc.deb
 746b27236f339608ae15cd316a3fa40b 40946 admin optional nscd_2.2-6_sparc.deb
 b75f644d33a1e4da03762ec621a7ff0c 576598 admin standard locales_2.2-6_all.deb
 b2b2914a04b057d293d1c0f281cc7d1f 2403278 admin extra i18ndata_2.2-6_all.deb
 e0a827139c11f580bf8d2e86d14fc9d4 2500616 doc optional glibc-doc_2.2-6_all.deb
 2d6871f7f7ba478d7bc840abccfe51d7 3055550 base required libc6_2.2-6_i386.deb
 d4f7686f9c53d9eeada0fc0222b685a5 2174674 devel standard libc6-dev_2.2-6_i386.deb
 e23322ffa892918c5400123b3096d7ef 882864 devel extra libc6-prof_2.2-6_i386.deb
 ae37b4c99b6589b8e1531712ab5a40e0 2574304 devel extra libc6-dbg_2.2-6_i386.deb
 c01aa3292df57d381a609ade98b63bda 780074 devel extra libc6-pic_2.2-6_i386.deb
 d012076eac70e9422bd20aad2e1237a8 917116 libs extra libc6-i586_2.2-6_i386.deb
 965a609bac8e3bacf0785e67b474a4f7 916004 libs extra libc6-i686_2.2-6_i386.deb
 4f28bf9425bfb1f020c1193c0c28ba5b 40802 admin optional nscd_2.2-6_i386.deb
 4786d4647af7cdcc6c73eef721f72a2b 3535288 base required libc6_2.2-6_powerpc.deb
 cd97a92d129322beb45bb808ac45b262 2162178 devel standard libc6-dev_2.2-6_powerpc.deb
 318311d43eb65e8b4b0c8926c63b3af9 1052058 devel extra libc6-prof_2.2-6_powerpc.deb
 9ca47cdca8776c6a0f3955f6069e6cfa 2865738 devel extra libc6-dbg_2.2-6_powerpc.deb
 8c258a50112dbd55ce472a9e4d150b0a 866318 devel extra libc6-pic_2.2-6_powerpc.deb
 750e6d7254851571b076285eeaaa0e19 41634 admin optional nscd_2.2-6_powerpc.deb

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